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  <url>
       <loc>https://www.trainthing.com/</loc>
       <lastmod>2025-12-01T00:57:24+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>1.0000</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/images/TrainThing.gif</image:loc>
         <image:caption>Stylized Train Thing</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/Introduction.html</loc>
       <lastmod>2025-12-01T00:54:26+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.8000</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/_logo.jpg</image:loc>
         <image:caption>Stylized Inglenook</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/basic_puzzle.gif</image:loc>
         <image:caption>Basic puzzle graphic</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Setup.gif</image:loc>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/EnterMove1a.png</image:loc>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/simulator/index.html</loc>
       <lastmod>2025-11-24T02:08:50+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.8000</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/simulator/images/Inglenook_B.png</image:loc>
         <image:caption>Stylized Inglenook</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/simulator/images/exit.png</image:loc>
         <image:caption>exit button</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/simulator/images/basic_W.png</image:loc>
         <image:caption>basic simulator screen</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/simulator/images/setup_W.png</image:loc>
         <image:caption>Setup Screen</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/simulator/images/move_1_W.png</image:loc>
         <image:caption>Enter a move</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/simulator/OnePage/Simulator.html</loc>
       <lastmod>2022-07-04T00:14:03+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.8000</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/OnePage/lib/question.gif</image:loc>
         <image:caption>Question icon - link to contextual help</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/OnePage/lib/init_screen.png</image:loc>
         <image:caption>Semulator controls screen shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/OnePage/lib/newWin.png</image:loc>
         <image:caption>Open second window. Screen Shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/OnePage/lib/TwoScreens2.png</image:loc>
         <image:caption>Two windows open. Screen Shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/OnePage/lib/Sim_labels.png</image:loc>
         <image:caption>Label display control screen shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/OnePage/lib/Sim_trains.png</image:loc>
         <image:caption>Assign train to path detail screen shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/OnePage/lib/sim_error11.png</image:loc>
         <image:caption>Cause of error screen shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/OnePage/lib/sim_error13.png</image:loc>
         <image:caption>Reminder of error screen shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/OnePage/lib/sim_error21.png</image:loc>
         <image:caption>Example of error screen shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/OnePage/lib/sim_error23.png</image:loc>
         <image:caption>Reminder of error screen shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/OnePage/lib/CW.png</image:loc>
         <image:caption>Clockwise figure eight defined.</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Introduction.html</loc>
       <lastmod>2025-12-01T00:47:51+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.8000</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/_logo.png</image:loc>
         <image:caption>Stylized TrainThing</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/small_track3.png</image:loc>
         <image:caption>Original simple problem&amp;nbsp; layout</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/big_track3.png</image:loc>
         <image:caption>Embellished project track layout</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/TopLevelDesign.html</loc>
       <lastmod>2025-12-01T00:54:27+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.6400</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/IN_design.jpg</image:loc>
         <image:caption>Graphic of top-level design</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/simulator/simulator/</loc>
       <lastmod>2025-12-01T00:57:24+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.6400</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/simulator/icon/big_question.gif</image:loc>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/simulator/icon/question.gif</image:loc>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/DocumentationRoadmap.html</loc>
       <lastmod>2025-12-01T00:47:46+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.6400</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/science.jpg</image:loc>
         <image:caption>Science vs. screwing around</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/RollingStock.html</loc>
       <lastmod>2025-12-01T00:48:05+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.6400</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/T2.jpg</image:loc>
         <image:caption>Four colored trains/locos</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/CamCar.jpg</image:loc>
         <image:caption>Loging Caboose will be used to hide eye level camra</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/CamCar2.jpg</image:loc>
         <image:caption>Camera on a truck. Wont fit in caboose</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/TrainCamB-1.jpg</image:loc>
         <image:caption>Camera with bracket</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/TrainCamB-2.jpg</image:loc>
         <image:caption>Camera on engine</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/OreCarLabels.html</loc>
       <lastmod>2025-12-01T00:54:27+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Block1.jpg</image:loc>
         <image:caption>Gondola with chil&amp;apos;s numbered block at an angle</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/block5-1.jpg</image:loc>
         <image:caption>Gondola with child&amp;apos;s block inside bed</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/block5-2.jpg</image:loc>
         <image:caption>Gondola with different child&amp;apos;s block at an angle.</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/domino2.jpg</image:loc>
         <image:caption>Gondola with a domino as number label</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/post_it_3.jpg</image:loc>
         <image:caption>Gondola with Post-it note for a label</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Boxcar_blank1.jpg</image:loc>
         <image:caption>Ore Car with a blank label</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/Graphics.html</loc>
       <lastmod>2025-12-01T00:54:25+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Move1a.png</image:loc>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/setup-whelp.png</image:loc>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/IRSensors.html</loc>
       <lastmod>2025-12-01T00:54:26+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/IR_top.jpg</image:loc>
         <image:caption>IR Sensor, Top</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/IR_back.jpg</image:loc>
         <image:caption>IR Sensor, bottom</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/DSC00316.jpg</image:loc>
         <image:caption>IR Sensor, original and Modified</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/IR_Layout.png</image:loc>
         <image:caption>Diagram showing location of IR sensor in relationship to train cars</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/IR_design.png</image:loc>
         <image:caption>Basic design of remote LED mounts for IR sensors.</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/RollingStock.html</loc>
       <lastmod>2025-12-01T00:54:27+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Switcher.jpg</image:loc>
         <image:caption>0-4-0 Switcher / Locomotive</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Boxcar_load.jpg</image:loc>
         <image:caption>Gondola, Ore Car w/ Load</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Boxcar_23.jpg</image:loc>
         <image:caption>Gondola #71323</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Boxcar_10.jpg</image:loc>
         <image:caption>Gondola #14510</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Boxcar_73.jpg</image:loc>
         <image:caption>Gondola #501273</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Boxcar_27.jpg</image:loc>
         <image:caption>Gondola 500627</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Boxcar_blank.jpg</image:loc>
         <image:caption>Ore Car w/ Label Blank</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/Alphanumeric.html</loc>
       <lastmod>2025-12-01T00:54:24+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Alphanumeric_cb.jpg</image:loc>
         <image:caption>Schematic of board wiring for quad alphanumeric displays</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/alphanumeric_mounted.jpg</image:loc>
         <image:caption>Custom boards with quad-displays showing &amp;apos;Puzzle Inglenook&amp;apos;</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/AN_hidden_wire.jpg</image:loc>
         <image:caption>Custom board showing wiring under quad-display</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/AN_plugs.jpg</image:loc>
         <image:caption>Custom board showing plugs on the back</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/alphanumeric_not.jpg</image:loc>
         <image:caption>3 gondolas with labels showing that the quad-displays are too close togeather.</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/334862.jpg</image:loc>
         <image:caption>Signle 7-segment with decimal point LED</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/3088-02.jpg</image:loc>
         <image:caption>Top of 7-segment LED featherwing shown with a quarter&amp;nbsp; for size</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/3088-03.jpg</image:loc>
         <image:caption>Bottom of 7-segment LED featherWing board</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Numeric_cbs.jpg</image:loc>
         <image:caption>Custom board for 7-segment LED FeatherWing</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/7-segments.gif</image:loc>
         <image:caption>Map showing the label of the 7 number segments.</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Numeric_cbBottom.jpg</image:loc>
         <image:caption>Custom board, Bottom</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Numeric_cbTop.jpg</image:loc>
         <image:caption>Custom board, Top</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/quad_numeric.jpg</image:loc>
         <image:caption>quad 7-segment LED FeatherWing with plugs inplace of the LED</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Numeric_MotherBoad.jpg</image:loc>
         <image:caption>Schematic &amp;amp; layout for the Numeric mother board</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Numeric_Feathers.jpg</image:loc>
         <image:caption>Mother board and featherWings</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Numeric_boardStack.jpg</image:loc>
         <image:caption>Full stack with custom FetherWing on top</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/LightedBumper.html</loc>
       <lastmod>2025-12-01T00:54:26+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Lighted_bumper_5mm.jpg</image:loc>
         <image:caption>Square bumper with 5mm LEDs checking size</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Lighted_bumper_3mm.jpg</image:loc>
         <image:caption>Square bumper with 3mm LEDs better size</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/555-bi_polar.png</image:loc>
         <image:caption>555-timer astable multivibrator</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Vcc.jpg</image:loc>
         <image:caption>Schematic for power control.</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/blinkie.jpg</image:loc>
         <image:caption>Schematic of curcite to blink LEDs on bumper</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/blinkie_breadboard.jpg</image:loc>
         <image:caption>Breadboard of the Blinkie circuit</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/blinkie_layout.jpg</image:loc>
         <image:caption>Circuit board layout for the blinkie circuit</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/blinkie_LED.jpg</image:loc>
         <image:caption>Circuit for the 2 LEDs with cable.</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/ListofMoves.html</loc>
       <lastmod>2025-12-01T00:54:26+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/List_of_Moves.gif</image:loc>
         <image:caption>list car location after each move</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/simulator/doc/Introduction.html</loc>
       <lastmod>2022-07-04T00:15:32+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/doc/lib/question.gif</image:loc>
         <image:caption>Question icon - link to contextual help</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/doc/lib/init_screen.png</image:loc>
         <image:caption>Semulator controls screen shot</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/simulator/doc/CreateNewWindow.html</loc>
       <lastmod>2022-07-04T00:15:30+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/doc/lib/newWin.png</image:loc>
         <image:caption>Open second window. Screen Shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/doc/lib/TwoScreens2.png</image:loc>
         <image:caption>Two windows open. Screen Shot</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/simulator/doc/DisplayLabels.html</loc>
       <lastmod>2022-07-04T00:15:30+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/doc/lib/Sim_labels.png</image:loc>
         <image:caption>Label display control screen shot</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/simulator/doc/ConfigureTrains.html</loc>
       <lastmod>2022-07-04T00:15:29+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/doc/lib/Sim_trains.png</image:loc>
         <image:caption>Assign train to path detail screen shot</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/simulator/doc/DirectionofPath.html</loc>
       <lastmod>2022-07-04T00:15:30+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/doc/lib/CW.png</image:loc>
         <image:caption>Clockwise figure eight defined.</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Design.html</loc>
       <lastmod>2025-12-01T00:47:45+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Design_B.png</image:loc>
         <image:caption>Diagram of control and status flow</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Pictures.html</loc>
       <lastmod>2025-12-01T00:48:02+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/big_track5.png</image:loc>
         <image:caption>Project track layout with signal locations</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Table-Up.jpg</image:loc>
         <image:caption>Project layout base in the up position</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Table-Down.jpg</image:loc>
         <image:caption>Bare Project base in the down (normal) position</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Cork-roadbed.jpg</image:loc>
         <image:caption>Proect base with cork roadbead and backdrop</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Track_Inplace.jpg</image:loc>
         <image:caption>Proect base with railroad track in place</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DCC_Wiring.jpg</image:loc>
         <image:caption>Project base with DCC and IR sensor wiring</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Power.jpg</image:loc>
         <image:caption>Project 15vdc, 5vdc and 1v5dc power sources</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/ParkingLot-Signals.jpg</image:loc>
         <image:caption>Track &amp;apos;parking lot&amp;apos; detail with locos and tri-color signals</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RatsNest.jpg</image:loc>
         <image:caption>Ugly wiring around Arduino</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/crowding.png</image:loc>
         <image:caption>Crowding under the track</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RPi-1.jpg</image:loc>
         <image:caption>Raspberry Pi wired up temporarily.</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RPi-2.jpg</image:loc>
         <image:caption>Raspberry Pi stack connected to the TrainThing</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/install_phase-1.jpg</image:loc>
         <image:caption>Cluster of three semaphore towers mounted on track</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/install_phase-2D.jpg</image:loc>
         <image:caption>Bracket for the three semaphores crowded</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/forest-1.jpg</image:loc>
         <image:caption>Layout with semaphore signals</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/bottom-2.jpg</image:loc>
         <image:caption>Wiring under the TrainThing layout</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RPi_servos.jpg</image:loc>
         <image:caption>Raspberry Pi all wired up</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/New_TT_graphic.png</image:loc>
         <image:caption>Laptop graphic of TrainThing layout with signals</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Simulator.html</loc>
       <lastmod>2025-12-01T00:48:09+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/TwoScreens23.png</image:loc>
         <image:caption>Simulator with two windows open - screen shot</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/TrainTrack1.html</loc>
       <lastmod>2025-12-01T00:48:13+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/PiGuard.jpg</image:loc>
         <image:caption>Pi Guard, a Table top extention to protect the Pi</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/PiGoesHere.jpg</image:loc>
         <image:caption>The Pi will be mounted under the top</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi_behindGuard.jpg</image:loc>
         <image:caption>RPi Mounted under layout</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/InstallingSignals.html</loc>
       <lastmod>2025-12-01T00:47:50+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Signal_pole.jpg</image:loc>
         <image:caption>semaphore tower showing part that fits through base</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/drill_dowel.jpg</image:loc>
         <image:caption>Jig used to drill dowels to mount semaphores</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Location_prep.jpg</image:loc>
         <image:caption>Preperation hole in cork made with Fotstner bit</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/WatchingGlueDry.jpg</image:loc>
         <image:caption>drilled dowel glue inplace</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/install_phase-2A.jpg</image:loc>
         <image:caption>USB camara and light used to install semaphores</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/install_phase-2C.jpg</image:loc>
         <image:caption>Laptop screen showing semaphores&amp;nbsp; seen by USB caramra</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/install_phase-2B.jpg</image:loc>
         <image:caption>close up of one semaphore bracket in place</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/install_phase-2E.jpg</image:loc>
         <image:caption>end of cables connected to the Raspberry Pi from the signal servos</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/DCPower.html</loc>
       <lastmod>2025-12-01T00:47:44+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.5120</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Power_SW.jpg</image:loc>
         <image:caption>TrainThing Main Power Switch</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/OreCarLabelJig.html</loc>
       <lastmod>2025-12-01T00:54:27+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/LabelJig_raw.jpg</image:loc>
         <image:caption>Raw block of metel for jig</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/LabelJig_squared.jpg</image:loc>
         <image:caption>Jig material squared</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/LabelJig_slots.jpg</image:loc>
         <image:caption>Jig mounting slots cut.</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/LabelJig_wBlank.jpg</image:loc>
         <image:caption>Jig with blank label</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/LabelJig_mountedStep2A.jpg</image:loc>
         <image:caption>Jig mounted for milling</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/SideClamp_inplace.jpg</image:loc>
         <image:caption>jig with side-clamps in place</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/jig_first_line.jpg</image:loc>
         <image:caption>Starting to mill the jig.</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/TortoiseWabbitTurnoutWiring.html</loc>
       <lastmod>2025-12-01T00:54:28+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Turnout_wiring.jpg</image:loc>
         <image:caption>Diagram showing connections betweem elements controlling the turnouts</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/T-W_Board.png</image:loc>
         <image:caption>Wiring diagram for the custom I/O board</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Tortoise_IOBoard.jpg</image:loc>
         <image:caption>Custom I/O board showing plugs</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Tortoise_cabels.png</image:loc>
         <image:caption>Turnout cable wiring.</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/Bumpers.html</loc>
       <lastmod>2025-12-01T00:54:25+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Bumper.jpg</image:loc>
         <image:caption>Side view of bumper with car coupler for reference</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/Bumper1.jpg</image:loc>
         <image:caption>Different view of bumper with train coupler for reference</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/inglenook/documentation/SideClampstomakejig.html</loc>
       <lastmod>2025-12-01T00:54:27+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/SideClamp_raw.jpg</image:loc>
         <image:caption>Side-clamps raw material</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/SideClamp_dirty.jpg</image:loc>
         <image:caption>Side-clamps with holes drilled</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/sideClamp_blued.jpg</image:loc>
         <image:caption>Side-clamps cleaned and blued.</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/inglenook/documentation/lib/SideClamp_it%20takes2.jpg</image:loc>
         <image:caption>Front view of jig being held by side clamps</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/3RaspberryPi4.html</loc>
       <lastmod>2025-12-01T00:47:22+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Softwar-3.png</image:loc>
         <image:caption>RPi Software structure</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/ArduinoMega.html</loc>
       <lastmod>2025-12-01T00:47:30+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arduino_Stacked2.jpg</image:loc>
         <image:caption>Assembled Arduino/Motor Shield &amp;amp; custom boards</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arduino_Stacked.jpg</image:loc>
         <image:caption>Assembled Arduino/Motor Shield &amp;amp; custom boards</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arduino-IR-sensors.jpg</image:loc>
         <image:caption>Arduino Base Station connected to 36 IR sensors</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/FanHardware.html</loc>
       <lastmod>2025-12-01T00:47:48+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Fan_top.jpg</image:loc>
         <image:caption>Top fan board version 1</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Fan_bottom.jpg</image:loc>
         <image:caption>Bottom of Fan board, version 1</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Fan_top2.jpg</image:loc>
         <image:caption>Top Fan Board version #2</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Fan_bottom2.jpg</image:loc>
         <image:caption>Bottom fan board version #2</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Fan_Mounted.jpg</image:loc>
         <image:caption>Fan board mounded on Raspberry Pi</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Fan_PluggedIn.jpg</image:loc>
         <image:caption>Fan board pluged into&amp;nbsp; PWM HAT</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Fan_mounted2.jpg</image:loc>
         <image:caption>Fan version 2 mounted on Raspberry Pi</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Fan_PluggedIn2.jpg</image:loc>
         <image:caption>Fan plugged into PWM/Servo HAT</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Fan_Button.jpg</image:loc>
         <image:caption>Fan control push button</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/WabbitFeedbackWiring.html</loc>
       <lastmod>2025-12-01T00:48:16+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Wabbit-FB12.png</image:loc>
         <image:caption>Wabbit Feedback board - 1</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Wabbit-FB22.png</image:loc>
         <image:caption>Wabbit Feedback board - 2</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Wabbit-FB_Ckt2.png</image:loc>
         <image:caption>Wabbit Feedback wiring</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/UnicornHDHAT.html</loc>
       <lastmod>2025-12-01T00:48:15+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Unicorn_HAT.jpg</image:loc>
         <image:caption>Unicorn 16x16 LED display HAT</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Unicorn_heart.jpg</image:loc>
         <image:caption>Raspberry Pi, Unicorn HAT HD</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi-With-HATs.jpg</image:loc>
         <image:caption>Raspberry Pi, Unicorn HAT HD with extension</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Unicorn_cable1.png</image:loc>
         <image:caption>Raspberry Pi, Unicorn HAT HD extension schematic</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi_pinout.png</image:loc>
         <image:caption>Raspberry Pi / Unicorn HAT HD pinout</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Unicorn_2_Pi.jpg</image:loc>
         <image:caption>Raspberry Pi with 2 Unicorn HATs</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Unicorn_cable_2.png</image:loc>
         <image:caption>Doule&amp;nbsp; Unicorn HAT HD extension schematic</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Unicorn_Header2.jpg</image:loc>
         <image:caption>Unicor &amp;amp; interrupt interface board top</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Unicorn_Header2A.jpg</image:loc>
         <image:caption>Custom board to connect Unicorns to Raspberry Pi header - bottom</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/UntcornHeader2.png</image:loc>
         <image:caption>Schmatic of Unicorn header board</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Unicorn_cable-v2.png</image:loc>
         <image:caption>Unicorn mounting cabling version 2</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/TwoUnicorn_DisplayV2.jpg</image:loc>
         <image:caption>Two unicorn display version 2</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/TrafficMonitor.html</loc>
       <lastmod>2025-12-01T00:48:13+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/MonitorBrackit.png</image:loc>
         <image:caption>Drawing for Traffic Monitor Bracket</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Monitor_IO_1.png</image:loc>
         <image:caption>Monitor IO Circuit</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Monitor_IO1.jpg</image:loc>
         <image:caption>Picture of Monitor IO Board</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Monitor.jpg</image:loc>
         <image:caption>Traffic Monitor/Switch Bracket</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Signals2.html</loc>
       <lastmod>2025-12-01T00:48:08+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/signals_1.png</image:loc>
         <image:caption>Track layout with mainline Signals</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/signals_2.png</image:loc>
         <image:caption>Track layout with divergent Signals</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/signals_3.png</image:loc>
         <image:caption>Track layout with problem Signals</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/signals_4.png</image:loc>
         <image:caption>Track layout with dwarf Signals</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/RaspberryPi4Heat.html</loc>
       <lastmod>2025-12-01T00:48:04+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/temp_S.jpg</image:loc>
         <image:caption>Raspberry Pi 4 no fan, 5-minute time/temperature graph</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Temp_SF.jpg</image:loc>
         <image:caption>Raspberry Pi 4 w/ fan, 5-minute time/temperature graph</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Temp_LF_ST.jpg</image:loc>
         <image:caption>Raspberry Pi time/temperature graph detail with freq drop</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Temp_L.jpg</image:loc>
         <image:caption>Raspberry Pi 4 no fan, 20-minute time/temperature graph</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Temp_LF.jpg</image:loc>
         <image:caption>Raspberry Pi 4 w/ fan, 20-minute time/temperature graph</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/VacuumHoseCoupling.html</loc>
       <lastmod>2025-12-01T00:48:15+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/cupling.png</image:loc>
         <image:caption>machanical drawing of shop-vac coupling</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/boring_coupling2.jpg</image:loc>
         <image:caption>Acetal stock mounted on leathe for boring</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/vac_coupling.jpg</image:loc>
         <image:caption>Vac coupling with hoses connected</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/vac_coupling2.jpg</image:loc>
         <image:caption>Vac coupling showing one end</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Initialize.html</loc>
       <lastmod>2025-12-01T00:47:50+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/init_screen.png</image:loc>
         <image:caption>Simulator setup window - screen shot</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/MainLoop.html</loc>
       <lastmod>2025-12-01T00:47:56+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Update_loop.png</image:loc>
         <image:caption>Main loop status window - screen shot</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Signals.html</loc>
       <lastmod>2025-12-01T00:48:08+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/tmr842.jpg</image:loc>
         <image:caption>Tomar Industries doule head 3-aspect semaphore #842</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/tmr854.jpg</image:loc>
         <image:caption>Tomar Industries Single head 3-aspect semaphore&amp;nbsp; #854</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/tmr853.jpg</image:loc>
         <image:caption>Tomar Industries Single head 3-aspect semaphore #853</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/tmr850.jpg</image:loc>
         <image:caption>Tomar Industries Dwarf 3-LED signal</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/SemaphoreTestFixture.html</loc>
       <lastmod>2025-12-01T00:48:06+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/teststand.jpg</image:loc>
         <image:caption>Test Fixture to develop semaphore control</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/teststand2.jpg</image:loc>
         <image:caption>Test fixture with semaphore and control bracket installed</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/ElementsofStack.html</loc>
       <lastmod>2025-12-01T00:47:47+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.4096</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi4_Stack-1.jpg</image:loc>
         <image:caption>Raspberry Pi 4 and case</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Fan_mounted23.jpg</image:loc>
         <image:caption>Raspberry Pi 4 with fan added</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi4_Stack-3A.jpg</image:loc>
         <image:caption>Raspberry Pi 4 with Servo/PWM HAT on top</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi4_Stack-31.jpg</image:loc>
         <image:caption>IO Pi Plus adds 32 IO pins to the Pi</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi4_Stack-4A.jpg</image:loc>
         <image:caption>Raspberry Pi 4 stack with first Servo Bonnet added</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi4_Stack-5A.jpg</image:loc>
         <image:caption>Raspberry Pi 4 stack with second Servo Bonnet added</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi4_Stack-6A.jpg</image:loc>
         <image:caption>Raspberry Pi 4 stack with third Servo Bonnet added</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi4_Stack-7A2.jpg</image:loc>
         <image:caption>Boaed to connect Unicorns and IO Pi interrups</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/simulator/doc/SelectColorOnce.html</loc>
       <lastmod>2022-07-04T00:15:34+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/doc/lib/sim_error21.png</image:loc>
         <image:caption>Example of error screen shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/doc/lib/sim_error23.png</image:loc>
         <image:caption>Reminder of error screen shot</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/22-31Jul.html</loc>
       <lastmod>2025-12-01T00:47:13+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/IR-Sensor-mod.jpg</image:loc>
         <image:caption>IR Sensor unmodified (left) &amp;amp; modified</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/ServoHAT.png</image:loc>
         <image:caption>Raspberry Pi PWM HAT expantion area</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/IRSensorHeader.html</loc>
       <lastmod>2025-12-01T00:47:51+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/MAGA_IO_Header.png</image:loc>
         <image:caption>Arduino Maga IO Header pinout</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/IR_header1.png</image:loc>
         <image:caption>Arduino IR sensor custom board schematic</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/IR_Header32.jpg</image:loc>
         <image:caption>Arduino IR sensor custom board photo</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/IRRelayHeater.html</loc>
       <lastmod>2025-12-01T00:47:51+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Relay_header.png</image:loc>
         <image:caption>Relay control board schematic</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Relay_ckt.png</image:loc>
         <image:caption>Relay board schamitic</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/IR_Relay_Header.jpg</image:loc>
         <image:caption>Photo of Arduino/Motor Shield custom board</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Relay_Board.jpg</image:loc>
         <image:caption>Photo of track reversing relay board</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Adafruit16-ChannelPWM.html</loc>
       <lastmod>2025-12-01T00:47:29+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/ServoHat_Pins.jpg</image:loc>
         <image:caption>Raspberry Pi PWM HAT with modification (1)</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/ServoHAT_Bottom.jpg</image:loc>
         <image:caption>Raspberry Pi PWM HAT with modification (2)</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi3_servo_header-1.png</image:loc>
         <image:caption>Wiring for PWM Pi HAT GPIO pins</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Track.html</loc>
       <lastmod>2025-12-01T00:48:12+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/big_track3A.png</image:loc>
         <image:caption>Basic Track Layout with blocks labeled.</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/TrackSwitch.jpg</image:loc>
         <image:caption>Switch, under layout, to control signal to track block 14</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/TrackSwLabels.jpg</image:loc>
         <image:caption>Switch labels of layout fascia</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/TestTrack.jpg</image:loc>
         <image:caption>Test track with connector block and switches</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/TestTrackSw.jpg</image:loc>
         <image:caption>Test track switch labels</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/TwoIsolatedTrackBlocks.html</loc>
       <lastmod>2025-12-01T00:48:14+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/reverseLoop.png</image:loc>
         <image:caption>Track layout with a &amp;quot;revversing loop&amp;quot; highlighted as part of figure-8</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/reverse2.png</image:loc>
         <image:caption>Track layout with another way to identify polarity problems</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Powerdistribution.html</loc>
       <lastmod>2025-12-01T00:48:03+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/PowerBuss.png</image:loc>
         <image:caption>Track layout with scamatic of power distribution</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/TrafficManagement.html</loc>
       <lastmod>2025-12-01T00:48:13+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/traffic.png</image:loc>
         <image:caption>Raspberry Pi Traffic class software flow chart</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/TrafficMonitorLEDs.html</loc>
       <lastmod>2025-12-01T00:48:13+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/monitor1.png</image:loc>
         <image:caption>Traffic Monitor Software block diagram</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/AddUnicornHDHATs.html</loc>
       <lastmod>2025-12-01T00:47:29+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Signal_layout.png</image:loc>
         <image:caption>Diagram of unicorn pixels used</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/List.html</loc>
       <lastmod>2025-12-01T00:47:55+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/NewItem.jpg</image:loc>
         <image:caption>Diagram??JMRI Decoder Pro Logo</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Roster.html</loc>
       <lastmod>2025-12-01T00:48:05+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/NewItem%201.jpg</image:loc>
         <image:caption>Diagram??JMRI Decoder Pro Logo</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/MiniVerticalMill.html</loc>
       <lastmod>2025-12-01T00:47:59+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/mill-on-porch.jpg</image:loc>
         <image:caption>Vertical Mill on the porch in crates</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Mill_Uncrate.jpg</image:loc>
         <image:caption>Mill ready for cleaning</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Mill_Stand.jpg</image:loc>
         <image:caption>Stand for mill</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Mill_inplace.jpg</image:loc>
         <image:caption>Vertical Mill in place ready for use</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/New_Home.jpg</image:loc>
         <image:caption>Mill in new location making room for lathe</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/pentagonal.jpg</image:loc>
         <image:caption>pentagonal holes. Bad mill bearing??</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/ServoArmJigB.html</loc>
       <lastmod>2025-12-01T00:48:08+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/A_jig_B.jpg</image:loc>
         <image:caption>Jig for vertical mill to make Servo arms</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/RotaryTableL-Clamp.html</loc>
       <lastmod>2025-12-01T00:48:05+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/L-Clamp.jpg</image:loc>
         <image:caption>L-Clamp used to hold the rotary table in the vertical position</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/MillXDRO.html</loc>
       <lastmod>2025-12-01T00:47:58+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DRO_1.jpg</image:loc>
         <image:caption>Parts layed out for X DRO</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DRO_front.jpg</image:loc>
         <image:caption>Front of mounting bracket</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DRO_back.jpg</image:loc>
         <image:caption>Back of mounting bracket</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DRO_2.jpg</image:loc>
         <image:caption>X-DRO installed on mill</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DRO_3B.jpg</image:loc>
         <image:caption>DRO display on headstock</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/MillY-axisDRO.html</loc>
       <lastmod>2025-12-01T00:47:58+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Loc_Y_DRO.jpg</image:loc>
         <image:caption>Wher the mill Y DRO will go</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Y_DRO.jpg</image:loc>
         <image:caption>Y DRO will need some fancy brackets</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/MiniLathe.html</loc>
       <lastmod>2025-12-01T00:47:58+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Lathe_OnPorch.jpg</image:loc>
         <image:caption>Mini lathe on porch, in crate</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Lathe_stand.jpg</image:loc>
         <image:caption>Stand for lathe in place and level</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Lathe_inPlace.jpg</image:loc>
         <image:caption>Lathe bolted&amp;nbsp; in place</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/HorizontalBandSaw.html</loc>
       <lastmod>2025-12-01T00:47:50+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/BandSaw.jpg</image:loc>
         <image:caption>Horizontal Band Saw assembled and on the poach</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/KnobsforMillXYlocks.html</loc>
       <lastmod>2025-12-01T00:47:55+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Handle_jam1.jpg</image:loc>
         <image:caption>Why the mill locking handles need to be replaced</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Handle_jam2.jpg</image:loc>
         <image:caption>handle hits the mill vice too.</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Handle_jam3.jpg</image:loc>
         <image:caption>Locking handle also hits the Y wheele</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Lock_knobs.png</image:loc>
         <image:caption>Drawing of locking knob</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/lock_knob1.jpg</image:loc>
         <image:caption>Picture of brass locking knob.</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/lock_knob2.jpg</image:loc>
         <image:caption>Locking knob with set screw</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/lock_knob3.jpg</image:loc>
         <image:caption>another view of the locking knob</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/lock_knob_error.jpg</image:loc>
         <image:caption>mill X limit stop hits knob. Try again</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Doweldrillingjig.html</loc>
       <lastmod>2025-12-01T00:47:47+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Dowel_jig.jpg</image:loc>
         <image:caption>Jig to center drill dowls</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/LatheDialDropIndicatorHolder.html</loc>
       <lastmod>2025-12-01T00:47:55+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Dial_indec.jpg</image:loc>
         <image:caption>Using a dial drop indicator</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Lathe_front_rail.jpg</image:loc>
         <image:caption>Rail where new bracket will go</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DialBack.jpg</image:loc>
         <image:caption>back of a drop dial indicator</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/First_dial.png</image:loc>
         <image:caption>Schamatic of bracket</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Dial_holder2a.png</image:loc>
         <image:caption>Drowing of bracket</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/AngleTable.html</loc>
       <lastmod>2025-12-01T00:47:29+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/angleTable.jpg</image:loc>
         <image:caption>Angle table for mill</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/MillTrammingTool.html</loc>
       <lastmod>2025-12-01T00:47:58+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/tram_1.jpg</image:loc>
         <image:caption>Drilling part of mill tramming tool</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/tram_2.jpg</image:loc>
         <image:caption>Trammng tool in use</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/RotaryTableAdapter.html</loc>
       <lastmod>2025-12-01T00:48:05+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RT_Bottom1.jpg</image:loc>
         <image:caption>Bolt that will not work</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RT_Bottom2.jpg</image:loc>
         <image:caption>Bolt that will not work - view 2</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RT_FlangeHead.jpg</image:loc>
         <image:caption>Bolt that will not work, close up</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RT_HexHead.jpg</image:loc>
         <image:caption>Different bolt that will not work</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RT_CapHead.jpg</image:loc>
         <image:caption>Cap bolt will do the job</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RT_why.jpg</image:loc>
         <image:caption>Collet that the blot holds tight</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RT_Adapter.png</image:loc>
         <image:caption>Diagram of need coller</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RT_Adapter_bottom.jpg</image:loc>
         <image:caption>Close-up collet holder</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/RT_Adapter_top.jpg</image:loc>
         <image:caption>Close up of reason for collet</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/ServoArmJigA.html</loc>
       <lastmod>2025-12-01T00:48:08+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_jig_A.png</image:loc>
         <image:caption>Jig for making servo bracket</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/A_jig_A_Extra.jpg</image:loc>
         <image:caption>Lots of metel to remove</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/A_jig_A.jpg</image:loc>
         <image:caption>Where all those chips came from</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/A_jig_A_inuse.jpg</image:loc>
         <image:caption>Jig in use</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/RaspberryPi43.html</loc>
       <lastmod>2025-12-01T00:48:04+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Pi4_FullStack_wUnicorn.jpg</image:loc>
         <image:caption>Raspberry Pi 4 stacked &amp;amp; 2 Unicorn HATs</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/TwoUnicorn_Display.jpg</image:loc>
         <image:caption>2 Unicorn displays with signal locations</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/ControlCircuit.html</loc>
       <lastmod>2025-12-01T00:47:42+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/ckt2.png</image:loc>
         <image:caption>Fan Control Curcit diagram</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/ckt24.png</image:loc>
         <image:caption>Fan Control Curcit Layout</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/TortoiseWabbitWiring.html</loc>
       <lastmod>2025-12-01T00:48:12+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Tortoise_Wiring.png</image:loc>
         <image:caption>Tortoise/Wabbit block wiring</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Tortoise_IOBoard.jpg</image:loc>
         <image:caption>IO board to eleminate point-to-point wiring</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/T-W_Board.png</image:loc>
         <image:caption>Scamatic of IO board</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Tortoise_cabels1.png</image:loc>
         <image:caption>Cabeling for Tortoise, Wabbit and IO Board</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/StagingYard3LEDSignals.html</loc>
       <lastmod>2025-12-01T00:48:10+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Parking_Lot_LED.png</image:loc>
         <image:caption>Wiring diagram for short tri-color LED segnals</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Tri_color_signal1.jpg</image:loc>
         <image:caption>Picture of the 3-LED &amp;apos;Parking Lot&amp;apos; signals</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/DwarfSignalAdaptorBoard.html</loc>
       <lastmod>2025-12-01T00:47:47+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/dwarf_interface.jpg</image:loc>
         <image:caption>3v3dc to 12vdc LED signal interface</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/dwarfBoard.png</image:loc>
         <image:caption>Voltage shifter schmatic</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/_build4/index.html</loc>
       <lastmod>2022-10-03T07:11:36+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/_build4/_static/TT_logo.png</image:loc>
         <image:caption>Logo</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/TrackReversingIndicators.html</loc>
       <lastmod>2025-12-01T00:48:12+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Relay_ckt1.png</image:loc>
         <image:caption>Circuit for the Relay board</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/SemaphoreServoBrackets.html</loc>
       <lastmod>2025-12-01T00:48:06+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/brackit6.png</image:loc>
         <image:caption>Final semaphore control bracket</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm2.png</image:loc>
         <image:caption>machanical drawing of servo arm</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post.png</image:loc>
         <image:caption>Post for semaphore arm</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Horn.png</image:loc>
         <image:caption>Servo horn with added 1/16&amp;quot; hole</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/PostontheLathe.html</loc>
       <lastmod>2025-12-01T00:48:02+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_notes.jpg</image:loc>
         <image:caption>Post drawing /w production notes</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step1.jpg</image:loc>
         <image:caption>Setup to start making Post</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step2.jpg</image:loc>
         <image:caption>Positioning material in chuck</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step3.jpg</image:loc>
         <image:caption>Rough cut with HSS</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step4.jpg</image:loc>
         <image:caption>Reduced to size with Carbide blade</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step5.jpg</image:loc>
         <image:caption>Prep for threaed base</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step6.jpg</image:loc>
         <image:caption>Threading base of post</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step7.jpg</image:loc>
         <image:caption>Post with threads cut</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step8.jpg</image:loc>
         <image:caption>Cleanup un-threaded shaft</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step9.jpg</image:loc>
         <image:caption>Cleanup shoulder</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step10.jpg</image:loc>
         <image:caption>Position to cut of finished Post</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step11.jpg</image:loc>
         <image:caption>Cutting of Post</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Post_step12.jpg</image:loc>
         <image:caption>Post finished</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/16-ChannelPWMServoHAT.html</loc>
       <lastmod>2025-12-01T00:47:04+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/ServoHAT1.jpg</image:loc>
         <image:caption>Raspberry Pi PWM HAT with modification</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/IOPiPlus.html</loc>
       <lastmod>2025-12-01T00:47:51+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/iopiplus.jpg</image:loc>
         <image:caption>IO Pi Plus circuit board</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/16-ChannelPWMServoBonnet.html</loc>
       <lastmod>2025-12-01T00:47:04+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.3277</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Servo_Bonnets.jpg</image:loc>
         <image:caption>Three PWM Bonnets</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/simulator/doc/MustSelectOne.html</loc>
       <lastmod>2022-07-04T00:15:32+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.2621</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/doc/lib/sim_error11.png</image:loc>
         <image:caption>Cause of error screen shot</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/simulator/doc/lib/sim_error13.png</image:loc>
         <image:caption>Reminder of error screen shot</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/ArduinoMotorShield.html</loc>
       <lastmod>2025-12-01T00:47:31+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.2621</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Motor%20Shield%20Pin%20Mappings_Page_1.jpg</image:loc>
         <image:caption>Configuration of Motot Shield</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Motor%20Shield%20Pin%20Mappings_Page_2.jpg</image:loc>
         <image:caption>Arduino Motor Shield Recommended Mods</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/7-13Oct.html</loc>
       <lastmod>2025-12-01T00:47:26+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.2621</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/TrainThing.png</image:loc>
         <image:caption>Stylized Train Thing text</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/TT_logo.png</image:loc>
         <image:caption>Stylized Train Thing logo</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DSC00401_1.jpg</image:loc>
         <image:caption>Discarded track tester</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/RaspberryPi3A.html</loc>
       <lastmod>2025-12-01T00:48:04+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.2621</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/rpi3_3A.jpg</image:loc>
         <image:caption>Raspberry Pi 3 B+</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Rpi3A_wHeader.jpg</image:loc>
         <image:caption>Raspberry Pi 3+B&amp;nbsp; with custom header for Turnout sensors</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/_build3/html/index.html</loc>
       <lastmod>2022-09-18T23:58:36+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.2621</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/_build3/html/_static/TT_logo.png</image:loc>
         <image:caption>Logo</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Armmanufacturingsteps.html</loc>
       <lastmod>2025-12-01T00:47:31+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.2621</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_step2.jpg</image:loc>
         <image:caption>Arm material in vice being milled to&amp;nbsp; 0.30&amp;quot; thickness</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_step3.jpg</image:loc>
         <image:caption>arm being drilled on the vertical mill</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_step4.jpg</image:loc>
         <image:caption>Arm mounted on jig B for milling</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_step5.jpg</image:loc>
         <image:caption>short end of arm milled to shape</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_step6.jpg</image:loc>
         <image:caption>long end of arm being milled to shape</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_step7.jpg</image:loc>
         <image:caption>Arm with both ends milled</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_step8.jpg</image:loc>
         <image:caption>Long end of arm milled to 0.060&amp;quot; thickness</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_step9.jpg</image:loc>
         <image:caption>short end of arm milled to thickness</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_step10.jpg</image:loc>
         <image:caption>Column milled to 3/8&amp;quot; diameter</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/angles.png</image:loc>
         <image:caption>geometry drawing to calculate angles for milling arm</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_short_angle.png</image:loc>
         <image:caption>trig formula for angle of short end of arm</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/Arm_long_angle.png</image:loc>
         <image:caption>trig formula for angle of long end of arm</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/Bracketmanufacturing.html</loc>
       <lastmod>2025-12-01T00:47:42+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.2621</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/brackit1.jpg</image:loc>
         <image:caption>bracket marked with sharpie ready for masuring</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/brackit2.jpg</image:loc>
         <image:caption>bracket marked using hight gage</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/brackit3.jpg</image:loc>
         <image:caption>Bracket center drilled</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/brackit4.jpg</image:loc>
         <image:caption>bracket with 12 holes drilled</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/brackit5.jpg</image:loc>
         <image:caption>Bracket with location for servos milled out</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/TestTool.html</loc>
       <lastmod>2025-12-01T00:48:11+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.2097</priority>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/ckt.gif</image:loc>
         <image:caption>test tool schematic</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DSC00397_1.jpg</image:loc>
         <image:caption>Picture of truck for Test Tool 1</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DSC00398_1.jpg</image:loc>
         <image:caption>Picture of truck for Test Tool 2</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DSC00399_1.jpg</image:loc>
         <image:caption>Picture of truck for Test Tool 3</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DSC00400_1.jpg</image:loc>
         <image:caption>Picture of truck for Test Tool 4</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DSC00402_1.jpg</image:loc>
         <image:caption>Picture of Test tool 2</image:caption>
       </image:image>
       <image:image>
         <image:loc>https://www.trainthing.com/documentation/lib/DSC00406_1.jpg</image:loc>
         <image:caption>Picture of Test tool 3</image:caption>
       </image:image>
  </url>
  <url>
       <loc>https://www.trainthing.com/documentation/10-16Feb.html</loc>
       <lastmod>2025-12-01T00:46:47+00:00</lastmod>
       <changefreq>weekly</changefreq>
       <priority>0.2097</priority>
       <image:image>
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       <image:image>
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         <image:caption>Chip Guard interlock-Safty Switch</image:caption>
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       <image:image>
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       <image:image>
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       <image:image>
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       <image:image>
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       <image:image>
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         <image:caption>Picture of Raspberry Pi 3 custome board headers</image:caption>
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       <image:image>
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         <image:caption>schamatic of Raspberry Pi 3 custome board</image:caption>
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       <image:image>
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         <image:caption>Two unicorn LED displaying signal state</image:caption>
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       <image:image>
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         <image:caption>Update of hits from dayly access logs</image:caption>
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       <image:image>
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       <image:image>
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         <image:caption>Graph of page hits from access logs</image:caption>
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       <image:image>
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       <image:image>
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