Uncoupling demo

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Uploaded by on Apr 14, 2007

An N-gauge railway controlled my my own circuit board - runs a single train around a loop, stops, uncouples and changes loco. No manual intervention required.

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Howto & Style

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Standard YouTube License

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Uploader Comments (howardamos)

  • Brilliant..

    How did you program them to do that without controlling manually? is this possible on hornby OO gauge trains?

  • I am having trouble posting proper answers on this site. but yes it works in HO/00 too.

  • Hey, this is really interesting. What size is your baseboard btw?

  • 120cm by 64cm. Its in N scale which means that the train has to stop very accurately for the uncoupling to work. A few mm one way means the coupling doesn't lift enough. A few mm the other way causes the carriage to be lifted off the track. When I migrate this to my real layout I hope to be using micro train couplings and so can use an electromagnet instead of the lifting ramp.

  • 2' by 4' roughly

  • The clicks are from solenoid point motors, not relays!

    The setup time was surprisingly little. A day to write the script and a day to get the sensor over the uncoupler aligned correctly. Overall it did take a couple of months but most of the time was just because this 'demo' was a test to prove (and fix) the QTU firmware-this was the first non-trivial autonomous behaviour I had downloaded into it.

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  • this is fantastic

  • Man awesome layout i never would of thought of making a siding round so it can go ither way thanks man now i dont have to ceap moving the trains by hand!! lol.

  • What a superb setup!Change over realys are rather loud and positive though!!What relays are they 100Amp? :)!!Quite the best auto setup I have ever seen,thanks for sharing it with us,all too often we dont get to see what others are doing,isnt the internet great!Provides hours of amusement!!Well done that must have taken quite somw time to construct and set up.

  • No it is not interlocked as such. The circuit board shown in the video controls everything (trains, turnouts, signals, sensors, timing). A script is downloaded to the board telling it exactly what to do. See QtuTrains dotcom for more details.

    For a description and listing of the script see Qtu->Project: Uncoupling demo

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