I would like to see a lot more links and more numbers:U-Haul : http://www.uhaul.com/Storage/
Americal Flyer on wikipedia : http://en.wikipedia.org/wiki/American_Flyer
The Lionel website about Gauge : http://www.lionel.com/forthehobbyist/aboutgauge/
Can you get more information:DC or AC ? If it is DC, is reverse voltage used to drive backward ?
Is is regulated DC, or unregulated DC.
Can you measure the actual current of a train?
Does a train use a few amps ? That's a lot.The Adafruit Motor Shield is for 0.6A (1.2A peak). That's probably not enough for you.I think that both trains use AC motors. Sometimes an extra DC voltage is used for whistles and so. If a DC voltage for whistles is not used, both engines will run without problem on DC (either regulated or unregulated).I still don't understand how the direction is changed. Is that changed with a switch on the transformer ? What does that switch do ?
This is for controlling (normal modern) trains: http://modelrail.otenko.com/arduino/controlling-your-trains-with-an-arduinoThis is a simple circuit I like, just a transistor for PWM and a relay to reverse direction: http://pcbo.dcs.aber.ac.uk/blog/2008/01/29/arduino-model-railway-control/This uses a mosfet for high currents: http://www.picotech.com/applications/pwm_drivers/#chap7May I suggest not to change the trains for other motors or so. I think they better can be kept original.Can someone give some links to websites for controlling these trains ?
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