Last year at Telford, I saw demonstrated, a superb turntable drive using a stepper motor and associated electronics.
I can neither find the leaflet I had, nor any mention of the beast on t'internet.
All I know is that it wasn't Metalsmiths, but was driving one of their turntables.
Can anyone point me at it, please?
Jeff, all,
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I wrote a program for the Arduino that allowed me to calibrate it for each of the six roads. This worked reasonably well, between the roads at one end, but when I turned it round, it was slightly out of position. Within a couple of half turns, the positions were well and truly wrong. Frustrated, I wrote another sketch, to do simple half, and eventually, full turns. I used the calibration bit of the program to work out the steps for a full turn