Tramcar Trev said:
I was discussing this with someone and said when I found the circuit I'd post it. Well her 'tis; http://www.members.optusnet.com.au/nswmn/con_brill_dc.htm
Trev I think it was me that you were discussing this with.
The output of the motor controller I am using has a constant voltage across the motor output but the motor does not move.
The LEDs across the motor output both light so all I can think of is that there is not enough current to move the motor but enough to light the LEDs.
12V across a motor at throttle neutral and it does not move, move throttle either FWD or REV and motor moves LEDs both stay lit.
It is the weirdest thing I have seen in my time as an electronics tech, all I can guess is that the output is from a controlled current source i.e. voltage is present but current is limited depending on throttle position.
The OEM told me that I could not get directional lighting by putting LEDs across the motor output but sold me a radio controlled relay to do the switching (maybe they saw me coming).