[mutantblond]

If I use AnalogChannel(1), and plug the PWM into the pins closest to the PD supply connector, I get the same result.
I've checked that the PWM cable is ok - the PWM inputs into the AB board are what they should be.
The other thing that happens that's kinda strange is when I disable the 'bot, the While loop keeps going - I actually have a counter in that loop that prints out at the same time as the Voltage is being printed out.