To test if power was actually coming out of analog pins 2&3, I put an led in the pins, and it turned on
Hopefully with a resistor?
Does anyone know what voltage Nyko nunchucks are meant to run at?
It may be that they are designed to run on +3.3V. Not knowing how much current it draws, I wouldn't recommend wiring the 3.3V pin to the power pin, but do you by chance have a 3.3v regulator? Or perhaps 2 AA/AAA batteries in series?
I might add that I've used the Nintendo Nunchuck with the Wiichuck following the examples exactly, and I get perfect results.