Originally Posted by
gtrdude
Firstly thanks to Alan for designing the Picstep.
Voltages from the PP outputs are 3.3v with nothing connected. With the Picstep connected it seems to sag to around 1.3v or so. As I understand it, the pull up resistors on the picstep should pull the signal high (+5v), then when the PP signal is low pin5 will be pulled low. This doesn't seem to be happening.
Am I making a fundamental error somewhere? I'm not an electronics noob but I'm not an expert either. I have designed my own Pic based circuits before. Does anyone know what's happening here?
cheers,
Paul