Can the PICA board (namely the endstop connections) handle 12V? I know the Arduino Mega can theoretically handle that much input voltage but I was wondering if the PICA will be damaged from it. I'm looking to get an 8mm inductive probe, and I can't seem to find any that run off of 5V. If possible I would rather not complicate the electronics with a voltage divider.
The limiting factor there isn't the PICA board, it's the Arduino Mega. The endstop inputs go directly to the Mega, which specs a max 5.5V on the digital pins (maybe you're thinking the power input which can handle 12V?)
That makes sense, thanks.