Quote Originally Posted by dave View Post
I was thinking of using the -5V and 3V lines on a ATX power supply to power it.
I wouldn't do that. Its going to shift the maxys ground reference down to -5v, I'm not sure how well regulated it will be either...
Whoops! Missed that part about the ATX PSU the first time through.

Dave is right, your ground will end up being at -5 V relative to everything else. Not good!

Better to use a wall-wart to supply the 7-9 volts you need. (Or just use the +12 volts from that ATX power supply...) The Maxyz module has a really good voltage regulator, so you'll be fine - just make sure it doesn't get too hot.

Adam