Re: Stepper Driver Circuit effecting thermocouple temperature??

Quote

I am currently supplying all the motors with the 5V rail. I may move to 12V eventually, but at the moment I'm keeping the current through the motors down. 

I believe the stoppers are running in constant current mode so running them at 5 volts probably won't make a difference. Id move them onto the 12v rail and use the trim puts on the polulo boards to set the current. This should also help you temperature problem.