I'm running two 12v 0.3A stepper motors off of a ladyada motor shield plugged into an Arduino Uno. The motors are rated at 0.3 amps each, but they're pulling 1.0 amps EACH. I'm worried that my h-bridges will blow, but they've been doing alright so far (about 2 months of testing, on and off). Is there a way to regulate the current going into those pins? Any theories as to why are the motors drawing this much?
Thanks very much all!