regulating voltage across arduino pins/ladyada motor shield pins

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hi all,

i'm running 2 12v 0.3a stepper motors off of ladyada motor shield plugged arduino uno. motors rated @ 0.3 amps each, they're pulling 1.0 amps each. i'm worried h-bridges blow, they've been doing alright far (about 2 months of testing, on , off). there way regulate current going pins? theories why motors drawing much?


thanks all!

what motors?  what's winding resistance?  carrying more rated current not idea stepper motors, close thermal maximum @ full rated current.


Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > regulating voltage across arduino pins/ladyada motor shield pins


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