Re: stepper motor power issues...
- From: Jamie <jamie_ka1lpa_not_valid_after_ka1lpa_@xxxxxxxxxxx>
- Date: Sun, 27 Jan 2008 12:34:15 -0500
vwkafer wrote:
I have a pair of unipolar stepper motors that I am trying to driveYou clearly need more power how ever, before jumping to that have you
with a combination of a PIC16F877 and ULN2003A. My code and
connections seem to be fine, but I am having trouble finding a power
supply/voltage regulator combination that has enough juice to power
both motors. Any suggestions? I thought each motor needed 2Amps, but
it is clearly using more than that because it works when only one is
going but not two. If I assume that they are actually 4amps each
instead of 4 amps total, then how could I get 5volts, 8.5amps (I have
a few other parts drawing a small amount of current)? I don't want to
spend a fortune but I am willing to buy some parts if need be.
checked to make sure you are leaving a little gap between phase chances
from the uC code ? You may want to scope the actual drive signals to
evaluate this.
Also, are you driving the motors with separate ULN2003A chips?
--
"I'd rather have a bottle in front of me than a frontal lobotomy"
http://webpages.charter.net/jamie_5";
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