here is the schematic of 4 ampere stepper motor driver it comes with pwm chopping by which we can control the current flowing. The ic’s i have used for this are below listed
L297(stepper translator)
L6203(5 A max)
7805(5 volt linear regulator)
40106(inverting Schmitt trigger)
mct2e or 4n33 opto coupler (for isolating pulse and direction)
dip switch for selection
that’s all folks
if you guys need any help just comment the post
download the eagle sch file http://www.mediafire.com/?1cfq34789i8vv
for more information and discussion please go to our discussion forum at forum.embedded-labs.com
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