Editing PIC based Stepper Motor Dancing Analog Clock
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|CQ1, CQ2 = capicators for the crystal | |CQ1, CQ2 = capicators for the crystal | ||
|about 20 pf seems to work, see the PIC16F877A manual | |about 20 pf seems to work, see the PIC16F877A manual | ||
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|Driver chip for stepper. ULN2803. Good for up to .5 amp 35 volts I think. Could use discrete transistors ( possibly darlingtons ) if you want higher current. You should not need more current unless you make a really big clock. | |Driver chip for stepper. ULN2803. Good for up to .5 amp 35 volts I think. Could use discrete transistors ( possibly darlingtons ) if you want higher current. You should not need more current unless you make a really big clock. | ||
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