chips occasionally blowing?

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  1. - 21st May 2006, 21:20 #9
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    kenpo
    kenpo is offline Junior Member
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    here's the tiny circuit for the counter chip. 2 leads from the pic, one to make it count forwards, one to reset (though I never got the chip to reset for some reason)
    and 5 led spots, one resitor as only one led is on at once. easy to understand, bare bones.


    could the motor someho introduce noise (or soemthing, I'm not an engineer) into the power supply?
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