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Subject: Re: LED Circuit
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Date: 07/31/01 at 1:55 AM
Posted by: F. Landrey
In Reply to: LED Circuit posted by Matt on 07/29/01 at 4:40 PM:
Try a 4020 IC. It is a counter with a built in variable clock oscillator. A National Semiconductor book would have the pin layouts.
I used this chip to make a halloween mask with blinking/flashing eyes and nostrals for my son several years ago. If I remember right it only took 2 AA batteries to operate it. Be sure to use low current high efficiency LEDs. The current requirement for them is only a couple of mA.
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