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Subject: Re: Looking for double flash LED circuit diagram...

Date: 12/28/02 at 2:11 PM
Posted by: Brian Snell
E-mail: bsnell@lara.on.ca
Message Posted:

In Reply to: Looking for double flash LED circuit diagram... posted by Don Rupanovic on 12/27/02 at 9:47 PM:

Greetings. I would suggest that you use a Cmos 4017 chip as your "steering" chip to switch your basic pulse clocking circuit to whatever combination you may want. This chip is a "divide by 10" progressive counter which can be configured in many different ways. If you feed it with a "one" times clock pulse and take LED1 feed from chip outputs "0" and "1", LED2 feed from outputs "2" and "3", and arrange the 4017 reset from the "4" output, the timer will count "0, 1,2,3" and reset back to "0" on the 4th count and the cycle will repeat ad infinitum. The 4017 can drive an LED directly, but if you require high brightness, you may need to provide a separate LED driver.
Please advise if you require further details.


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