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      07-25-2006, 02:23 PM   #32
msinfo_us
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Quote:
Originally Posted by Josh49
Out of curiosity why not use a blinking LED ($2) from Radio Shack and a simple relay? The relay would be normally closed, and the ignition would open it so it was off when your ignition was on. Your other circuit could be the blinking LED and two AA batteries. Seems much simpler IMO.

Did the blinking LED blink too fast for your tastes?? Just curious why you took it so far..
I am sure there are many more solutions. This solution was extreemly simple to me. The specs of 555 timer are very flexible and match perfectly with what I had to work with (freq, voltage, current). I did not want to depend on batteries, EM relays and etc. I wanted minimum current requirements and fexible frequency range -- this microchip just fits the bill.