Daylight simulation timer? - Programmers Heaven

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Daylight simulation timer?

Hey, I'm making an carnivorous plant terrarium and I nead a timer to turn light on and off every day. It is suposed to be on about 15 hours every day, and turn on in exact time every morning. I supose it gotta have a crystal, a conuter, a decoder and a flip-flop. Only thing, I need a nice scheme. Anyone can help me?

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  • korkor Posts: 198Member
    : Hey, I'm making an carnivorous plant terrarium and I nead a timer to turn light on and off every day. It is suposed to be on about 15 hours every day, and turn on in exact time every morning. I supose it gotta have a crystal, a conuter, a decoder and a flip-flop. Only thing, I need a nice scheme. Anyone can help me?
    :
    That's a bit overkill when you can make it within a couple percent accuracy with a simple 555 timer, a potentiometer, a capacitor, a decent frequency meter, and a counter.
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