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Yes, definitely want to eventually make it out of all surface mount. The power will be either a 1.2V battery or 3.6V li-ion, if the former then we'll definitely need to boost to drive the LED.

Thanks for the response, George. I looked around at the 4060 and it does seem to offer time delays up to 12 hours, which is perfect. In terms of the schematic, what we're trying to do is actually build this timer function on top of a solar-powered garden light (the kind with a photosensor to...

I'm trying to learn about different electronic timers for a project I have (and learn about electronics in general). I want to run a low-power LED lamp (~3V, 250 mA) that is always on, except that it shuts off every night for 10 or 12 hours (user adjustable). Q1: Can the 555 timer do delays...