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Ok, it is now built. Working just great, I would make a couple of revisions for the next one I build (probably do a couple for friends). The only change was swapping the 4.7 Zener which regulated VCC for a 7805. The AVR just wasn't enough to take the full load from the zener and it was getting too hot. The 7805 in this circuit doesn't even get warm to the touch. With the AVR in sleep mode I can't even get a reading on my ammeter.
Pictures soon, great success!
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