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Topic: Pulling power from external source (Read 619 times) previous topic - next topic



Got my replacement atmega328-pu with arduino bootloader installed today. I stuck it in and it works like a charm :)

Thank god those things are cheap, I got it for just over $5 and it shipped in about a week.

I think I'm going to make a opto-isolation board to go between the arduino and blinder to keep this from happening again. It works fine as long as there is always power from the computer but if that gets unplugged crazy stuff starts to happen and it dies within a few minutes. If instead of hooking the emitter to the +5 I hooked it into power in for the arduino that would work? If that pin does what I think it does it would be regulated so that it wouldn't burn out the chip with unregulated power which is what I think happened.

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