Also one other question, what is the safe range of voltage you can power arduino from without using a regulator? Like is 6v from 4 aa batteries fine? What about 4.8v from 4 rechargeable AA batteries?
Thanks for those diagrams of the voltage regulator. I'm still getting 2 different stories about the capacitor sizes though, I had copied and pasted from the reference and it said a 10uf and 1uf, and "retrolefty" mentions a big and small cap, but "pluggy" said he read in the reference somewhere that its 2 10uf ones, I've also heard other sources seemingly using 2 identical ones. Does it work both ways, or is one method better?
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