Is this the right area for this question?
I apparently accidentally ordered several 5v minis ("Ardchinos?") from Aliexpress. I think I put5 some in the cart, then looked on my phone to see if any had those odd phone discounts, and accidentally bought them all.
Something like 15 of them . . . :o
OK, so I'm out 25 bucks, as nearly everything I'm doing is geared to 3.3v.
My understanding is that the only difference is the voltage regular (or is it that it has both 5.5 and 3.3, but the two models connect to the other) and the clock.
The voltage is a non-issue, as I'll be feeding them controlled power after the regular, anyway.
But the 16mhz is out of spec for the 328p running on 3.3v. I don't need th speed, and saving more power would be nice (although it will usually be asleep).
Would I need to change the crystal, or the multiplier fuses?
Is there any downside to doing this?