I'm wondering what's the simplest and possibly cheapest portable power arrangement to keep an ATMega328P-PU or ATMega328-PU alive. There are plenty of approaches involving a power regulator (and a power source > 5v) or a boost regulator (and a power source < 5v). However, I'm wondering if it's poss…

Running Arduino-compatible from batter(y|ies) without regulator

Topic		Replies	Views
Batteries with no regulator - Why is this a bad idea? General Guidance	8	632	May 5, 2021
Using a Atmega328 chip with 3.2 to 4.2 volts? (Battery powered) 3rd Party Boards	7	2163	May 6, 2021
Battery power General Electronics	9	2475	May 6, 2021
Standalone atmega328 on breadboard. 3rd Party Boards	10	3080	May 6, 2021
Powering ATmega328 without voltage regulator? 3rd Party Boards	5	3392	May 6, 2021