I just learned that Arduino Uno R3 microcontrollers DC output ~5 volts, I tested mine and saw it was 4v. I need to get up to 12v, I know that there are step-up and step-down circuits that can do this but I can only find ones that go from 12v dc down to 4v dc. Does anyone know a way to get 4v dc up t…

How can you turn 4v dc into 12v dc

Paul_B November 27, 2021, 10:23am 4

Are you referring to an I/O pin set to OUTPUT, or the "5V" pin.

Neither should be used to "power" anything. Why do you "need" 12V?

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