Electronic – power an ESP32 through the Vin pin

esp32power supply

I can't find a clear answer on this through my searches, maybe someone here can help me.

Can I power my ESP32 through the Vin pin?

What is the best way to do it?

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Best Answer

Vin on Arduinos, and on this kind of "compatible" ESP-32 boards, is connected to a voltage regulator on the board, in your case the AMS1117, which is a linear regulator with 3.3V on its output. You can google it to see its specs.

As it is a linear regulator, I wouldn't put too high a voltage on the regulator's input, as it may run hot. It is a low-drop-out regulator, and should work properly with 5V as input voltage.

You could also use the USB to power the board, of course.

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