which pins do i use to power an ESP32

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ongone93 asked 6 years ago

Hello,
I’m actually working on a project based on ESP32. I would to know which pins of the esp32 do i use to connect a battery on, and what type of battery is suitable.
Thanks for your assistance.

1 Answers

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Sara Santos Staff answered 6 years ago

Hi.
You can power the ESP32 through the 3V3 pin or through the Vin pin.

Rechargeable Li-ion batteries are a good option. Like this ones: https://makeradvisor.com/tools/rechargeable-li-ion-batteries/

These batteries output approximately 4.2V when fully charged. You can add a voltage regulator circuit to power the ESP32 through the 3.3V pin. You can use the same voltage regulator circuit we use in this project: https://randomnerdtutorials.com/esp8266-voltage-regulator-lipo-and-li-ion-batteries/ (the project is for the ESP8266, but the circuit works fine for the ESP32 too).

So, you need these components for the circuit:

I hope this helps.
Let me know if you have further questions.
Regards,
Sara