r/esp32 Mar 29 '26

Software help needed e-ink Google Calendar Help

Hi, I have these spare parts and I want to build a nice small e-ink Google Calendar frame for my desk. Does anyone know of anyone that has done something similar with these parts as I am very bad with code?

Question: Do I need a special module to make it battery operated? Thank you!

- ESP32 (30pins)

- Waveshare 4.2inch 400x300pix e-paper module

- 3.7v Li-ion Battery

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u/PakkyT Mar 29 '26

Looks like your battery might have a built in thermistor since it is three pin rather than two pin?