Comment by margalabargala

3 months ago

The XIAO series of ESP32s is exactly that.

They are 4x the size though, almost exactly double in both length and width.

https://wiki.seeedstudio.com/XIAO_ESP32C3_Getting_Started/

It's also got 15 times as many GPIO pins as the board in the fine article.

And this PCBA will be smaller than the battery in most applications anyway.

These are nifty. I've used them in production, but if you want to make used of the charger it's difficult.