[Newbie] charge and power of ESP32 C3 zero

Other Hardware General Electronics
1

Hello everyone.

I'm currently doing a small project that includes an ESP32-C3-Zero arduino board and a couple of accessories (microphone and touch sensor)
It all works well when plugged to the USB but i must now handle the battery and charge aspect.
I intend to have a small 350mAh 3.7V LiPo battery bt i have no ide how to wire and what items i need to handle the charge (USB 5V=> battery 3.7V) and discharge (battery 3.7V => esp 3.3V).

Could someone please point me in the right direction ?

Any help is really appreciated.
Thanks !

Yoirgl

2

I guess buying an ESP32 with a built-in battery holder (something like Amazon.com: 1PC ESP32 Battery Board Development Board Charger V3 Bluetooth Transceiver Module Development Board Battery Holder : Electronics ) would be the easiest.

3

unfortunately i have very strict size limitations as I need it to fit inside a wrist bracelet. But thanks for the suggestion tho.

4

XIAO ESP32C3 has same form but comes with battery management. I haven't tested though.

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5

Ah nice

I didn't even know those existed. i'll check it out.
Otherwise, do you know the parts needed to have those functionalities outise the chip itself ?

Cheers.

6

TP4056 and some voltage converter. Lot of space needed and not very efficient.
Go with a board with builtin BM.

7

Yes i just read about the chip you linked it looks perfect.
Thanks for the info. Chatgpt didn't suggest it :smiley: