ESP32 Forum

Hi everyone,

I'm designing my first custom ESP32-S3 PCB for a project and would appreciate a schematic review before I order boards.

This is my first custom ESP32 design, and while I've tried to follow the ESP32-S3 reference designs and hardware guidelines, I'm not fully confident that I've wired everything correctly. I'd like to check whether I've made any mistakes or missed any important components before sending the board for fabrication.

I've attached the schematic below.

Any feedback or suggestions would be greatly appreciated. Thank you for taking the time to look it over!

- Your schematic is kind-of hard to follow. Suggest you use power nets (+3v3, GND) at the very least.
- Your EN pin does not have a RC filter to reset the chip on power-up. Add an 1uF from EN to gnd.
- I think USB-C requires GND to be connected to SHIELD at the connector.
- The AP2112K has an internal 3M pulldown from EN to GND, meaning that by default it's powered down. Connect it to Vin if you want to always enable it.
- You don't have anything else hanging off the ESP32? If this is going to be a devboard, suggest at least adding a LED or some headers or something so you have something to blink.