Custom ESP32-C3 board, feedback needed

digaus
Posts: 1
Joined: Tue Oct 31, 2023 1:04 pm

Custom ESP32-C3 board, feedback needed

Postby digaus » Wed Nov 01, 2023 2:31 am

Hello everyone,

I am currently designing my own board and it would be great if someone can look over the schematic/layout before I order it.
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ESP_Sprite
Posts: 9688
Joined: Thu Nov 26, 2015 4:08 am

Re: Custom ESP32-C3 board, feedback needed

Postby ESP_Sprite » Wed Nov 01, 2023 10:33 am

Have you looked at the hardware design guidelines for that chip? At least your power supply needs some work there.

Aside from the stuff in the design guidelines:
- 15pF feels like a bit much for the caps near your crystal. How did you calculate that?
- With those 5.1k resistors in series, USB is never gonna work. Why do you have those there?
- Not sure what antenna you're connecting to the thing, but having that go via two through hole connections (=stubs) might very well mess up your signal strength.

leotordo
Posts: 10
Joined: Thu Feb 02, 2023 1:31 pm

Re: Custom ESP32-C3 board, feedback needed

Postby leotordo » Fri Nov 03, 2023 11:04 am

Hello,
as long as I kwon GPIO8 pin has not a internal resistor, so may be not correct to left it floating to correctly go on "download mode"
Check "strapping pin configuration" on the manual.
Regards
Leotordo

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