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.
IMG_3741.png
IMG_3741.png (119.19 KiB) Viewed 1148 times
IMG_3739.png
IMG_3739.png (290.63 KiB) Viewed 1148 times
IMG_3740.png
IMG_3740.png (150.69 KiB) Viewed 1148 times

ESP_Sprite
Posts: 9772
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

Who is online

Users browsing this forum: Bing [Bot] and 61 guests