ESP32-C3 repeatedly disconecting from usb

Timotej
Posts: 2
Joined: Sun Oct 08, 2023 9:13 am

ESP32-C3 repeatedly disconecting from usb

Postby Timotej » Sun Oct 08, 2023 11:23 am

I've connected my brand new ESP32-C3-02 module:

(D+ to pin 19, D- to pin 18, 3.3V to a 3.3V regulator, and the regulator into the USB's 5V, GND to GND, and pin EN through a 10k ohm resistor to 3.3V).

But when I connect the USB connector into my Windows 10 computer, I hear the sound of a connected device, but about one second later, I hear the sound of a disconnecting device, and every next second or so, I just hear the disconnecting sound again and again. When I tried a different PC, it had the same problem.

I don't know what I should try; I tried 5 different modules, and it happened with every one of them. Maybe new USB drivers? Maybe something with efuse? I don't know. I would really appreciate your help or any ideas.

Sprite
Espressif staff
Espressif staff
Posts: 10617
Joined: Thu Nov 26, 2015 4:08 am

Re: ESP32-C3 repeatedly disconecting from usb

Postby Sprite » Sun Oct 08, 2023 12:39 pm

An ESP32C3 will do that if it has no program in it. Try pulling GPIO9 low, reset it, and program it.

Timotej
Posts: 2
Joined: Sun Oct 08, 2023 9:13 am

Re: ESP32-C3 repeatedly disconecting from usb

Postby Timotej » Sun Oct 08, 2023 1:07 pm

And it just works now.
This should be written somewhere with a very large font :)

Thank you.

wiltgen
Posts: 1
Joined: Wed Dec 25, 2024 8:04 pm

Re: ESP32-C3 repeatedly disconecting from usb

Postby wiltgen » Wed Dec 25, 2024 8:07 pm

I have a ESP32-C3 SuperMini. how can I pull the GPIO9 Low in order to make this work?

Thanks

MicroController
Posts: 2672
Joined: Mon Oct 17, 2022 7:38 pm
Location: Europe, Germany

Re: ESP32-C3 repeatedly disconecting from usb

Postby MicroController » Thu Dec 26, 2024 9:19 am

Press and hold the BOOT button, then press and release the RST button.

kalharaCK
Posts: 1
Joined: Tue Sep 30, 2025 1:22 pm

Re: ESP32-C3 repeatedly disconecting from usb

Postby kalharaCK » Tue Sep 30, 2025 1:25 pm

thank you very much broo

biffwhiffle
Posts: 1
Joined: Sat May 30, 2026 4:40 am

Re: ESP32-C3 repeatedly disconecting from usb

Postby biffwhiffle » Sat May 30, 2026 4:43 am

MicroController, your Boot/Rst suggestion allowed me to end an entire day of suffering trying to get Docker,KVM/QEMU and virtualbox vm's talking to a C3 board through vscode.

Thanks!

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