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.
ESP32-C3 repeatedly disconecting from usb
Re: ESP32-C3 repeatedly disconecting from usb
An ESP32C3 will do that if it has no program in it. Try pulling GPIO9 low, reset it, and program it.
Re: ESP32-C3 repeatedly disconecting from usb
And it just works now.
This should be written somewhere with a very large font
Thank you.
This should be written somewhere with a very large font
Thank you.
Re: ESP32-C3 repeatedly disconecting from usb
I have a ESP32-C3 SuperMini. how can I pull the GPIO9 Low in order to make this work?
Thanks
Thanks
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MicroController
- Posts: 2672
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Re: ESP32-C3 repeatedly disconecting from usb
Press and hold the BOOT button, then press and release the RST button.
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biffwhiffle
- Posts: 1
- Joined: Sat May 30, 2026 4:40 am
Re: ESP32-C3 repeatedly disconecting from usb
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!
Thanks!
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