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ESP32-CAM USB port not detected by Arduino IDE on Ubuntu Linux

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mbogelund
(@mbogelund)
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Joined: 5 years ago
Posts: 23
Topic starter  

Hi all,

I'm stuck with getting the Arduino IDE on my Ubuntu laptop to detect my ESP32-CAM, and I hope you can help me.

It's the ESP32-CAM with USB "motherboard", I have it plugged into my laptop's USB port. When I try to compile a sketch and upload it I get an error saying

"A fatal error occurred: Could not open /dev/ttyACM0, the port doesn't exist
Failed uploading: uploading error: exit status 2"

My troubleshooting so far:

  • I know the USB cable is working, because it works with an Arduino Nano Every I have
  • I know it's the correct device (ttyACM0), because that's the device that my Nano Every shows up on when I connect it to that USB port.
  • I know the ESP32-CAM "motherboard" is detected, because lsusb gives me "Bus 001 Device 010: ID 1a86:7523 QinHeng Electronics CH340 serial converter" when I connect it.
  • The ttyACM0 device only exists when I connect my Nano Every - it vanishes when I disconnect the Every and doesn't appear when I connect the ESP32-CAM

What can I try in order to make the Arduino IDE talk to my ESP32-CAM?

This topic was modified 3 months ago by mbogelund

   
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Ron
 Ron
(@zander)
Father of a miniature Wookie
Joined: 3 years ago
Posts: 6828
 

@mbogelund I assume you are holding the BOOT button down when you are uploading the sketch.

If you have a magnifying glass check the USB chip, it may be a CP2102 rather than a CH340. If so install that driver. I have at least a dozen of the esp32cam and MB boards, some require the boot button to be pressed during upload some do not. I think it's a function of what chip you have.

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
Sure you can learn to be a programmer, it will take the same amount of time for me to learn to be a Doctor.


   
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mbogelund
(@mbogelund)
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Posts: 23
Topic starter  

@zander Yes, I've uploaded both with the button pressed and without pressing it.

I don't know how to install that particular driver on Linux.

 


   
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mbogelund
(@mbogelund)
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Posts: 23
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@zander I've looked at the chip, and as far as I can see, it says CH340.

 


   
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Ron
 Ron
(@zander)
Father of a miniature Wookie
Joined: 3 years ago
Posts: 6828
 

Posted by: @mbogelund

@zander Yes, I've uploaded both with the button pressed and without pressing it.

I don't know how to install that particular driver on Linux.

 

Either do I , just google it.

 

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
Sure you can learn to be a programmer, it will take the same amount of time for me to learn to be a Doctor.


   
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Ron
 Ron
(@zander)
Father of a miniature Wookie
Joined: 3 years ago
Posts: 6828
 

@mbogelund Make sure the serial port is closed. Can you show me the IDE output just before the error message, just copy the last dozen lines or so.

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
Sure you can learn to be a programmer, it will take the same amount of time for me to learn to be a Doctor.


   
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mbogelund
(@mbogelund)
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Joined: 5 years ago
Posts: 23
Topic starter  

I resolved it. the solution was quite simple, I'll put it here for reference.

Basically, I just had to remove support for Braille displays, as stated by this Ask Ubuntu Stack Exchange post:

https://askubuntu.com/questions/1403705/dev-ttyusb0-not-present-in-ubuntu-22-04

I  simply had to do

sudo apt remove brltty

and now it works.

Thanks @zander for your suggestions.


   
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Ron
 Ron
(@zander)
Father of a miniature Wookie
Joined: 3 years ago
Posts: 6828
 

@mbogelund I wonder how it got there in the first place.

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
Sure you can learn to be a programmer, it will take the same amount of time for me to learn to be a Doctor.


   
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