Hi Hans.

What version of the ESP32 boards did you installed?

Can you go to Tools > Board > Boards Manager and check what is the version you have installed? Mine is 1.0.4.
What is your computer?

I found some people with the same issue. And it seems to be the Arduino IDE version 1.8.10. Maybe downgrading to 1.8.9 solves the problem. Read more about that here: https://forum.arduino.cc/index.php?topic=603700.30

Then, tell me if that solved the issue.

Regards,
Sara

Hi Sara,
thanks for your answer.
I did everything mentioned in the solution from “itsols”, cleared everything, installed new, installed all libraries needed for other projects, but no success. After installation of the ESP32 library there are lots of entrys starting with “ESP”, but nothing with ESP32-CAM.
Addionally under “examples” there is nothing with “ESP”. I did all this without any connection to the cam-board. My computer ist a Sony Vaio laptop, running Linux Mint 19.1.
Any ideas?
Regards, Hans.

Hi Hans,

Did you remember to add the following URL in the Additional Board Manager URL field in the Arduino IDE Preferences control panel?

https://dl.espressif.com/dl/package_esp32_index.json

I haven’t started working on the ESP32-CAM yet, but by looking a little here and there, I may have a solution.

Start by checking that in the list of available boards you don’t already have the following one:

AI Thinker ESP32-CAM

If not, select the following board, which should also work:

ESP32 Wrower Module

The examples should be there:

File > Examples > ESP32 > Camera

Hoping this might help you,
Steph

Hi Sara and Steph,
thats it. The preferences were ok already. I did not know, that I could take the “ESP Wrower” as well. Now everything is ok, the examples are there and I will test it now…
Thanks a lot to you both!
Regards, Hans.

Hi Hans!
Great! I’m glad it is solved!
Thank you Stéphane for helping with this.
Regards,
Sara