ModuleNotFoundError: No module named 'serial'

Development Tools IDE 1.x
1

Hi to all,
I'm using arduino 1.8.13 and when i tried to compile for the esp32_cam i got this error. But if I use the esp8266 works fine.
the full error is:
File "/home/gaston/.arduino15/packages/esp32/tools/esptool_py/3.0.0/esptool.py", line 38, in
import serial
What I tried so far:

  1. Re install arduino
  2. pip install esptool
  3. sym link python with python3
    If I open a terminal and put python I can import serial, so python is linked with python3 but why arduino can't find it?
    Any ideas?
    Gastón
2

Hi to all, about this error, If I remove the sym link between python3 and python the error is gone but this one comes out:
exec: "python": executable file not found in $PATH
Im using arduino on linux 64 opensuse Tumbleweed.
Gastón

3

Try running this command from the command line to install the serial package for Python:

pip3 install pyserial

I would undo that. I think it is not an effective solution.

4

Hi pert,
thanks for your reply. I did the command you mention and the output is:

Requirement already satisfied: pyserial in /usr/lib/python3.8/site-packages (3.5)

What I did so far:

  1. creating symbolic link between python3 and python
  2. re-installing arduino 1.8.13
  3. add permisson to USB port
    When I opened a terminal and type python I'm able to import the serial without any errors, but arduino throws that error. But Im able to prgram the esp8266 and run the program.
    Gastón
5

I always have trouble with all the different names for Python and pip on Linux. You could try this:

pip install pyserial

Maybe that would install the package for the version of Python that is being used by the ESP32 platform.

6

Hi pert,
thanks for your time and quick reply, but I already tried that and still the same. If I remove the symlink between python and python3 throws an error about python not n the $path and give a link to github where others post about this error. But not solved (not for me Im working on linux tumbleweed 64 machine).
I can program the ESP32-CAM with platformio, so the board is working. Is a arduino not using the pyserial but with the esp8266 works like a charm.
Gastón