The following issues and solutions were found using debian-based GNU/Linux operating systems.
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Check if the cable is connecting the Nayad board to your computer.
Open Terminal and type:
ls -l /dev/ttyUSB*
you will get something like:
crw-rw---- 1 root dialout 188, 0 5 apr 23.01 ttyUSB0
The “0” at the end of USB might be a different number, or multiple entries might be returned. The data we need is “dialout” (is the group owner of the file).
sudo usermod -a -G <group-name> <username>
sudo usermod -a -G dialout johnny
Logout and log back, then you should have it working.
Solution: sudo ln -s /usr/bin/python3 /usr/bin/python
/.arduino15/packages/esp32/tools/esptool_py/3.0.0/esptool.py", line 38, in <module> import serial ImportError: No module named serial
Problem: pyserial is not installed in your computer.
Solution: on terminal type
pip3 install pyserial