In order to install GoPiGo3 drivers/api to ubuntu the pi user and /home/pi directories are needed/used, and the resulting gopigo3.py from the install_on_ubuntu branch load_robot_constants() does not contain the code (existent in master branch) to check the serial file and create /home/pi/Dexter/gpg3_config.json.
This code really needs to exist, even if the user desires to use a custom config file path.
In order to install GoPiGo3 drivers/api to ubuntu the pi user and /home/pi directories are needed/used, and the resulting gopigo3.py from the install_on_ubuntu branch load_robot_constants() does not contain the code (existent in master branch) to check the serial file and create /home/pi/Dexter/gpg3_config.json.
This code really needs to exist, even if the user desires to use a custom config file path.