platformIO Permission denied: '/dev/ttyUSB0'
# Recommended
curl -fsSL https://raw.githubusercontent.com/platformio/platformio-core/master/scripts/99-platformio-udev.rules | sudo tee /etc/udev/rules.d/99-platformio-udev.rules
# OR, manually download and copy this file to destination folder
sudo cp 99-platformio-udev.rules /etc/udev/rules.d/99-platformio-udev.rules