Seeeduino V4 (SKU: 102010004)
A1: Please read the instuction here to make Arduino IDE work without root permission in Ubuntu. Please find below the relevant part.
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5. Ofcourse you don't want to be running the arduino ide as root, so add your user to the groups tty and dialout like so:
sudo usermod -a -G tty yourUserName
sudo usermod -a -G dialout yourUserName
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