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This Scratch extension FTScratchBTSmart is based on Scratch 3.0.
su [oder: sudo -s]
modprobe ftdi_sio
echo "221d 0005" > /sys/bus/usb-serial/drivers/ftdi_sio/new_id
usermod -a -G dialout $USER
cat /etc/udev/rules.d/70.snap.FILENAME.rules
SUBSYSTEM=="usb", ATTR{idVendor}=="221d", ATTR{idProduct}=="0005", GROUP="adm", MODE="0666"
sudo service udev restart
sudo udevadm control --reload-rules