sudo nano /etc/udev/rules.d/52-arduino.rules
paste in the following
SUBSYSTEMS=="usb",KERNEL=="ttyACM*",ATTRS{idVendor}=="16c0",ATTRS{idProduct}=="0483",SYMLINK+="USBIO%n",GROUP="dialout",MODE="0666"
#Arduino Uno Auto Tool Changer
#SUBSYSTEMS=="usb"...
