Linux users often face the “Tools > Serial Port” issue in Arduino IDE. Follow these steps to resolve it:
1. Adjust Device Permissions
Run this command to grant access:
sudo chmod a+rw /dev/ttyACM0
2. Install Arduino IDE and Dependencies
Install the required packages:
sudo apt-get install arduino arduino-core arduino-mk
3. Add User to the dialout Group
Grant necessary permissions:
sudo gpasswd -a $USER dialout
4. Restart Your System
Reboot to apply changes.
5. Test with the Blink Sketch
Open File > Examples > 01.Basic > Blink, modify delay(1000) to delay(60), and upload the sketch. If the LED blinks faster, everything works!