← All Kali Issues
Arduino
Upload failed
H Hardware
Medium
🔴 Error Message
Cannot upload sketch to Arduino board
📖 What This Means
Wrong board or port selected.
🔧 Step-by-Step Fix
- Check port: ls /dev/ttyACM* /dev/ttyUSB*
- Add permission: sudo usermod -aG dialout $USER
- Select correct board in Arduino IDE