← 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

  1. Check port: ls /dev/ttyACM* /dev/ttyUSB*
  2. Add permission: sudo usermod -aG dialout $USER
  3. Select correct board in Arduino IDE
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