arduino - unable to upload sketch - Stack Overflow
Solved] An error occurred while uploading the sketch. Arduino Nano Code Upload Error avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00 - Arduino Projects and Robotics Tutorial
Common error while uploading the sketch to Arduino || FIX (100% working) - YouTube
Problem uploading to board. - Installation & Troubleshooting - Arduino Forum
How to fix “Error: avrdude” when uploading code to Arduino