Upload

• If your board does not appear in the port menu
• Errors when uploading a sketch
• Upload a sketch in Arduino IDE
• If the Arduino IDE freezes or is unresponsive
• Find and stop process blocking a port
• Select board and port in Arduino IDE
• 'Error: avrdude' when uploading
• Error: exit status 1
• Error "invalid device signature" when trying to upload a sketch
• Fix port access on Linux
• Error gnu.io.PortInUseException when uploading code or using the serial monitor on the Mac
• If your board is unresponsive, stuck resetting, or otherwise not working as expected
• My sketch uploads but does not work as expected