Upload

• If your board does not appear in the port menu
• If the Arduino IDE freezes or is unresponsive
• Find and stop process blocking a port
• Find the port your board is connected to
• Errors when uploading a sketch
• 'Error: avrdude' when uploading
• Error "invalid device signature" when trying to upload a sketch
• avrdude: ser_open(): can't open device: Permission denied (Linux)
• Error gnu.io.PortInUseException when uploading code or using the serial monitor on the Mac
• Device not found on ports and the board is continuously resetting
• My sketch uploads but does not work as expected