Upload

• Errors when uploading a sketch
• 'Error: avrdude' when uploading
• The Arduino IDE freezes when I try to upload a program (Windows)
• Error "invalid device signature" when trying to upload a sketch
• Error opening serial port (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 seems to upload successfully but does nothing