There could be one of the four possible reason behind it. They are:
Wrong Port Selected:
TX/RXled is not blinking, then you may have selected wrong port. If one of both of them are blinking then, you aren't using the wrong port. It might be worth checking again though, sometimes USB COM devices install on strange port numbers.
Board is not in
Arduino Megais not executing the
bootloaderfor some reason. If the programmer is not resetting the micro before attempting to connect, this might be the reason. Try to reset the board (press and release the button) while the programmer is attempting to connect. Sometimes software that runs in a tight loop will prevent the
bootloaderfrom connecting. Barring that, the fuses might have gotten messed up or the code erased. You would need to reflash the bootloader and proper fuses, again, see the appropriate info page for your device.
Arduino Mega 2560 only: ATmega8U/16U software
Might not be working and would need reprogramming. See the Programming section on the info page, you will need the firmware and Atmel-compatible DFU (device firmware update) software on your computer to
There could be hardware damage to the board, AVR(s), or FTDI chip.
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|Asked: 2/6/20, 8:17 PM|
|Seen: 276 times|
|Last updated: 6/18/20, 5:06 AM|