I would like to upload my code to the Arduino Mega 2560.

  1. The USB is fried hence I have to use the FTDI
  2. I've a FTDI cable, but it has only 4 wires, Vcc,GND,TX,RX

How do you upload, as the ATmega is not responding to anything?

1 Answer 1


FTDI cables usually have RTS which is used to bring Reset low. If you only have four pins, press the Reset button on the board the moment you start the upload.

  • Thanks, But this need a bit of luck Feb 2, 2016 at 6:06
  • *shrug* - well get an FTDI cable with the extra wire then.
    – Nick Gammon
    Feb 2, 2016 at 7:40
  • Such a simple answer Nick, but works like a charm. I was on the verge of chucking the damn thing out the window, thank you.
    – GerwynM
    Jun 20, 2019 at 1:34

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.