Mega 2560, USB converter problem

Hi guys

I am trying to use an external USB converter instead of the on-board USB controller. However, I cannot write to the Mega 2560.

I have connected 5V, GND, Tx and Rx. (and crossed them :slight_smile:

Is this not the way to do it? Am I missing something?


Hard to tell but I hope that VCC goes to VIN at least.

Also hard to tell which RX, TX lines you are connected to in that picture as there are 4 on the mega.

Not seeing a reset line (DTR) or anything as a substitute reset line ?
Is the USB broken ?

Hi, yes, 5V goes to 5V, GND to GND, Rx to Tx and Tx to Rx. There is no DTR on the converter board.
I tried holding the reset button upon uploading the sketch, didn't do anything for me.

Rx was connected to pin 1 and Tx was connected to pin 0.

Does your OS see the converter on its own ?
If not you might need drivers or it could be faulty (loopback test it)

What are you selecting for programmer ?
Has to match the converter.