Updated ICSP atmega16u2 programming from mega 2560 to nano r3

Projects General Guidance
1

I need UPDATED info on flashing the Uno R3 atmega16u2 serial to usb chip from a mega 2560 R3. Everything i have found dates back from 2014-2019.

The official arduino site does not fully cover completely reflashing the chip.

I currently have an Uno that will not even show up connected to usb. USB cable swapped, power cycled, etc etc...

So I need to reflash it through ICSP. I know the wireing and have tried multiple ways from searches.

Even shorted the pins to reset the chip into DFU mode, still a no go via USB.

Reguardless i also need to know how to add a board to the boards list to be able to flash it as none of the other examples show up in boards.

THANKS!

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Your topic was MOVED to its current forum category which is more appropriate than the original as it has nothing to do with Installation and Troubleshooting of the IDE

1 Like
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As an engineer I can se the fascination in the project You're up to. Being retired having an other idea about the values in life I would say: Buy a new board/circuit.
Use Your time to work and earn money paying new stuff is often time preserving.

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Thanks, wasnt sure where to put it :crazy_face:

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The board is not dead, simply just need to reflash the atmega16u2

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Bump bumppity bump bumpitty bump bump marie!!!!

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