Recovering files from Arduino Mega 2560 via USB port

Projects Programming
1

Greetings.

I am not sure if this is a programming or technical problem. So please move this thread if this is the wrong section.
I am actually a bit to confused where to start looking for help since google research didn't give me anything that is even in the same ballpark as my problem.

Long story short:
I am using an Arduino Mega 2560 to operate my 3D printer.
I haven't touched my printer in about a year do to a new job and other stuff that keept me busy. In the meantime I had to reset my computer about three times, meaning that I have lost all previous files.

Since I have got a Frankenstein printer (custom silicon heatbead, custom thermisters, nozzle ... etc.) it would be a real pain to call every single company I have bought stuff from and gather all information again and adjust all the scripts to my needs.

So my question is: Is it somehow possible to recover the data I have loaded up to my Arduino Mega and kind of "download" the files from it?

2

Certainly, you can use avrdude to grab the executable code off your board.

3

Well, that was indeed a push in to the right direction, but I am afraid that there is not enough documentation for that program out there to help an untrained guy like me to even get that programm running.
And yes, I mean it. I had to fight my way through the unsorted dowload section, just to see that programm not being willing to run.

4

What would you do with the hex file, if you were able to recover it? It will look nothing like C++ code.

5

I know this is no help at all - but how about going back to your 'backups' from 12 months ago...
I deal with similar problems on a weekly basis.
Unfortunately, there is no substitute for discipline.