hi there, I've been working extensively on a project and finally had my code finished and uploaded onto my arduino. soon after i had a power spike. i guess i was too thrilled with finally finishing that i forgot to save, and when i rebooted, my final code was lost.
is it possible to retrieve code that is installed onto the arduino?
is it possible to retrieve code that is installed onto the arduino?
You can never get back a human readable C/C++ Sketch code. At best you can read back the machine langage 'Hex code' (the output code from the compiler/linker) but you would not be able to do anything with it other then possibly reloading it back into another blank chip.
Back up your files. It takes at least one lost file before that lesson sets in. 
Lefty