Any Arduino geeks?

[GR63]

I have what might be simple to people above "numpty" skill level?

I have a programmed Arduino board and want to clone the existing sketch (which I dont have) to another board. Is that do-able assuming security bit not set and IF so, any chance of explaining (like I am five) how, please?

 

[Frozennova]

You can read the flash memory of an arduino using avrdude

This will give you the compiled binary, this will give you the compiled binary which can be programmed to another arduino with avrdude but you cannot read back the sketch.

Dissembling the compiled binary to either understand the code or modify it is relatively complex although easier with an AVR than say something that used an ARM processor

 

[GR63]

Thanks... I had read some stuff about avrdude but didnt find the commands I needed... I'll check again

 

[Frozennova]

This article covers all of the command line switches you need

https://www.evilmadscientist.com/2011/avr-basics-reading-and-writing-flash-contents/