I've done a scan by hand, so it's not very aligned, but if I decide to do it via image decoding, I will build some kind of rail to scan it alligned.
This is the scanned image,
http://cdn.anonfiles.com/1332518421172.jpg
although I still don't understand how to decode images with processing after I read through the site.
Please tell me guys, how would it be easier to write the program, via the arduino or via processing?
Even if I do it with the arduino, I think that the mechanical way is easier, because I read digital input, without the need to multiplex the analog inputs.