I recently got a TechKeys business card and I'm lost. What I'd like to do is (if possible) add a few more keys to this device and use it as the host for a custom input panel. Something like a 10key keyboard but not with the keys all in one place, and as many keys as possible.
I've been looking through the source files found in this post
https://geekhack.org/index.php?topic=53378.0 but like I said I'm lost.
What I don't understand is how inputs are defined, I assume that in main_techkeys.c lines 19 through 27 defines what each key does and lines 29 and 30 defines the actual keys. I don't know where the signal input from the physical device being captured. Is that what's going on in platforms.c? If so I see things like r1 through r5 commented (and c1 through c14). If that is the signal being captured where is it going in the code from here?
