I know this was essentially sarcasm, but you got me thinking… Seriously, though; conductive ink exists, and you could print this project “normally”, and then just “trace” the lines with a conductive pen.

This led to another thought: just make a “connect-the-dots” version, so that it would be more obvious where you did/didn’t get enough conductivity established (it might be easier to distinguish the pen’s lines from the printer’s lines). Then I realized that it would make it harder to figure out which dots go to the other dots…

So, you could make it smaller, so it would be obvious, like the “connect-the-dot and overclock” thing with certain processors allowed at one point in time. Then it hit me:

If you used carbon paper, would that work? If not, could you do something like PCB etching, but in reverse? As in, use way too much ink, print on photo paper, and then immediately dust some sort of conductive powder (iron, aluminum, et cetera) on it?

There are some more dangerous methods I thought of, but I think this post is too long as it is. Either way, awesome project/idea you put to use, this is one of the first bookmarks I added about cheap(er) DIY Freduino(s).

Oh, and by the way, Thank You!!!

Nie masz jeszcze Arduino? Chcesz rozpocz?? przygod? z elektronik?, ale nie chcesz inwestowa? zbyt wielu pieni?dzy na start? Twoje problemy rozwi??e PAPERduino.
Gdy to zobaczy?em, by?em w szoku. Ludzie maj? naprawd? ciekawe pomys?y. PAPERdu…