Yeah, so I heard that this is THE thing to make if you want to try your skill, so whatever. here it is. And because of the way I built it, the program is actually ridiculously easy: the parallel paper feeds and the linked scanning and printing arms means that all you do is say run motor A (the head movement motor) from touch1=pressed to touch2=pressed, and all the while, if lightsensor3 reads dark, instruct motor2 (pen motor) to make a dot. then, once the line is finished, advance feed motor3 by a tiny increment to do the next line. I hate programming, so i thought this was kind of a clever mechanical solution to what could otherwise be a fairly complicated problem. Additionally, the machine, with the heads all the way to the farthest left, is actually really compact. Anyways, that's it. Thanks to all the other copy machines artists out there who gave inspiration for this--I know mine is neither as elegant nor as functional, but it works, and I'm kinda happy with it.