I just thought it might be helpful to post a link to the arduino documentary, just in case anyone would want to watch it or send it to someone else:
Also, I thought I would just edit this post to say what I did last Wednesday:
I created what will eventually be a video game controller using a switch, potentiometer, and improvised soldering iron. (The soldering iron was actually much more helpful than scissors with cutting through the small hole. Yes, it was unplugged.) It is a bit clunky, basically an enormous rectangle with some wires poking out the back, but my first priority was attaching the controls, not improving the appearance.
I don’t know how many buttons I should add, or even If I should add more buttons, but I hope that it could eventually control a Scratch game, with the potentiometer sending out (through the arduino, if possible?) a numerical value and the switch only controlling on-and-off. Perhaps the game could have two states, with the light on and the light off, and both states could reveal certain things?
Also, the controller is pictured here:
And the back: