Okay, show of hands – how many of you used an Etch-a-Sketch when you were kids? It was a major toy in my early life, and a significant lesson in hand-eye control as I learned to make curved shapes from two knobs, one that made vertical lines, and the other horizontal. So what happens when the Etch-a-Sketch (which hit the toy market in 1960) is combined with an Nintendo Entertainment System controller (circa 1985)? Pure hacking awesomeness is what.
YouTuber alpinedelta32 connected the two so that the direction pad on the controller sends signals to an Arduino microcontroller that runs stepper motors attached to the Etch-A-Sketch knobs. The only catch is that due to the single direction at a time input from the NES controller, it can only do diagonals and curves when taking instructions directly from a program. Maybe he can hook this up to an Atari 2600 joystick next?