The Etch-a-Sketch was a hugely popular toy in the days before video games and the Internet became ubiquitous. These days, they’re a fun amusement, but can still be difficult to master. Rather than learn the necessary skills himself, [Martin Fitzpatrick] decided to build a machine to draw for him. Enter the Etch-a-Snap.
The build starts with a Raspberry Pi Zero, equipped with the requisite camera. Images taken are processed into a 100×60 pixel image with 1-bit color. At this stage, a network graph representation is built of the image and used to generate commands for the plotting mechanism to draw the scene. Plotting is achieved with stepper motors that turn the knobs through 3D-printed gears. Plotting is slow, with images taking 15 minutes to an hour to “develop”. The system can also be used to draw manually processed images, which can improve results when images are chosen carefully.
It’s a project that combines modern hardware with a classic toy for some interactive fun. We could imagine a large-scale version of this being a great installation at a science museum or MakerFaire. We’ve seen others tackle a computer-controlled Etch-A-Sketch, too. Video after the break.
Drawing on an etch-a-sketch, one more thing a machine can do better than me, still an impressive build though.
But how do you get the images to Instagram?
Integrated Instagram Upload functionality…. turn upside down, and shake…. All the important pictures will be on Instagram.
I was thinking about reversing it so the Pi camera would take pictures of the Etch-A-Sketch, and allow people to submit things for it to draw…. the mechanism to clear it is going to be a faff though.
There is an app on Google called “wire goggles” it looks like a good starting point instead of going low def then converting to lines. The still plot on the vid is unrecognizable.
I always wanted a way to lift the “pen”, drawing letters didn’t look good. I was less than 10 years old and took mine apart to see how it worked and didn’t get much of that stuff on me. I remember thinking that it might be mercury and bad to touch. Then I strung up erector set pulleys and string on a board and tried to make a crude plotter. About 1960!
About the same time….I put a firecracker in my sister’s Etch-A-Sketch. As I remember it looked like a mini nuke going off. Glad I stayed back a ways.
I went through a couple of Pocket Etch-A-Sketch’s making this, one where I drilled the mounting screws in too deep. The powder inside gets *everywhere*… its dusty but turns into a greasy paste on contact. Can’t imagine the mess a firecracker would make!?!
This is ridiculous!
I love it!
Cool project.
Thanks for posting! Had a lot of fun with this.
Bit late, but I’ve put together another video of it taking an actual semi-decent photo! https://www.youtube.com/watch?v=wFrpxqqJUbc&t=6s