![]() ![]() īreadboard compatible slide switch x 1 (optional, but it makes turning the EtchABot on/off much easier than disconnecting the power cable each time).īarrel jack to breadboard connector x 1.The 10 cm length look neater when they’re all wired up, but you can use any length īreadboard wires – Male to Female x 18 and Male to Male x 5 (approx).Īrduino Uno x 1, and USB cable to connect it to your computer for programming.You will need a 2mm allen key to tighten the set screws in the metal shaft couplers Design files at ĥmm to 5mm Flexible shaft couplers x 2 Get the kind that tightens with 4 set screws. Be sure to cut the right size parts for the Etch A Sketch you are using (Pocket or Travel size). Laser cut wooden parts from 1/8" MDF or similar wood.ULN2003 stepper motor drivers x 3 (these often come pre-packaged with the 28BYJ-48 stepper motors).Etch a Sketch, Pocket(shown) or Travel size x 1.This is a long Instructable, so here is a table of contents if you'd like to skip to a topic: I'm linking to GitHub rather than including the files because EtchABot is a work in progress, and that's where you'll find the most up-to-date files. Once you pick a size, you can get the design files and code from. ![]() The image above also shows that you can personalize your EtchABot with 1" round Avery labels or by etching your name/logo on the wooden frame. Otherwise, the assembly instructions are identical. The pocket size frame is somewhat more stable and easier to rotate due to its lighter weight. The only mechanical difference between the two versions is the size and scaling of the wooden frame. You can build an EtchABot with either the pocket size (small) or the travel size (medium) Etch A Sketch. I really do hope that people will be able to build and program their own EtchABots, which is why this Instructable has gotten so long and detailed (sorry!) I've gotten a lot of ideas from reading about other people's projects, so I hope that you'll find some inspiration, or at least something interesting to look at in this Instructable. Using the EtchABot Arduino library, you can program it with other functionality too. The example sketches allow you to run EtchABot with a variety of functions - as an analog clock, Spirograph, joystick controlled doodler and image replicating CNC drawing machine. Anyone with a basic knowledge of breadboard wiring and Arduino programming can construct and run it. There is no glue, cutting, drilling or soldering required. What’s original about the EtchABot is its easy-to-build frame and the Arduino library provided to control it. Other projects have used stepper motors to turn Etch A Sketches into simple CNC machines that can draw portraits, patterns and even tell digital time. It's far from the first motorized Etch A Sketch on the internet. The EtchABot uses an Arduino to turn an Etch A Sketch into a self-erasing CNC (Computer Numerical Control) drawing machine.
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