Circuit Playground Yo-Yo

by mstewmakes, published

Circuit Playground Yo-Yo by mstewmakes Jul 29, 2016
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Update: Adafruit created a version of this project that doesn't need hardware! Check it out here: http://www.thingiverse.com/thing:1766385

Create a programmable yo-yo using Adafruit's Circuit Playground and these 3D printed parts. The assembly is snap/press fit.
For the full instructions check out the Google Doc linked below.
For scaling/dimensions - scroll through the photos above. All dimensions are in inches.

To print this project, you'll need to print two yo-yo body parts along with two snap rings. You'll assemble the yo-yo using an M5 nut, spacer, and hex head screw. If you press the nut and the hex head screw into the plastic while it's still warm, it's a lot easier. Forgot and let the print cool? No problem, just use a little more muscle.

Full CAD via OnShape here:

Live documentation (I'm updating it 7/29/16) here:

Print Settings


FlashForge Creator Pro










This is a pretty straightforward part for most printers. The most challenging parts are the radius on the bottom edge, and the overhangs. Luckily, both of these are cosmetic.

Also, I have printed this at 30 and 100% infill. I actually prefer the 100%, because it gives a good weight to the yo-yo. But if you like a lighter yo-yo, keep it lower!


I'll be adding assembly instructions to my documentation, and I'll copy over here. Most of the parts self align, but I'll try to be as clear as possible.

For now, this is what I've got:

How I Designed This

Edit Log

7/29/16 6 PM - Added files

7/29/16 10 PM - Fixed small misalignment of board alignment pegs. Parts printed before file fixed should still work.

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The model is super tiny (2.35mm diameter) when I load it in Cura. What is the scaling factor that fits the Circuit Playground board?

Hi! For reference, the outer diameter is 2.350 inches, so that's a mm/in conversion. 2.35 mm x 25.4 mm = 59.69 mm, or 2.35 in.

Hello. Thanks for the quick reply.

Hello. Thanks for the quick reply.