Makey Nutcracker Ornament with LED Sign

Our entry for the Make/Ultimaker ornament contest (#MakingMerry!). Our ornament is a scratch-designed Makey Bot with a movable nutcracker jaw & traditional hat. It was also designed to hold an LED matrix (available from the Maker Shed). [STL files above appear tiny, we're not sure why... zoom!]

For your home

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Printing & Assembly:

-Print Makey's body (low infill works best for keeping overall weight down - we recommend 5-15%)

Note: Our main design printed okay, but the jaw action wasn't very smooth due to support material issues in our slicer - please use minimal support material settings for your printer (dependent upon its overhang & bridging abilities) or use dissolvable support material if possible.

-Print the jaw ("cracker" in the Documents section)

-Clean out any support material left inside the jaw opening on the body

-Slide the jaw into the opening & snap into place in the hinge holes (with the smaller end coming out of the back of the bot)

Optional Electronics & Hangable Hat:

-Print the hat in any color you would like, & glue to the top of Makey's head (this will allow you to hang him from a tree with a hook in the loop of the hat!)

-Obtain and assemble a LED grid kit (from Maker Shed)

Note: Assembly instructions can be found at [], a guide for first time solderers at [], and an easy programming utility at [].

-Now glue the battery pack to Makey's feet & the circuit board to the desirable height in Makey's hands (Feel free to scale the entire project & integrate your own electronics as well!)

That's It! Please give us feedback / information on how your print turned out in the comments below!

Merry Making from our high school design lab!

Materials and methods

-Makey Body (this & all other print files can be found in the "Documents" section)
-Jaw ("cracker")
-Wayne & Layne Blinky Grid LED Matrix Kit ($12.50 in the Maker Shed!)



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9980f1979f719036ba652e091ce669b8?default=blank&size=40adamwolf commented ago

Hey! I'm Adam Wolf, and I'm one of the two designers of that Blinky Grid! Awesome work! Send us an email here ( and I'll mail you a little something. Thanks!

B3d4213074eb00628356ef21c5f908e2?default=blank&size=40Benjamin Broce published this design ago