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Theremin Toy, a 3D-printed theremin
Image: Lexiglass via Thingiverse, CC BY-NC-SA 4.0
Electronic · Theremin

Theremin Toy

A printed enclosure that turns a junior theremin electronics kit into a proper toy

Designed by Lexiglass, published on Thingiverse

CC BY-NC-SA 4.0 No commercial use Build info 2/5

Licence verified on Thingiverse, 20 October 2026.

Get the files on Thingiverse ↗ Watch the video
Needs
The Whadda MadLab junior theremin kit (WSG105)
Hardware
2 × M3 inserts (5 × 5 mm), 2 × M3 × 6 button-head screws, a switch
Built by
The designer's daughter (soldering) and the designer (case)
Electronics
Kit soldering required
Difficulty
Easy
On Thingiverse
13 likes · 0 comments (as of 20 Oct 2026)

About the Theremin toy

The designer's youngest daughter soldered a commercial junior theremin kit during a Christmas holiday. It worked well, but a bare circuit board with sharp wires and a loose battery 'didn't sit well with my designer's heart', so he designed a printed case to make it into a real toy. You'll need the kit itself, a switch (the model he used is linked on the page), two 5 × 5 mm M3 heat-set inserts and two M3 × 6 mm button-head screws to mount the frame in the shell. His video shows it in use.

What you'll need

Printed parts

  • Outer shell and frame

Bought parts

  • Whadda MadLab junior theremin kit (WSG105)
  • A switch (linked on the page)
  • 2 × M3 heat-set inserts, 5 mm × 5 mm
  • 2 × M3 × 6 mm button-head screws

Tools

  • Soldering iron

Video

Play video: Theremin toy electronics project (loads YouTube)
Theremin toy electronics project, Lex van der Sluijs (the designer). Plays from youtube-nocookie.com after you click.

Nothing loads from YouTube until you press play. Video thumbnails are © their creators.

Photos

Thingiverse doesn't let us fetch its gallery, so the photos stay on Thingiverse. See them on Thingiverse ↗

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