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Lego STEM, including Mindstorms, Powered Up, etc..

Robot Inventor

The 51515 is the successor to the EV3 31313. Its software is much more approachable and modern, but its hackability appears to be less than 31313 due to no USB or SD slot.

Mindstorms EV3

  • EV3 programming software is available via cask: brew cask install lego-mindstorms-ev3


In 2019 LEGO started shipping a microSD card for developing MicroPython using vscode. This setup is based on ev3dev, including having an ev3dev splash screen on boot and the default ev3dev ssh credentials. On the vscode side, one interesting thing is that when you install the LEGO® Mindstorms® EV3 MicroPython extension, it installs ev3dev-browser

Great Ball Contraption

"A great ball contraption (GBC) is a machine which receives soccer balls or basketballs from one module and passes them to another module, rather like a bucket brigade. Modules built according to the GBC standard can be assembled into a collaborative display without pre-planning or modification." -

Ball specs


  • Diameter: 14mm
  • Weight: ~1.5g

Lego Mario

Lego Mario is an electronic physical lego game device that has an accelerometer and a colored barcode reader. It interfaces with an smartphone/tablet app to enhance the physical gaming experience with instructions, a scoreboard, etc.. The barcodes that Mario reads have been reverse engineered and can be printed up with a color accurate printer.


See also