AB2 – Dual LEGO EV3 Case (two EV3 bricks in one)
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3D-printed case that joins two LEGO Mindstorms EV3 bricks: the top brick controls the bottom one for more ports.
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Updated at source:
Model information
- Source
- Printables
- Category
- Building Toys
- License
- Creative Commons — Attribution — Noncommercial
AB2 is a 3D-printed case that joins two LEGO Mindstorms EV3 bricks into a single block. The top brick (Master) controls the bottom brick (Slave), which expands the number of motor and sensor ports available to a single EV3 program.
The case was designed in Fusion and keeps the original EV3 layout usable: the screen and the button pad stay at the front, and three printed buttons give access to the controls of the bottom brick (they line up with the buttons of the original EV3). The side panels have LEGO Technic-compatible holes, so beams and pins can be attached directly to the case.
Parts (one STL per part):
- Case body ×1
- Button ×3
- Pin ×2
- Top plate ×1
- Bottom grid ×1
Overall size (assembled): 72 × 48 × 111 mm.
Video of the build and the case working (Master touch sensor driving a motor on the Slave):
The electronics of AB2 will be covered in a separate video.