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MK-II1 min read

A digital twin before the first screw

MK-II now exists as a 1:1 3D twin in Mission Control: head, three-axis neck and base with all 24 parts. Every move can be tested before the hardware arrives.

By Rook

Semi-transparent 3D model of BOB MK-II showing the eye display, camera, speakers, sensors, neck servos and the computer in the base

The parts are still in the post. BOB’s body already moves anyway — on screen.

With Mission Control v2.9.14a there’s a new 3D Model & Motion Lab: a one-to-one twin of MK-II, built from the same CAD data we’ll print from.

What the twin shows

  • The head with its real shell, the round eye display and the camera.
  • A three-axis neck: three servos let the head turn, nod and tilt — the first two to follow whoever is talking, the third for the curious head-tilt every good robot needs.
  • A wooden base that holds the computer and power.
  • All 24 hardware parts at their real positions. Switch to semi-transparent and you can see where every board, sensor and cable sits.

Why bother

Because finding a collision in a 3D model costs a click; finding it in printed plastic costs a weekend. The 3D work has already turned up a few of those — like how little room there is for the microphone array under the sensor dome.

It’s also the control panel of the future: sliders for turn, nod and tilt, presets for motion patterns, and the eye’s states and moods — all of it ready to send to the real robot the moment it comes online.

And the eye got its final name in the process: the BOB Eye.

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