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Image: youtube.com · Video thumbnail: YouTube: Opus 5.5 Designed This Robot. I Just Built It. (And It WORKS!)

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Greg: a 3D-printed high-five robot arm designed by Opus

Claude Opus 5.5 designed a 3D-printed robot arm that spots a raised palm and gives it a high five; the maker just built it, and it works.

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Credits

  • Video channel Better Stack Source ↗

Earliest dated source: 5 Nov 2026

Video ↗

The full story

Greg is a 3D-printed robot arm with one job: spot a raised palm and give it a high five. Claude Opus 5.5 designed the parts in Blender and wrote the firmware and vision software; the maker printed, soldered and assembled it, mistakes included.

The video covers fit tests, Claude's biggest design flaw, an ESP32 servo bug and adding a fifth joint. The design files, code and parts list are on GitHub.

How it was done

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Sources

From the maker's own write-up or code. We summarise what they report; we haven't tested it ourselves.

  • YouTube: Opus 5.5 Designed This Robot. I Just Built It. (And It WORKS!)Videoyoutube.com
    Video channel: Better StackPublished 5 Nov 2026

    The video from Better Stack.

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