A robot arm that draws with you.

A visitor with a red marker and a robot arm with a green marker drawing loops together on a whiteboard.

You draw one mark. Duet looks, understands, and answers in the hand of an artist. You take turns until the piece is done.

Built in a day at Viam's Fine Motor Skills hackathon, New York, September 18 to 19, 2026. Honorable mention.

The demo replays the longest piece of the day, ten exchanges between a visitor and the arm, on the very page that ran the show. The code, the deck, and the build record are on GitHub.

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