# SyncDigit

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [QueenTesa Fuggett](https://cerebralvalley.ai/u/QueenTesa)
- **GitHub:** https://github.com/qfuggett/SyncDigit
- **Demo video:** https://youtu.be/Wd5GnkSGTbg
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/5129

SyncDigit explores an assistive finger for people with congenital hand differences, including syndactyly and symbrachydactyly, where a finger may be incomplete or missing. The concept is an appendage that attaches at the base of the incomplete finger and moves with the fingers next to it: adjustment in concert, not independent intelligent movement.

This submission is a simulation prototype, not a physical device. The user chooses which finger is missing and which adjacent finger will drive it, then captures three poses: open, closed as far as comfortable, and a relaxed partial curl. Muse Spark 1.3, via the Meta Model API, selects a bounded calibration profile from those measurements (mirror, gentle_range, or full_range). The profile is saved per finger.

During use, MediaPipe tracks the hand from the webcam each frame. A Python controller maps, smooths, and limits the motion, and a MuJoCo simulation displays the three-segment finger, driven kinematically by setting joint positions directly. For a missing index finger, a pointing gesture combines source-finger curl with thumb position, letting the simulated finger straighten to point. Other fingers mirror and calibrate only.

The webcam stands in for the micro-cameras that would sit on the side of a real appendage to watch neighboring fingers. Physical attachment, gripping under load, and clinical usefulness all require further development and evaluation. The AI here is a calibration and supervision aid. It is not trained for, or clinically validated for, assistive movement.

## More from Meta Global AI Developer Hackathon

- [Ethan Gritli](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/5126)
- [TareKV](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/5127)
- [Adam Je](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/5128)
- [OurTake](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/5130)
- [Air5280](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/5131)
- [Fold](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/5132)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/5129. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt