Bicycle.js

on YouTube ↗27m

" summary

Builds a working mobile bike computer that connects Chrome’s experimental Web Bluetooth (flagged) to BLE sensors — a Mayo gesture ring, a heart rate monitor, and a cycling speed/cadence sensor — parsing binary characteristics, deriving wheel and crank RPM, distance and km/h, and piping streams into the DOM. Uses XStream and cycle.js to represent sensors as reconnecting observable streams, decodes spec formats, requires user interaction to pair, runs offline with a service worker, and demos live data (with a minor negative distance glitch).

AI-written summary · about

" chapters (8)

1. 0:00Introduction
2. 0:56Bluetooth
3. 3:15Maya
4. 4:50Gestures
5. 11:00Bluetooth Devices
6. 18:42Calculate RPM
7. 20:15Live Data
8. 24:28Conclusion

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