Wearable Signal Tools · Data collection platform
Sleeptracker (SleepLogger for Pixel Watch)
Pixel Watch (Wear OS) raw PPG + accel/gyro + ECG overnight logger for sleep-apnea self-experiments
What is Sleeptracker (SleepLogger for Pixel Watch)?
MIT Wear OS app + TypeScript analysis that logs accelerometer/gyroscope (25 Hz), heart-rate (~1 Hz), undocumented Google raw PPG (100 Hz) and crown ECG on Pixel Watch 1, with browser live analyzer for beats/HRV/breathing and optional Fitbit SpO2/stage comparison. Built as a sleep-apnea self-experiment; not a medical device.
Sleeptracker (SleepLogger for Pixel Watch) at a glance
- Signals
- Category
- Data collection platform · also visualization, signal processing
- Domains
- sleep, HRV, SpO2, respiration, device integration
- Language
- TypeScript
- Licence
- MIT
- Commercial use
- yes
- Maintenance
- Commit in the last 12 months (as of Oct 21, 2026)
- Last commit
- Nov 6, 2026
- Latest release
- No published releases
- Repository
- Not archived
Code & repos
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Summary, licence and commercial-use fields are shown as recorded for this project. Maintenance is computed from the last commit date. Check the project’s own repository for its current licence and status.