# I reverse\-engineered my Pixel Watch's raw PPG sensor to check for sleep apnea

- HackerByte page: <https://hackerbyte.net/en/stories/a-developer-analyzing-their-pixel-watch-s-heart-rate-sensor-data-to-check-for-sl-50425637>
- Original source: <https://www.swetlow.com/blog/pixel-watch-raw-ppg-sleep-apnea/>
- Hacker News discussion: <https://news.ycombinator.com/item?id=50425637>
- Submitted to Hacker News: 2026-11-09T13:54:46.000Z

A developer analyzing their Pixel Watch's heart rate sensor data to check for sleep apnea by reverse\-engineering it.

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