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Sensor Fusion on Android Devices: A Revolution in Motion Processing

Google TechTalks · talk · Watch on YouTube

Embedded systems & DIY electronicsConsumer devices & gadgets

What it is

David Sachs of InvenSense explains how gyroscopes, accelerometers and compasses work on their own and together, demonstrated on a modified Android handset. He covers sensor fusion algorithms and why rotation math such as Euler angles matters.

Why Hacker News recommends it

HN recommends it as the definitive talk on mobile motion sensing, including why integrating acceleration twice drifts so badly.

  • 2 people recommended it
  • 2 different months
  • 1 strong recommendations
  • first 2012, last 2026

What HN commenters said

  1. “I'm always happy to share this incredible lecture from many many years ago”

    Why you cannot integrate acceleration twice.

    gregsadetsky, 2026-07 · Strong recommendation · in “Show HN: Physically accurate black hole you can put in your room”

  2. “A great talk on using mobile sensors is here”

    Mobile sensor dead reckoning drifts badly.

    cpitman, 2015-03 · Recommendation · in “Darpa to re-invent GPS navigation without the use of satellites”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: sensor fusion, gyroscope, accelerometer, dead reckoning, android

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