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How a Smartphone Knows Up from Down (accelerometer)

engineerguy · Youtube · 4 HN points · 2 HN comments
HN Theater has aggregated all Hacker News stories and comments that mention engineerguy's video "How a Smartphone Knows Up from Down (accelerometer)".
Youtube Summary
Bill takes apart a smartphone and explains how its accelerometer works. He also shares the essential idea underlying the MEMS production of these devices.This video is based on a chapter from the EngineerGuy team's latest book Eight Amazing Engineering Stories (Learn more at http://www.engineerguy.com/elements)
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Hacker News Stories and Comments

All the comments and stories posted to Hacker News that reference this video.
Here's an actually entertaining video on it: https://www.youtube.com/watch?v=KZVgKu6v808

(the rest of the channel's videos are good too -- the aluminum can video is great)

sleazy_b
That was really great and explained it really well, thanks!
dylan604
So, how well would a smartphone work on the Moon or Mars? (ignoring the fact it is not shielded for cosmic radiation). If the spring&ball accelerators are measuring the effects of gravity, would they notice the rotation when a != 9.81m/s/s?
scottlocklin
The way the asics were written in 2000 it should work. Should work in free-fall also.
I always wondered how the phone knew its orientation. Then I saw this video. Wow.

https://www.youtube.com/watch?v=KZVgKu6v808

This is from a series of videos called "Engineerguy"

mrestko
His videos are wonderful.
May 30, 2012 · 2 points, 0 comments · submitted by pooriaazimi
May 24, 2012 · 2 points, 0 comments · submitted by brodd
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