How-To Geek

How a Smartphone Knows Up from Down [Video]

Your smartphone knows which way is up, how to orient your screen, and can even sense its speed–but how? In this video, we take a peek inside your phone to see how the accelerometer works.

Courtesy of the Engineer Guy, Bill Hammack, we get an fascinating look at not just how the accelertometer in a smartphone works, but the process by which they are manufactured.

How a Smartphone Knows Up from Down [EngineerGuyVideos via Hack A Day]

Jason Fitzpatrick is a warranty-voiding DIYer who spends his days cracking opening cases and wrestling with code so you don't have to. If it can be modded, optimized, repurposed, or torn apart for fun he's interested (and probably already at the workbench taking it apart). You can follow him on if you'd like.

  • Published 05/23/12

Comments (8)

  1. jv0521

    Amazing! I would love to see videos like this more often.

  2. MJ

    So FINALLY after a year of my MEMS course in my engineering degree i understand how this works. By the way, I don’t even remember what MEMS means, I only know these things were called like that. We had such a bad teacher… ¡she would download the exercises and the exams from the internet and then accuse us of copying!

  3. Bobby

    Did he call that a Google Iphone? 20 second mark…

  4. gifi4

    “Using an old iPhone” is what was said.

  5. duttaapd2009

    Cool!!! Now I love my Android even more LOL :-P

  6. dragonbite

    Interesting. Thanks for the share, and the info!

  7. Bob

    Fries with everything?
    Music with everything?
    Music is usually so distracting when run behind speech that the commentary is spoiled.
    This was the case -for me- in this most interesting article.
    Could we have background effects on left channel and speech on the right so the listener can choose?

  8. kathleen

    WOW – where was he when I was in college. I’d watch his explanations of anything! Urbana is lucky to have him

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