Author Topic: Telling direction of accel from an accelerometer  (Read 2247 times)

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Offline Robotboy86Topic starter

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Telling direction of accel from an accelerometer
« on: April 07, 2009, 03:02:52 PM »
Correct me if I am wrong..and I have done some research into this..  but I am confused on how you can tell direction from an accelerometer.  if you are measuring up and down(Towards earth, away from earth), then I suppose an accel. could do the job quite nicely.. however, left to right, back to front, theres no way to tell which way it is going.  Right?  Either way it would be measuring the same lack of gravity(as it falls towards the earth, approaching 0g).

Am I missing something here? Do some of these accelerometer's also contain some kind of direction telling system??
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Offline Razor Concepts

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Re: Telling direction of accel from an accelerometer
« Reply #1 on: April 07, 2009, 03:05:26 PM »
Imagine an accelerometer as a leaf of grass. Tilt it right and the grass tilts right. Tilt it left and the grass titls left.
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Offline Admin

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Re: Telling direction of accel from an accelerometer
« Reply #2 on: May 07, 2009, 06:38:14 PM »
Sounds like you need an IMU, with gyros . . .
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