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Making an IMU?

Posted by Rahul Krishna on September 28, 2011 at 11:12pm

Hello forum,

     I am trying to make an autopilot for a quad-rotor-heli. I just got started on my work and would like to know how to go about it? I just bought (or already have) these items for the auto pilot

1. MMA7361 3-axis accelerometer

2. LISY300AL 1-axis gyro

3. LPR530AL 2- axis gyro

4. HMC6352 magneto

5. Arduino 2560

Initially i'll be implementing these on a prototyping shield for the mega. Any and all help is much appreciated.

 

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Replies

  • Allen Babb September 29, 2011 at 7:03pm

    Making the IMU (more accurately an AHRS, since you have the magnetometer) should be pretty straight forward, combine the data from all three sensor types using complimentary filtering or Kalman filtering. Be careful about the rotation matrices though...

     

    Building a full autopilot from scratch won't be easy, suggest you (or hopefully your team) have a look at some others first so you can get an idea of how they work.

     

     

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