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Propeller Protoboard Sonar and MESMIC

Posted by James Hall on February 22, 2008 at 2:12pm

Side view of MaxBotics sonar range finder (on left, bottom) and MESMIC accelerometer on right(bottom).

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Comments

  • Tom in NOVA April 12, 2009 at 10:12am
    I am still trying to figure what I should try for a range finder (sonar Ping, EZ-4, or
    an Infrared Proximity Sensor- like the Sharp GP2Y0A02YK0F) for auto-landing or landing assist.

    What sort of resolution did you get from the EZ-4 range sensor? Are you plannig to use it pointing downwards for range finding and/or autolanding? Did you test it with different speeds and ground textures (grass, flat surface road, etc)?

    Can you post the code for it?


    Thank you.
  • James Hall February 22, 2008 at 2:25pm
    One other dumb comment, I am NOT using the accelerometer for flight stabilization, I left it in there for measurement of vibration and so forth, it will give me somethign besides temperature to data log. I use the FMA Copilot for flight stabilization.
  • James Hall February 22, 2008 at 2:21pm
    I recommend the Maxbotics EZ-4 range sensor as a strong buy, after some unique filtering, the return is alot more stable then the Ping ))) sensor. Seems a bit more durable, like the type you finder in sonic measuring tapes. The nice thing is that it supports 3 formats for output of the range which by the way is done on the sensor circuit, not via coding. It supports pulse width, serial and analog. I used pulse width as this was the easiest for my amatuer electronics brain could handle.
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