Arducopter testing sonar altitude hold03:23

A test after getting the altitude hold with sonar fixed on my arducopter hexa.
I’m flying it in my garden and after switching to alt_hold I don’t touch my throttle stick till the end of the video, when I have to land.
You can clearly see that the copter adjusts altitude when flying over a small hedge. It’s almost like a terrain following radar !

Category: Altitude, Quadcoter Videos
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    1. u4eake

      I’ve explained it in my blog on DIY drones. Link is in the comment on my
      other video about arducopter showleds (search for this on youtube and
      you’ll find it, can’t post link here)

    2. pghafizi

      nice…..good job dude

    3. zaviac778

      Very cool. I’m just learning about these arducopters. 

    4. Jason Till

      HI could you tell me what sonar unit you used and fitting advice ? I have
      just got the apm 2.5 and would like accurate alt hold.. Thanks 

    5. Michiel van Son

      Hi! Could you please explain how you get your leds to blink when battery is
      almost empty? Thanks

    6. u4eake

      I used the maxbotix mb1280 I think. Most important was to mount the sonar
      far away from electrical interference like ESC’s and motors. I have it at
      the bottom of my stabilised cameramount, which also keeps it pointing down.

    7. u4eake

      There’s a blog about it on DIYdrones. Search for u4eake’s showleds. I also
      have a demovideo about it. But the latest arducopter version on which it
      works is 2.7.1 I think. Later versions have “copterleds” enabled by
      default, which provide similar functionality : 

    8. Brandon Kalinowski

      Add some expo to your radio throttle active only when on stabilize and you
      will find it much easier to hold a desired altitude.

    9. 許裕鴻

      I’m using sonar to do althold , but it always fail , I can receive the
      sonar altitude on dataflash , but it can’t keep distance flying when I put
      somthing(like my hand or board) under the sonar , just flying at the same
      place , could you tell me how to do althold with sonar , how to setting . 

    10. Alvin Singarimbun

      Thank you for your inspiration with low batt blinking led.
      Let me help you to show the link to your own post how to make blinking led
      when low batt condition:
      

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