Replies

  • Hameedullah Omari February 2, 2015 at 12:24pm

    Hello sir, if u kindly send me your codes and design of attaching this sensors coz i am working in such project too.

  • Jasper Pons January 22, 2015 at 11:06pm

    Hey Dan, we followed the same approach , controlling the drone using sum ppm signals.

    Love your sensor array! Do you not find that the sonar's interfere with each other and only one can be ranged at any one time? We automatically range our sonars one after the other and found that at 4m the ping time is about 50ms which can slow down everything quite a lot.

    We also found that with all of the propwash and frame noise, the maxbotic sonar sensor rated at 7m is only effective up to about 2m . did you find the same?

    • Dan Neault > Jasper Pons January 23, 2015 at 4:02am

      You can pulse more then one (we pulsed 4), and prop wash given the above example was no issue.

      However the program that managed noise vs true signal, with PWM control, and comm's, went beyond a Arduino. We use a Windows CE board now, because it is easy to program, stupid fast, and I don't need to look at Linux doc's for a week just to do something simple :)

      Sonic is a good start, but it has limits. We used TOF camera's now, much like what Intel made public recently, only ours is a real product, not just a demo.

  • Chris March 14, 2013 at 8:22pm

    I am currently working on this. First implementation for 4 sensors(front,back,right,left) is done, hardware is set up. I am right now looking for a safe way of testing this (At the moment I am trying to get a simulation working), because I am afraid of testing in RL with my copter...

  • Joel March 14, 2013 at 3:40am

    I would love to get this working.

    That said, I would really love to get it working using video. Maybe OpenCV? But, I am sure Sonar would work just fine, I'm just personally interested in computer vision and analyzing live video on the fly.

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