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  • Bernardo May 11, 2017 at 1:52pm

    :) no special name for the board. It is sold already together as one unit with the HC SR04.

    At the moment I saw on on EBay

    ----> http://www.ebay.com/itm/APM2-Ultrasonic-Module-HC-SR04-for-RC-APM-2...

    http://www.ebay.com/itm/APM2-Ultrasonic-Module-HC-SR04-for-RC-APM-2...

    here you have the two boards together an the 3 pin analogue signal for APM and Pixhawk ;)



    Angelica Crespo said:


    Thank you so much, Bernardo! May I know the name of the additional board attached to the Sonar? What is it called?


    Bernardo said:

    Hi Angelica,

    the APM, Pixhawk, Pixhack, CUAV and similar FC from this series needs a special signal that is provided through

    a small additional board attached to the Sonar you have.

    It is available from RC stores, China suppliers and from EBay as a set..

    Please see the attached images.

  • Angelica Crespo May 11, 2017 at 1:40am


    Thank you so much, Bernardo! May I know the name of the additional board attached to the Sonar? What is it called?


    Bernardo said:

    Hi Angelica,

    the APM, Pixhawk, Pixhack, CUAV and similar FC from this series needs a special signal that is provided through

    a small additional board attached to the Sonar you have.

    It is available from RC stores, China suppliers and from EBay as a set..

    Please see the attached images.

  • Bernardo May 9, 2017 at 1:58am

    ..........more pics:  hope this helps a little :)

    R0019301.JPG

    sonar ww.jpg

  • Bernardo May 9, 2017 at 1:56am

    Hi Angelica,

    the APM, Pixhawk, Pixhack, CUAV and similar FC from this series needs a special signal that is provided through

    a small additional board attached to the Sonar you have.

    It is available from RC stores, China suppliers and from EBay as a set..

    Please see the attached images.

    R0019295.JPG

    R0019296.JPG

    R0019297.JPG

  • Angelica Crespo May 8, 2017 at 9:36pm

    Hi Bernardo, I'm using the same sonar sensor, HC-SR04. However, it has 4 pins: Supply, Trigger, Echo, Gnd. You mentioned that you used the sonar with the second board attached where 3 pins come out. May I know the details about this second board? I can't seem to make the 4-pin sensor work with Pixhawk. Any suggestions? Thanks!
    Bernardo said:

    Hi :)
    cool that the sonar works on APM.
    What is the A1 pin for the Pixhawk??
    I'm reading through the WiKi but there is no mention how to connect the HC-SRo4 to the Pixhawk.
    I use the sonar with the second board attached where 3 pins come out.
    The sonar shows a red led but no numbers in MP. I connect to the ADC 3.3 V plug in the middle.
    Is that ok?
  • Connor Schwieso December 21, 2016 at 2:34pm

    trying the same with hcsr04 and apm 2.52 is there a known work around yet? any advice on how to hook up the 4 pin sensor would be greatly appreciated

  • Niti Rohilla November 17, 2016 at 9:49pm

    Hi Bernardo,

    I also want to connect HC_SR04 with Pixhawk.
    The HC-SR04 that I have has 4 pins : 5V Supply, Trigger pulse Input, Echo pulse output, Ground.
    Can you please help me understand how I can connect this with pixhawk?
    Did you make any changes in ardupilot or HC_SR04 driver's code also to make it work?

  • Bernardo June 24, 2016 at 1:25am

    Hi :)

    ok, today i can inform that the module works now!

    Pin 14 did it.

    Many thanks to Juan - you lead me to success :D

    (YAY!!! ) :D

  • Bernardo June 2, 2016 at 12:35pm
    sorry - I have trouble connecting to this forum, veeeeery slow and the html mode (menue does not show up) and also the upload-browse option is not there (pics) ?????

    It's only me ?
    • Bernardo > Bernardo June 3, 2016 at 2:30am

      today it's normal again ,  quick connection to the DIY forum :)  - perhaps issues in DE 'cause of the rainstorms .....

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