two motor with different speed.

Posted by Ben on June 29, 2015 at 2:34am

hi everyone.

    i build a boat with two bushed motor and brushed ESC( V 2.4.9 firmware was used), when i begin to  push the throttle, one motor work(1),other do not work(3). when the throttle on 1/3 position, two motor both work.

    has anyone encountered this problem.

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Replies

    • Gordon Keller > Thomas J Coyle III June 30, 2015 at 1:42pm

      Hello Thomas,

      This webpage (http://rover.ardupilot.com/wiki/skid-steer-parameter-tuning/) seems to imply that the skid steering outputs are 1 and 3. I was a bit confused by your assertion that they are on 1 and 2, but I feel as though this might make sense for why my current project is producing erratic behavior...

      Would you mind distinguishing why this page and your answer differ? Am I interpreting something here incorrectly?

      Thanks so much,

      Gordon

    • Admin
      Thomas J Coyle III > Gordon Keller June 30, 2015 at 2:55pm

      @Gordon,

      If you are using a Pixhawk, the skid steering outputs might be on 1 and 2.

      The PWM channel sequence can be different whether you are using a Spektrum Remote receiver or a full up receiver with a PPM encoder with the Pixhawk.

      It is best to experiment with a receiver tester that can display channel PWM output.

      If you are using an APM they are 1 and 3 per David's observation.

      Regards,

      Tom C AVD

    • David Boulanger > Thomas J Coyle III June 29, 2015 at 6:37am

      Hi Tom,

      He references 1 and 3 in his post so I assumed it to be a APM. I think its 1 and 3 for an APM.  More information is needed at any rate for any help to be provided.

      Regards,

      David R. Boulanger

    • Admin
      Thomas J Coyle III > David Boulanger June 29, 2015 at 7:05am

      Hi David,

      Good point.

      Yes, definitely more input is required to help troubleshoot his issue.

      Regards,

      Tom C AVD

    • Ben > Thomas J Coyle III June 29, 2015 at 8:30am
      i am sorry，it is pixhawk，i will test tomorrow
      thanks！
    • Ben > Grant Morphett June 29, 2015 at 5:19am

      yes, i have 2 brushed ESCs

    • Darius Jack > Ben July 12, 2015 at 4:25pm

      Could 

      you kindly explain me the problem ?

      Emailed messages have no-reply status.

      Reply Deleted

      So how to reply anyway, is peer-to-peer communication not supported ?

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      Ben replied to their discussion "two motor with different speed." in ArduBoat User Group on DIY Drones

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      @Darius Jack My ultimate goal is to build

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  • Darius Jack June 29, 2015 at 3:17am

    Can you replace motor connectors to know if the problem is with a control unit or a motor, connector?

    Check voltage, current values.

This reply was deleted.