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    Duet3 6HC RC-Servo on io port (What am I missing?)

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    • MaxGyverundefined
      MaxGyver
      last edited by MaxGyver

      Hey all,

      I would like to controll a RC-servo that is connected to the IO_0 port on my Duet3 6HC.

      The round Signal and 5V lines of the servo are connected to GND, io0.out and 5V_Ext of the io_0 port. But I have the impression that the servo has no power at all...

      in the config.g i have added the following code:

      M950 S0 C"io0.out"
      M280 P0 S0

      I am using RRF 3.2-beta1 with SBC

      What am I missing here ?

      Cheers Max

      droftartsundefined 2 Replies Last reply Reply Quote 0
      • droftartsundefined
        droftarts administrators @MaxGyver
        last edited by

        @MaxGyver Most servos need 5V PWM signal. I think io0.out is 3.3V. Why not use the dedicated 5V PWM output of out9?
        2eb760c4-15e8-49a9-80a0-34c2ed68bf3a-image.png

        Ian

        Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

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        • dc42undefined
          dc42 administrators
          last edited by

          Which firmware version are you using? Until recently, IO0 was only available for connecting a PanelDue.

          Duet WiFi hardware designer and firmware engineer
          Please do not ask me for Duet support via PM or email, use the forum
          http://www.escher3d.com, https://miscsolutions.wordpress.com

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          • droftartsundefined
            droftarts administrators @MaxGyver
            last edited by

            @MaxGyver Also, do you have a jumper on Internal 5V enable? See https://duet3d.dozuki.com/Wiki/Duet_3_Mainboard_6HC_Hardware_Overview#Section_5V

            Ian

            Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

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            • MaxGyverundefined
              MaxGyver
              last edited by

              @droftarts: I would like to use more than one Servo and I use the default jumper configuration with jumpers on the "Int 5V EN" and "5V -> SBC"

              alt text

              @dc42 I am using RRF version 3.2-beta1. I have also tried to connect to other IO-ports

              Thanks a lot!
              Max

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              • achrnundefined
                achrn
                last edited by

                https://duet3d.dozuki.com/Wiki/Duet_3_Mainboard_6HC_Hardware_Overview says io0 doesn't do PWM.

                4, 5 and 7 do PWM.

                droftartsundefined 1 Reply Last reply Reply Quote 2
                • droftartsundefined
                  droftarts administrators @achrn
                  last edited by

                  @achrn said in Duet3 6HC RC-Servo on io port (What am I missing?):

                  io0 doesn't do PWM.
                  4, 5 and 7 do PWM.

                  @MaxGyver That too!

                  Ian

                  Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

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                  • MaxGyverundefined
                    MaxGyver
                    last edited by MaxGyver

                    @achrn said in Duet3 6HC RC-Servo on io port (What am I missing?):

                    https://duet3d.dozuki.com/Wiki/Duet_3_Mainboard_6HC_Hardware_Overview says io0 doesn't do PWM.

                    4, 5 and 7 do PWM.

                    Yep! thats what I have missed!

                    Cheers,
                    Max

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