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Duet 3 Expansion 1HCL tacho reading

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  • undefined
    matej1006 @dc42
    last edited by 21 Jun 2023, 09:22

    @dc42 One other question please can i use this cabel for can-FD comm. J‑Y(ST)Y 2x2x0,8 I can't find any other cable in Slovenia.

    undefined 1 Reply Last reply 21 Jun 2023, 10:23 Reply Quote 0
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      oliof @matej1006
      last edited by oliof 21 Jun 2023, 10:23

      @matej1006 I am using random 0.15mm dia wires for CAN-FD comm, just twisting the wires. So 0.8mm dia should work fine. If you want to use the other two leads for power, 0.8mm is roughly ok for up to 6A, so should be fine as well.

      <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

      undefined 1 Reply Last reply 21 Jun 2023, 11:27 Reply Quote 0
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        matej1006 @oliof
        last edited by 21 Jun 2023, 11:27

        @oliof would lenght of 1.5m to 2m any problem to stable comm.

        undefined 1 Reply Last reply 21 Jun 2023, 11:29 Reply Quote 0
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          oliof @matej1006
          last edited by 21 Jun 2023, 11:29

          @matej1006 I ran up to a meter, but I don't think that 2m are a problem if you use shielded wires or twist them or add a ferrite bead to avoid noise.

          <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

          undefined 1 Reply Last reply 21 Jun 2023, 11:47 Reply Quote 0
          • undefined
            matej1006 @oliof
            last edited by 21 Jun 2023, 11:47

            @oliof i think that wires aren't twisted but whole cable is shielded with aluminium foil

            undefined 1 Reply Last reply 21 Jun 2023, 12:11 Reply Quote 1
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              dc42 administrators @matej1006
              last edited by dc42 21 Jun 2023, 12:11

              @matej1006 this would be better if you can find it https://www.thomann.de/gb/sommer_cable_quantum_highflex_multipair_2.htm. However, for a cable length of only 2m the type of cable is not critical.

              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

              undefined 1 Reply Last reply 18 Jul 2023, 20:08 Reply Quote 0
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                matej1006 @dc42
                last edited by 18 Jul 2023, 20:08

                @dc42 can I use OUT 0 and OUT 1 on tisti same board for PWM controlling my noctua fans and water pump. Will be same as fan pwm output?

                undefined 1 Reply Last reply 18 Jul 2023, 20:44 Reply Quote 0
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                  dc42 administrators @matej1006
                  last edited by dc42 18 Jul 2023, 20:44

                  @matej1006 yes you can, provided the current they require doesn't exceed the rating of the outputs. Check the water pump starting current in particular.

                  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

                  undefined 1 Reply Last reply 19 Jul 2023, 10:29 Reply Quote 0
                  • undefined
                    matej1006 @dc42
                    last edited by 19 Jul 2023, 10:29

                    @dc42 it is a 12V pc Water colling so i think it will be ok but i will check just to be sure about it

                    1 Reply Last reply Reply Quote 0
                    • undefined
                      matej1006 @dc42
                      last edited by 19 Jul 2023, 16:31

                      @dc42 if i connect 12v directly from power supply tacho won't work ?

                      undefined 1 Reply Last reply 22 Jul 2023, 21:07 Reply Quote 0
                      • undefined
                        dc42 administrators @matej1006
                        last edited by 22 Jul 2023, 21:07

                        @matej1006 tacho connections should still work of you connect the positive fan wire direct to +12V.

                        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

                        undefined 1 Reply Last reply 22 Jul 2023, 21:26 Reply Quote 0
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                          matej1006 @dc42
                          last edited by 22 Jul 2023, 21:26

                          @dc42SmartSelect_20230722_232217_Samsung Notes.jpg this is how have now connected all . And pump won't start! GND is commom

                          undefined 1 Reply Last reply 22 Jul 2023, 21:30 Reply Quote 0
                          • undefined
                            dc42 administrators @matej1006
                            last edited by 22 Jul 2023, 21:30

                            @matej1006 have you the specification of the pump?

                            You may need to invert the polarity of the out port in the M950 command, as you would for a PWM fan.

                            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

                            undefined 1 Reply Last reply 22 Jul 2023, 21:33 Reply Quote 0
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                              matej1006 @dc42
                              last edited by 22 Jul 2023, 21:33

                              @dc42 it is 12Vdc 17W pump which can be connected directly to pc Mother board
                              I did try to invert and pullup and nothing was different šŸ˜•

                              undefined 1 Reply Last reply 22 Jul 2023, 21:37 Reply Quote 0
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                                dc42 administrators @matej1006
                                last edited by 22 Jul 2023, 21:37

                                @matej1006 does the pump work if you disconnect the blue PWM wire?

                                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

                                undefined 1 Reply Last reply 22 Jul 2023, 21:43 Reply Quote 0
                                • undefined
                                  matej1006 @dc42
                                  last edited by 22 Jul 2023, 21:43

                                  @dc42

                                  ; Water colling PUMP
                                  M950 F2 C"!Fan0" Q25000 										; fan 2 is a 4-wire PWM fan so invert it, use high PWM frequency, tacho connected to PB6 on expansion connector
                                  M106 P2 H5 I1 T20:25 L255                                       ; set fan 2 value. Thermostatic control is turned on
                                  

                                  This is my code from duet2 eth board
                                  Now I have duet3 6hc
                                  I try same code and it wasn't work

                                  If I swap noctua fans with pump fans works on this output out6 pump on out5 is same nothing from her

                                  That I didn't try I Will tommorow

                                  1 Reply Last reply Reply Quote 0
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