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Duet3D PCB delta printer effector sneak preview

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Smart effector for delta printers
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  • undefined
    inachisiojexus
    last edited by 30 May 2017, 08:05

    I'm also very interested in this as I may need to replace the somewhat bulky aluminum effector on my TEVO delta in order to fit a DyzEnd-X hotend. In the meantime I'm going for a hacky solution. 🙂

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    • undefined
      dc42 administrators
      last edited by 30 May 2017, 14:39

      Last week we agreed the new heatsink design with E3D. So production will start soon.

      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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      • ?
        A Former User
        last edited by 30 May 2017, 15:04

        Pre order any time soon?

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        • undefined
          Whitewolf
          last edited by 30 May 2017, 15:32

          @dc42:

          The PCB effector uses two connectors, one for signal wires and one for power wires. This is to reduce the risk of mis-wiring causing a short. A magnetic connector might work for the signal wires, but I doubt that it could be used for the power wires.

          still requires wire but here is an example of magnetic quick change tools with what appears to be USB for quick disconnect.

          http://flux3dp.com

          Exploring the universe wherever the tech blows

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          • undefined
            Whitewolf
            last edited by 30 May 2017, 15:35

            Phoenix Contact also makes some hybrid quick connect plugs and cables that run power and signal through a single cable

            Exploring the universe wherever the tech blows

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            • undefined
              dc42 administrators
              last edited by 30 May 2017, 16:28

              @Whitewolf:

              Phoenix Contact also makes some hybrid quick connect plugs and cables that run power and signal through a single cable

              Can you provide a link to the specific range of connectors?

              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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              • undefined
                Whitewolf
                last edited by 30 May 2017, 16:57

                @dc42:

                Can you provide a link to the specific range of connectors?

                https://www.phoenixcontact.com/online/portal/us?1dmy&urile=wcm:path:/usen/web/main/products/subcategory_pages/Hybrid_connectors_P-20-07-07/5a6e7875-620b-49aa-aad2-5cca1be81e12

                Exploring the universe wherever the tech blows

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                • undefined
                  Whitewolf
                  last edited by 30 May 2017, 17:11

                  the connectors are sold as just connector or connector with cable factory soldered in various lengths. I used some of their products on my CNC machine, top quality stuff allowing compact design.

                  Exploring the universe wherever the tech blows

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                  • undefined
                    Whitewolf
                    last edited by 30 May 2017, 17:17

                    They also work with different industries to make specialty terminal blocks and connectors. You might have some luck getting a hybrid connector made for 3d printers that uses the M8 profile if you do not need all the contacts that the M12 provides.

                    Exploring the universe wherever the tech blows

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                    • undefined
                      dc42 administrators
                      last edited by 30 May 2017, 17:26

                      Thanks. Those are nice looking connectors, but at more than £25 per pair, too expensive for us to consider using.

                      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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                      • undefined
                        Whitewolf
                        last edited by 30 May 2017, 17:36

                        @dc42:

                        Thanks. Those are nice looking connectors, but at more than £25 per pair, too expensive for us to consider using.

                        Always more than one way to skin a cat, I have not dug into any of these but it appears there are other options as well as some china knock off versions:

                        https://www.google.com/search?q=power+and+signal+cable+connectors+combination&client=safari&channel=iphone_bm&prmd=isvn&tbm=isch&tbo=u&source=univ&fir=aGCXvT9KytgLTM%253A%252C1RueKIH17FMnlM%252C_%253BMH4Q2os5un0Q4M%253A%252CX8DYikKozboJWM%252C_%253BP9bNreQSbdx6tM%253A%252CdEVZpbVkEvyLeM%252C_%253B7yhsBAv8gSkI-M%253A%252CYo0c6J3XmyN5kM%252C_%253BHo6HMWEtxXM84M%253A%252CYo0c6J3XmyN5kM%252C_%253BwSBv8FYC_hwHzM%253A%252C0822bA9po_LIOM%252C_%253BMmTncg7KEZrLRM%253A%252CJzgwlsC_AsbU1M%252C_%253BgmPBu-xsPnyQyM%253A%252CUUjgObmXNio_zM%252C_%253BACN_sCfquLrhwM%253A%252CkjO024cyXMP8GM%252C_%253Bfb97a8ynNtP9oM%253A%252CII9yHGby1R7gfM%252C_&usg=__zzkeWDuh-VOYuDOxIKq4bggKAKw%3D&sa=X&ved=0ahUKEwipyM7akpjUAhWhrFQKHQ5ADr4Q7AkIUw&biw=414&bih=628#imgrc=aGCXvT9KytgLTM:

                        Exploring the universe wherever the tech blows

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                        • undefined
                          Whitewolf
                          last edited by 30 May 2017, 17:37

                          @dc42:

                          Thanks. Those are nice looking connectors, but at more than £25 per pair, too expensive for us to consider using.

                          sorry bad link:
                          https://www.google.com/search?q=power+and+signal+cable+connectors+combination&client=safari&channel=iphone_bm&prmd=isvn&tbm=isch&tbo=u&source=univ&fir=aGCXvT9KytgLTM%253A%252C1RueKIH17FMnlM%252C_%253BMH4Q2os5un0Q4M%253A%252CX8DYikKozboJWM%252C_%253BP9bNreQSbdx6tM%253A%252CdEVZpbVkEvyLeM%252C_%253B7yhsBAv8gSkI-M%253A%252CYo0c6J3XmyN5kM%252C_%253BHo6HMWEtxXM84M%253A%252CYo0c6J3XmyN5kM%252C_%253BwSBv8FYC_hwHzM%253A%252C0822bA9po_LIOM%252C_%253BMmTncg7KEZrLRM%253A%252CJzgwlsC_AsbU1M%252C_%253BgmPBu-xsPnyQyM%253A%252CUUjgObmXNio_zM%252C_%253BACN_sCfquLrhwM%253A%252CkjO024cyXMP8GM%252C_%253Bfb97a8ynNtP9oM%253A%252CII9yHGby1R7gfM%252C_&usg=_zzkeWDuh-VOYuDOxIKq4bggKAKw%3D&sa=X&ved=0ahUKEwipyM7akpjUAhWhrFQKHQ5ADr4Q7AkIUw&biw=414&bih=628#imgrc=

                          Exploring the universe wherever the tech blows

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                          • undefined
                            Whitewolf
                            last edited by 30 May 2017, 17:46

                            Not sure on pricing but lumbergautomation (Belden) makes a similar plug as well

                            Exploring the universe wherever the tech blows

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                            • undefined
                              Dougal1957
                              last edited by 30 May 2017, 18:46

                              they are also very bulky for installing on a effector and I suspect have considerable more mass than a pair of Molex headers which are probably just as quick to disconnect!

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                              • ?
                                A Former User
                                last edited by 30 May 2017, 19:45

                                Cant you just use a suitable IDC connector for both signal and power

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                                • undefined
                                  elmoret
                                  last edited by 30 May 2017, 19:53

                                  IDC isn't suitable for hotends, as they can draw 3.3 amps, even 5 amps in the case of some 60 watt cartridges.

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                                  • ?
                                    A Former User
                                    last edited by 30 May 2017, 20:11

                                    @elmoret:

                                    IDC isn't suitable for hotends, as they can draw 3.3 amps, even 5 amps in the case of some 60 watt cartridges.

                                    I was thinking along the lines of doubling up spreading the load across the connectors, 24v on a 60 watt heater cartridge comes out at 2.5 amps so if you use for example
                                    16 way flat ribbon cable 28 AWG (7x36) Stranded 300V that should work.

                                    Just in the same way some are powering nema 17's with CAT5/6

                                    But hey I'm a Mech Eng not Electrical….

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                                    • undefined
                                      dc42 administrators
                                      last edited by 30 May 2017, 22:01

                                      Yes it's possible to use ribbon cable to carry power if you use enough conductors. My Ormerod 1 uses ribbon cable to power the 10A bed heater. I think it's a 40 way cable using 19 ways in each direction to carry the heater current and 2 for the thermistor. To connect a hot end this way, then in order to allow for using a 12V 50W heater plus fans etc. you would need about 28 conductors, making it quite a wide ribbon cable and difficult to wrap around a Bowden tube on a delta printer. A!so, you would want to have the Duet designed with a matching ribbon cable connector on it.

                                      For future intelligent hot end designs and Duets, I'm looking at using one RJ11 connector to carry the signals and a 2-pin power connector of some sort to carry 12V or 24V power. But for now the smart effector is designed to work with the current generation of Duet electronics (and perhaps other electronics too) so that is a not a possibility. On my own delta I plan to change the wiring to use two 8-core cables: one for the signals, and the other for the heater (using 2 pairs of conductors in parallel) and fans.

                                      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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                                      • ?
                                        A Former User
                                        last edited by 31 May 2017, 14:41

                                        @dc42:

                                        Yes it's possible to use ribbon cable to carry power if you use enough conductors. My Ormerod 1 uses ribbon cable to power the 10A bed heater. I think it's a 40 way cable using 19 ways in each direction to carry the heater current and 2 for the thermistor. To connect a hot end this way, then in order to allow for using a 12V 50W heater plus fans etc. you would need about 28 conductors, making it quite a wide ribbon cable and difficult to wrap around a Bowden tube on a delta printer. A!so, you would want to have the Duet designed with a matching ribbon cable connector on it.

                                        For future intelligent hot end designs and Duets, I'm looking at using one RJ11 connector to carry the signals and a 2-pin power connector of some sort to carry 12V or 24V power. But for now the smart effector is designed to work with the current generation of Duet electronics (and perhaps other electronics too) so that is a not a possibility. On my own delta I plan to change the wiring to use two 8-core cables: one for the signals, and the other for the heater (using 2 pairs of conductors in parallel) and fans.

                                        If you are going to dual 8 core (16 total) you could use the 4 twisted pair RJ45 plugs mated to PCB mounted 8 way RJ45 sockets and silicone 8 core wire should be flexible enough.

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                                        • undefined
                                          elmoret
                                          last edited by 31 May 2017, 15:22

                                          @CaLviNx:

                                          I was thinking along the lines of doubling up spreading the load across the connectors, 24v on a 60 watt heater cartridge comes out at 2.5 amps so if you use for example
                                          16 way flat ribbon cable 28 AWG (7x36) Stranded 300V that should work.

                                          Just in the same way some are powering nema 17's with CAT5/6

                                          But hey I'm a Mech Eng not Electrical….

                                          Doubling up pins is bad practice. There's no way to guarantee the load is shared evenly - if the resistance of one is a bit different, the load seeks the lower resistance path.

                                          Ask Rigidbot how it worked out to spread a load across multiple pins. Here's an example:

                                          https://plus.google.com/101640661041406923828/posts/SL7EXPS1Rro

                                          Molex MicroFit connectors are rated for 5 amps and would be a more suitable choice.

                                          Nema17 over Cat5/6 is reasonable, as they make RJ45 connectors rated at 1.5 amps which is typical for a stepper motor. The biggest issue using network cable on a stepper motor is the repeated flexing.

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