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    Fly-super8 driver extension with BTT EXP-Mot V1.0

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    btt exp mot super8
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    • o_lampeundefined
      o_lampe @jay_s_uk
      last edited by o_lampe

      @jay_s_uk @jay_s_uk That helped recognizing the extra drivers.
      I coupled the extra driver with the V-axis (V4:8) and it followed like a puppy 😁

      Check out driver 4 and 8, there is a difference I can't evaluate:

      Driver 0: position -19800, 2209 standstill, reads 4591, writes 11, SG min/max not available
      Driver 1: position -19800, 2209 standstill, reads 4590, writes 11, SG min/max not available
      Driver 2: position 15920, 2209 standstill, reads 4590, writes 11, SG min/max not available
      Driver 3: position 19800, 2209 standstill, reads 4590, writes 11, SG min/max not available
      Driver 4: position 23800, 2209 standstill, reads 4586, writes 15, SG min/max 0/14
      Driver 5: position 0, 2209 standstill, reads 4590, writes 11, SG min/max not available
      Driver 6: position 0, 2209 standstill, reads 4590, writes 11, SG min/max not available
      Driver 7: position 0, 2209 standstill, reads 4590, writes 11, SG min/max not available
      Driver 8: position 0, 2209 standstill, reads 4586, writes 15, SG min/max 0/438
      Driver 9: position 0, no-driver-detected
      Driver 10: position 0, no-driver-detected
      
      gloomyandyundefined 1 Reply Last reply Reply Quote 1
      • gloomyandyundefined
        gloomyandy @o_lampe
        last edited by

        @o_lampe said in Fly-super8 driver extension with BTT EXP-Mot V1.0:

        Check out driver 4 and 8, there is a difference I can't evaluate:

        What is it you are concerned about?

        o_lampeundefined 1 Reply Last reply Reply Quote 0
        • o_lampeundefined
          o_lampe @gloomyandy
          last edited by

          @gloomyandy ..I just don't kknow what SG min/max stands for and if the difference is a problem

          gloomyandyundefined 1 Reply Last reply Reply Quote 0
          • gloomyandyundefined
            gloomyandy @o_lampe
            last edited by

            @o_lampe Those are the TMC stall guard readings and will be dependant upon things like motor configuration, motor loading and how the motor has been moved. Are your driver 4 and 8 motors identical from this point of view?

            o_lampeundefined 1 Reply Last reply Reply Quote 0
            • o_lampeundefined
              o_lampe @gloomyandy
              last edited by

              @gloomyandy Thank's for explaining.
              No the motors aren't identical, coupling drive 4 with the extra stepper was the fastest way to test it. It runs without anything attached.

              gloomyandyundefined 1 Reply Last reply Reply Quote 0
              • gloomyandyundefined
                gloomyandy @o_lampe
                last edited by

                @o_lampe I think that will explain the difference, but it is hard to be 100% sure!

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                • jtimonundefined
                  jtimon @o_lampe
                  last edited by

                  @o_lampe Sorry for replying to this old post. But I have an octopus pro (429, with RRF) and I was wordering if I could do this same thing with it. Does anybody in the thread know?
                  If not, could I expand it somehow else? could I, for example, use the CAN interface to connect it to duet expansion boards or would that not be compatible?
                  Could I connect several different boards to a raspberry and make them communicate that way, perhaps (I know this is possible in klipper, but not sure about RRF).
                  Sorry again, perhaps I should start a new thread.

                  https://github.com/jtimon/reprope

                  weed2allundefined jay_s_ukundefined 2 Replies Last reply Reply Quote 0
                  • weed2allundefined
                    weed2all @jtimon
                    last edited by weed2all

                    @jtimon as I know the only boards that uses CAN-FD compatible with duet boards are skr 3, skr 3 ez and fly super 8, I might be wrong but Jay know for sure!

                    https://www.thingiverse.com/weed2all/designs

                    1 Reply Last reply Reply Quote 2
                    • jay_s_ukundefined
                      jay_s_uk @jtimon
                      last edited by

                      @jtimon you can you the btt-exp-mot to add 3 more drivers if you aren't using EXP1 and EXP2.
                      As @weed2all said, there are currently only 3 STM boards that support CAN-FD.
                      And you are correct in that klipper can add multiple boards, RRF can't unless they're CAN-FD compatible

                      Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

                      jtimonundefined 1 Reply Last reply Reply Quote 2
                      • jtimonundefined
                        jtimon @jay_s_uk
                        last edited by

                        @jay_s_uk Thanks a lot.
                        Well, I was planning on using the EXP1 and EXP2 for a tft but if this is my only option for expansion, oh, well, I can use only the web interface, I guess, no big deal. Having an extra driver for the extruder is more important. Otherwise I could move to a 6 rope configuration from the current 8 rope configuration.
                        I would to CAD everything again, but I haven't started coding the new kynematics anyway.

                        Thanks again, I was asking on reddit but not getting many answers:

                        https://www.reddit.com/r/3Dprinting/comments/wubt9g/is_the_octopus_board_compatible_with_any/

                        https://www.reddit.com/r/BIGTREETECH/comments/wuysen/how_can_i_expand_an_octopus_pro_429/

                        https://github.com/jtimon/reprope

                        jay_s_ukundefined 1 Reply Last reply Reply Quote 0
                        • jay_s_ukundefined
                          jay_s_uk @jtimon
                          last edited by

                          @jtimon I don't look at Reddit much. For the STM port of RRF you're best seeking support on our discord server https://discord.gg/uS97Qs7
                          And you can still use a screen using UART assuming the screen supports it

                          Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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