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    optical ABL for 6HC OPB 880T51

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    • rexxundefined
      rexx @A Former User
      last edited by

      @arnold_r_clark DSC_0732.JPG DSC_0733.JPG DSC_0731.JPG

      here is the abl i am using

      the bar on this ABL is hit with tabs deploying the pin another tab is hit to return the probe
      at the top you can see the pin to switch intersection is fixed an PCB OPTICAL will not fit this part unless i modifiy but not sure that is ideal the mounting is tiny tiny.... of course and would not fit unless i sepetate the pcb out board....hummmm

      thanks for your efforts

      Cheers

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      • rexxundefined
        rexx @A Former User
        last edited by

        @arnold_r_clark

        i just re read your post to "correlation" missed that part my bad i understand to implement this and i am good....

        question: does a 222 resistor and 101 come in an inline form how do you find the impedances to replicate or do you know what the values are for them OR do you think mounting this board remote is a better route

        either way i get the set up now after looking at the 4 wires switch to 3 wire outs but I only thought there was one resistor needed so that 90%

        thanks

        rexxundefined dc42undefined 2 Replies Last reply Reply Quote 0
        • rexxundefined
          rexx @rexx
          last edited by

          @rexx use a meter dummy....

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          • rexxundefined
            rexx @oliof
            last edited by

            @oliof

            under your deployprobe.g lines 4 and 11 have : full colon yet 8 does not what does this difference mean?

            if i set the reduce motor current for probing does it mean X30 y30 in the M906 means 30=300 mA each?
            i have 3 nema 23 and 1 nema 17 so i think i will start at 800mA for the 17 and 1800 mA for the 23... for normal current how does the current reduction work by % or individual axis current set points?

            DSC_0730.JPG

            here is the 2 wire optical for xy stops they trigger with no power and a contact multi-metre setting just fine could i possibly use them like a micro switch? IO in and ground

            they are hamlin 0404 (59085-040)

            also noticed i think but can you momentarily go outside my X stop to deploy or do i need to move the stop so its with in the stops to deploy?

            i am getting closer i can smell it and i haven't even plugged in yet 😉

            oliofundefined 1 Reply Last reply Reply Quote 0
            • oliofundefined
              oliof @rexx
              last edited by

              @rexx said in optical ABL for 6HC OPB 880T51:

              under your deployprobe.g lines 4 and 11 have : full colon yet 8 does not what does this difference mean?

              Lines 4 and 11 are M208 commands. I prefer the syntax variant where I set minima and maxima separated by a colon. Line 8 is a G0 command and the space in the example between Y and 220 is wrong. It should be G0 Y220.

              if i set the reduce motor current for probing does it mean X30 y30 in the M906 means 30=300 mA each?

              Good catch, that should have been M913. Sorry for this mistake! I will fix my mistakes now.

              i have 3 nema 23 and 1 nema 17 so i think i will start at 800mA for the 17 and 1800 mA for the 23... for normal current how does the current reduction work by % or individual axis current set points?

              With the M913 command as mentioned above.

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

              rexxundefined 2 Replies Last reply Reply Quote 0
              • rexxundefined
                rexx @oliof
                last edited by rexx

                @oliof

                so with M208 can i go outside the stops momentarily? like 10mm to deploy me ABL?
                or must i have the abl inside the stops?
                its a hit to deploy and stow and the stow is like 5-10mm past the stop but i could move the trigger tab to accommodate but don't want to if i dont need to.and can pass the stop slightly

                my home pos is on the back right
                my bed is 235x235x300
                is it typical to use 0 for home or better to use closest bed corner from home as 0?

                reason is my home pos to the start of the bed is a bit like x30y180 if 0 is home
                or am i better to use x-30y-180 for home
                or should i just use ocotoprint and forget all this and baby step the numbers that way??and record...
                i think my duet 2 is set home 0 bed +##
                just trying to get an insight on the best approach here

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                • rexxundefined
                  rexx @oliof
                  last edited by

                  @oliof no applozies needed

                  oliofundefined 1 Reply Last reply Reply Quote 0
                  • oliofundefined
                    oliof @rexx
                    last edited by

                    @rexx it depends where the endstops are and if you can physically pass them by. also depends on the length of you trigger leg if you actually need to pass them by. Without more detailed photos of your printer I'll probably give misleading answers.

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

                    rexxundefined 2 Replies Last reply Reply Quote 0
                    • rexxundefined
                      rexx @oliof
                      last edited by rexx

                      @oliof
                      good day,
                      the travel is there the oem setup allowed bump past the stop i have about an inch and only need .5" to tap the abl retract away but at the stop switch its not enough to complete the retract probe tap completely the printer was duel material and nozzzles and now only one so i have extra room

                      it also may make more simplicity to simply chop the trigger tab down .5" where any home would retract the probe if it was deployed when homing then i only need deploy.g i think...
                      and i would need to home in a way it goes to the back center (outside the bed) then x's homed as the tabs and slider are to be hit from the side to side not back to front

                      for deploy similar just the other sides tab but first must be somewhere in the middle of x then to the back not to catch on an angle but side to side for the ABL use only.

                      when just the x stop is hit can it go 13mm more in that direction being told in the code for only x stop?

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                      • rexxundefined
                        rexx @oliof
                        last edited by rexx

                        @oliof

                        i will snap a pic soon for you getting close with the wiring

                        for my abl optical switch if i use a 10k resistor across 5v and gnd guys said series resistor is that diffrent or just the way its wired?

                        are they directional a typical resistor?

                        sorry for all the school questions...

                        the head is back in the machine and its not gonna ever print single wall print with only supports at 2000% (the oem limitations no wall line counts 1 only no turning off supports N/A no raft N/A to revome either the sparse or 100% infil option only is pure sponcership)
                        now just dont crash it... stay tuned

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                        • rexxundefined
                          rexx
                          last edited by

                          @rexx said in optical ABL for 6HC OPB 880T51:

                          hamlin 0404 (59085-040)
                          hey good day
                          the two wire hamlin switchs are magnetic so A.picture is how they will go correct?
                          265167db-f965-4739-a1c0-acfa8501f176-image.png

                          does my opto 4 wire need to be wired like B pic or C picture for use as probe trigger

                          alankilianundefined 1 Reply Last reply Reply Quote 0
                          • alankilianundefined
                            alankilian @rexx
                            last edited by

                            @rexx The schematic in picture "B: is incorrect.

                            The pullup resistor should be between "+VCC" and "S signal" like it is in picture "C".

                            I don't understand your question about B vs. C so I can't help with that.

                            SeemeCNC Rostock Max V3 converted to V3.2 with a Duet2 Ethernet Firmware 3.2 and SE300

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                            • rexxundefined
                              rexx
                              last edited by

                              Optical switch :as for the resistor i have 180 ohm 2W resistors 330 ohm 1W resistors 10K 1/2W

                              i think i should use 5V side with 330 ohm /1w would this be fine?
                              do i need 2 or just one i have found two diffrent ways the PCB shows 2...

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                              • dc42undefined
                                dc42 administrators @rexx
                                last edited by dc42

                                @rexx said in optical ABL for 6HC OPB 880T51:

                                question: does a 222 resistor and 101 come in an inline form how do you find the impedances to replicate or do you know what the values are for them OR do you think mounting this board remote is a better route

                                Yes, 222 is a 2.2Kohm resistor and 101 is a 100 ohm resistor - except that it looks to me that the marking is actually 181 which makes it a 180 ohm resistor.

                                The 180 ohm resistor sets the current of the IR LED in the opto switch. The 2K2 resistor is a pullup resistor on the output. Its value is less critical, so your 10K resistor should work OK instead.

                                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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