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    Not using X0 Y0 for home

    Scheduled Pinned Locked Moved Solved
    Tuning and tweaking
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    • BlueDustundefined
      BlueDust @droftarts
      last edited by BlueDust

      @droftarts
      I already have the same settings as you... You just must be able to make them bend to your will better than I can...

      pause.g

      M83 ; relative extruder moves
      G1 E-10 F3600 ; retract 10mm of filament
      G91 ; relative positioning
      G1 Z5 F360 ; lift Z by 5mm
      G90 ; absolute positioning
      G1 X0 Y0 F6000 ; go to X=0 Y=0

      Fun, that 3 letter word with "u" in the middle.

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      • droftartsundefined
        droftarts administrators
        last edited by

        Can the X motor move at F6000 when the motor current has been dropped? Maybe put the motor current back to normal before doing this move.

        Is there a G28 in your resume.g? Mine (stock) doesn't have one:

        ; resume.g
        ; called before a print from SD card is resumed
        ;
        ; generated by RepRapFirmware Configuration Tool v2 on Thu Aug 15 2019 14:51:07 GMT+0100 (British Summer Time)
        G1 R1 X0 Y0 Z5 F6000 ; go to 5mm above position of the last print move
        G1 R1 X0 Y0          ; go back to the last print move
        M83                  ; relative extruder moves
        G1 E10 F3600         ; extrude 10mm of filament
        

        If you're printing and just want to pause the print, then resume, I don't see why it should need to home. If you're turning off the machine and saving position, then yes, you'll need to home after power on. On the whole, there is a problem using stall guard to home to an repeatable exact position, as it can be between 1 to 4 full motor steps out. See the wiki here for details, of which I'm sure you're well aware!

        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

        BlueDustundefined 2 Replies Last reply Reply Quote 0
        • BlueDustundefined
          BlueDust @droftarts
          last edited by

          @droftarts
          I was able to get everything working last night but didn't yet test the pause and how it reacts... I am in the middle of printing birthday gifts.... As I am not expecting it to be different with the current config, I set it to go back to X5 Y5, instead of X0 Y0 when paused. But as I said, printing.... I did this as my Magnetic monitor sensor keeps pausing the print for low filament movement randomly. And actually no idea why... When I check it it's always 97% to 103% and I have it's range 85 to 115%.... So after I resume it starts a bit off the print and that layer is a major weak point. With a bit of Force, maybe a single drop it breaks into two. It hasn't paused in the last two prints but just in case it does....

          Fun, that 3 letter word with "u" in the middle.

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          • BlueDustundefined
            BlueDust @droftarts
            last edited by

            @droftarts
            I have heard stall guard about it being off by said steps, but never had this problem until recent changes to my printer. The only one that could effect this is noticing the BLTouch mount was lose and screwing it down better... It's what was hitting the wall, making the x motor skip for stall guard to work. It's weird it worked better lose. The mount flexes every time it hits...

            Fun, that 3 letter word with "u" in the middle.

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            • droftartsundefined
              droftarts administrators
              last edited by

              Perhaps check how the magnetic monitor sensor is wired, might be picking up interference from stepper motors or other electronics? Shielded twisted pair wiring is probably safest for sensor wiring.

              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

              BlueDustundefined 1 Reply Last reply Reply Quote 0
              • BlueDustundefined
                BlueDust @droftarts
                last edited by

                @droftarts
                Talking about Interference, my PanelDue used to give me errors all the time. I even posted on this forum about it. But they stopped right after I installed the laser filament monitor. I forgot about it and never shared that odd piece of info...
                The cabling for the Magnet Monitor is as far as can be. Closest point is that the monitor needs to be close to the extruder to be accurate.

                Fun, that 3 letter word with "u" in the middle.

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                • Phaedruxundefined
                  Phaedrux Moderator
                  last edited by

                  Might be time to twist some cables.

                  Z-Bot CoreXY Build | Thingiverse Profile

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                  • BlueDustundefined
                    BlueDust
                    last edited by

                    Well... No idea. After pause it no longer gives me a slight offset (by going to location X5 Y5 and not rehoming). I didn't have this problem before the updates.... But it appears on resume it doesn't completely go back to the correct Z height and skips a few layers.
                    I am going to go back and re check all of the screws for the Z motors and make sure nothing is lose but thought I would ask in case someone has seen this before.

                    You can see the missing layer just above the rabbits tail.

                    IMG_20190925_215239~2.jpg

                    Thanks!

                    Fun, that 3 letter word with "u" in the middle.

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                    • BlueDustundefined
                      BlueDust
                      last edited by

                      Everything seems to be tight and I still seem to miss a layer or two after a pause.
                      IMG_20190928_230949~2.jpg

                      Fun, that 3 letter word with "u" in the middle.

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                      • BlueDustundefined
                        BlueDust
                        last edited by

                        The skipped lines was actually an empty nozzle.

                        On pause, the nozzle pulls back 10mm.

                        On resume, it pushes out 10mm.

                        The nozzle always extrudes a bit at the 10mm push... which means, when it gets back to to printing, the nozzle is empty.
                        I don't know why this was never an issue on resume before, but I ended up have it set the resume for 35 mm to ensure the nozzle will be full enough to properly extrude when it gets back to printing. That seems like alot, and odd I haven't noticed this issue before.
                        I did recently complete some upgrades. Upgraded to 3 Z motors to enable actual bed leveling, and swapped out the laser filament monitor for the magnetic one.

                        Fun, that 3 letter word with "u" in the middle.

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