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Not homing in correct direction.

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  • undefined
    Phaedrux Moderator @fcwilt
    last edited by 24 Jan 2021, 20:29

    @fcwilt said in Not homing in correct direction.:

    Y+ is to the back

    I guess we should be specific about what is moving where. On a cartesian it can be confusing, because the bed moves back, but the nozzle is moving to the front.

    Z-Bot CoreXY Build | Thingiverse Profile

    undefined 1 Reply Last reply 24 Jan 2021, 20:37 Reply Quote 1
    • undefined
      fcwilt @Phaedrux
      last edited by 24 Jan 2021, 20:37

      @Phaedrux said in Not homing in correct direction.:

      I guess we should be specific about what is moving where. On a cartesian it can be confusing, because the bed moves back, but the nozzle is moving to the front.

      I didn't consider the OP might have a bed slinger - my bad.

      So where is X0 Y0 on one of those?

      Frederick

      Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

      undefined 1 Reply Last reply 24 Jan 2021, 20:38 Reply Quote 1
      • undefined
        Phaedrux Moderator @fcwilt
        last edited by 24 Jan 2021, 20:38

        @fcwilt Same place. You're right though. -Y should move the nozzle to the front.

        Z-Bot CoreXY Build | Thingiverse Profile

        1 Reply Last reply Reply Quote 1
        • undefined
          BattleDroid
          last edited by 24 Jan 2021, 20:41

          Thank you for your quick responses. Sorry if I sound daft. When you say high end low end. Example being on my gantry x axis moves left to the (-) end. That would be the low end correct?

          So That being said my endstops are on the low end on both my x and y. And i should change (m574 X2) to (m574 X1). Correct?

          Then in my home (all)(x)(y) config change the positive values to negative values. Which should change the direction?

          Also a few more responses since Ive been typing. Cant keep up. Sorry.

          To confirm in my head believe I have the closest left of the bed is my zero. Thats how it was before, and thats how my reprap prusa is as well. So when they home normally the gantry goes left, bed goes back, and then normally the nozzle would zero on a sensor. But this time around im hoping to get the bl touch working. And use that with this printer.

          undefined 1 Reply Last reply 24 Jan 2021, 20:54 Reply Quote 0
          • undefined
            fcwilt @BattleDroid
            last edited by 24 Jan 2021, 20:54

            @BattleDroid said in Not homing in correct direction.:

            When you say high end low end.

            Consider an axis with min position of 0 and max position of 300. Low end is the 0 end, high end is the 300 end.

            So That being said my endstops are on the low end on both my x and y. And i should change (m574 X2) to (m574 X1). Correct?

            Yes

            Then in my home (all)(x)(y) config change the positive values to negative values. Which should change the direction?

            Homing is toward the end stop. If they are at the low end the G1 H1 moves will have negative values, the G1 move will have a positive value.

            Frederick

            Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

            1 Reply Last reply Reply Quote 1
            • undefined
              BattleDroid
              last edited by 24 Jan 2021, 21:08

              Thank you for confirming. So I changed the high end low end. And set the values to negative. And I cant believe it was that much of a hassle for me for that easy of a fix. I believe I have changed those values before but most likely not both together. Which now kinda makes sense why I was getting the endstop errors. But now I kind of have a better understanding of that. Thank you guys. It is now homing correctly. I will now move on to see if I can get the bl touch to work correctly, that I am also fishing in the dark with.

              But as for my other problem. I sent M303 H0 S60. It is now tuning the bed. After it tunes (its been going for about 5-10 mins now) assuming it is good I am to Send M500 to save. Then what is M501? Just to load those parameters when it goes to heat up? Also where at the end of my config should I add M501? Just right at the end?

              Also what is a bed slinger? lol

              undefined 1 Reply Last reply 24 Jan 2021, 21:44 Reply Quote 0
              • undefined
                fcwilt @BattleDroid
                last edited by 24 Jan 2021, 21:44

                @BattleDroid said in Not homing in correct direction.:

                Then what is M501? Just to load those parameters when it goes to heat up? Also where at the end of my config should I add M501? Just right at the end?

                M500 creates (or updates) a file config-override.g and in that file are certain commands. Among them are the commands that reflect the results of the heater tuning operation(s).

                M501 goes at the very end of your config.g file. In essence it causes the config-override.g file to be treated as a continuation of config.g, thus executing the commands that are in config-override.g.

                Now you don't have to use M501 - you can - if you wish - simply copy the contents of config-override.g into your config.g file at the appropriate locations.

                Also what is a bed slinger? lol

                It's the type of printer that moves the bed back and forth along the Y axis and moves the X gantry up and down along the Z axis.

                There are many others types.

                Frederick

                Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                undefined 1 Reply Last reply 24 Jan 2021, 22:04 Reply Quote 1
                • undefined
                  BattleDroid @fcwilt
                  last edited by 24 Jan 2021, 22:04

                  @fcwilt

                  Ah, gotcha. That makes sense now. Thank you. You guys have been super helpful. I just closed about 30 tabs since those questions have been solved for me. haha

                  I am now trying to see if I can get the probe to work. I am googling how to change the mesh grid(?) when it probes. I noticed when it first tried to probe it wasn't quite on the bed. I am assuming its coordinates on the m557 line. Still searching. The other thing I have to find is why it doesn't deploy the probe when it starts homing. It is lit up, it will kick in and out when I turn the printer on. But I need to find what I change to make it deploy when it goes to home.

                  undefined undefined 2 Replies Last reply 24 Jan 2021, 22:09 Reply Quote 1
                  • undefined
                    Blacksheep99 @BattleDroid
                    last edited by 24 Jan 2021, 22:09

                    @BattleDroid said in Not homing in correct direction.:

                    @fcwilt

                    Ah, gotcha. That makes sense now. Thank you. You guys have been super helpful. I just closed about 30 tabs since those questions have been solved for me. haha

                    I am now trying to see if I can get the probe to work. I am googling how to change the mesh grid(?) when it probes. I noticed when it first tried to probe it wasn't quite on the bed. I am assuming its coordinates on the m557 line. Still searching. The other thing I have to find is why it doesn't deploy the probe when it starts homing. It is lit up, it will kick in and out when I turn the printer on. But I need to find what I change to make it deploy when it goes to home.

                    Do you have a deploy probe and retract probe script? M401 should deploy it and M402 retract. I was in a very similar position to you just the other week so this is all very fresh and familiar for me! 😄

                    undefined 1 Reply Last reply 24 Jan 2021, 22:12 Reply Quote 1
                    • undefined
                      BattleDroid @Blacksheep99
                      last edited by 24 Jan 2021, 22:12

                      @Blacksheep99

                      I cant say if I do or not. I did try the M401 and M402 commands which didn't seem to do anything. So I assume not? I will try to look into this more.

                      1 Reply Last reply Reply Quote 0
                      • undefined
                        Phaedrux Moderator @BattleDroid
                        last edited by 24 Jan 2021, 22:12

                        @BattleDroid said in Not homing in correct direction.:

                        M558 P1 C"zprobe.in+zprobe.mod" H5 F120 T6000

                        If you're using a BLTouch this line is not correct.

                        Instead you would need

                        ; Z-Probe BLtouch
                        M950 S0 C"PINNAME" ; create servo pin 0 for BLTouch
                        M558 P9 C"^zprobe.in" H5 F200 T6000 ; set Z probe type to bltouch and the dive height + speeds

                        The PINNAME part would be the name of the pin you are using for the servo connection. Usually heater pin 3 or 7 on the expansion header. Which are you using?

                        exp.heater3 for example

                        Then you would need 2 macro files in /sys folder called deployprobe.g and retractprobe.g

                        They would contain the servo commands to deploy and retract the pin.

                        M280 P0 S10 ; deploy BLTouch

                        M280 P0 S90 ; retract BLTouch

                        Then when you send M401 or M402 the pin should deploy and retract if it's working correctly.

                        Then to probe Z you'd need to have a G30 at the center of your bed to use the probe to set Z0. Post your homeall if you're unsure.

                        Z-Bot CoreXY Build | Thingiverse Profile

                        undefined 1 Reply Last reply 24 Jan 2021, 22:15 Reply Quote 2
                        • undefined
                          fcwilt @BattleDroid
                          last edited by fcwilt 24 Jan 2021, 22:14

                          *** deleted ***

                          Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                          1 Reply Last reply Reply Quote 0
                          • undefined
                            BattleDroid @Phaedrux
                            last edited by 24 Jan 2021, 22:15

                            @Phaedrux
                            Sorry thats alot to take in at once. I appologize for being slow. I am using heater pin 3.

                            Here is my homeall while I re read that again.

                            ; homeall.g
                            ; called to home all axes
                            ;
                            ; generated by RepRapFirmware Configuration Tool v3.2.2 on Sat Jan 23 2021 15:36:11 GMT-0600 (Central Standard Time)
                            G91 ; relative positioning
                            G1 H2 Z5 F6000 ; lift Z relative to current position
                            G1 H1 X-375 Y-255 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
                            G1 H2 X-5 Y-5 F6000 ; go back a few mm
                            G1 H1 X-375 Y-255 F360 ; move slowly to X and Y axis endstops once more (second pass)
                            G90 ; absolute positioning
                            G1 X15 Y15 F6000 ; go to first bed probe point and home Z
                            G30 ; home Z by probing the bed

                            ; Uncomment the following lines to lift Z after probing
                            ;G91 ; relative positioning
                            ;G1 Z5 F100 ; lift Z relative to current position
                            ;G90 ; absolute positioning

                            undefined 1 Reply Last reply 24 Jan 2021, 22:16 Reply Quote 0
                            • undefined
                              Phaedrux Moderator @BattleDroid
                              last edited by 24 Jan 2021, 22:16

                              @BattleDroid said in Not homing in correct direction.:

                              G1 X15 Y15 F6000 ; go to first bed probe point and home Z
                              G30 ; home Z by probing the bed

                              The homeall is correct, but you should change the X15 Y15 to be a position that places the probe at the center of the bed.

                              Z-Bot CoreXY Build | Thingiverse Profile

                              undefined 1 Reply Last reply 24 Jan 2021, 22:19 Reply Quote 2
                              • undefined
                                BattleDroid @Phaedrux
                                last edited by 24 Jan 2021, 22:19

                                @Phaedrux

                                Ok i will change that.

                                Does this seem more correct now in my config?

                                ; Z-Probe BLtouch
                                M950 S0 C"heater3" ;create servo pin 0 for BLTouch
                                M558 P9 C"^zprobe.in" H5 F200 T6000 ; set Z probe type to bltouch and the dive height + speeds
                                G31 P500 X0 Y0 Z2 ; set Z probe trigger value, offset and trigger height
                                M557 X15:215 Y45:195 S20 ; define mesh grid

                                undefined 1 Reply Last reply 24 Jan 2021, 22:23 Reply Quote 0
                                • undefined
                                  BattleDroid
                                  last edited by BattleDroid 24 Jan 2021, 22:20

                                  Also I was messing around with the mesh settings there on the x andy, im changing them more to the center right now.

                                  Edit i think i just realized thats describing the dimensions of where i can probe.

                                  1 Reply Last reply Reply Quote 0
                                  • undefined
                                    Phaedrux Moderator @BattleDroid
                                    last edited by 24 Jan 2021, 22:23

                                    @BattleDroid said in Not homing in correct direction.:

                                    M950 S0 C"heater3" ;create servo pin 0 for BLTouch

                                    Almost. the pin name is exp.heater3

                                    Also don't forget to set the XYZ offset of the probe from the nozzle in G31

                                    G31 P500 X0 Y0 Z2 ; set Z probe trigger value, offset and trigger height

                                    https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe

                                    Z-Bot CoreXY Build | Thingiverse Profile

                                    undefined 1 Reply Last reply 24 Jan 2021, 22:36 Reply Quote 1
                                    • undefined
                                      BattleDroid @Phaedrux
                                      last edited by BattleDroid 24 Jan 2021, 22:36

                                      @Phaedrux

                                      Ok, in relation to that. Do I use how far the probe is from the nozzle? or Nozzle from the probe?
                                      Example: I used
                                      G31 P500 X24.1 Y21.4 Z-4.5 ; set Z probe trigger value, offset and trigger height. The probe being closer to the front of the nozzle(+), and to the right (+).

                                      Edit, I just seen the link you added after I replied, reading through that now.

                                      1 Reply Last reply Reply Quote 0
                                      • undefined
                                        BattleDroid
                                        last edited by 24 Jan 2021, 23:24

                                        Ok reading that, and going back a bit here. Before I can test and calibrate I believe I need to get the probe to retract properly first. I do have both of those macro files in /sys. When I send m401 and m402 nothing seems to happen. Same if I send M280 P0 S10. When I first supply power to the board turning the printer on the probe will deploy and retract twice.
                                        I read through the BLtouch wiki a couple times now, but I believe we covered most of that here already, the labeling for the BLtouch and whatnot. I'm not sure where to look next. Aside from my probe in/out files. Do I need an additional m280 code in the config.g file?

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                                        • undefined
                                          fcwilt
                                          last edited by 24 Jan 2021, 23:33

                                          Hi,

                                          Are you connecting the BLTouch to the 50 pin expansion connector on the Duet 2 or to a Duex 2/5 board?

                                          Frederick

                                          Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                                          undefined 1 Reply Last reply 24 Jan 2021, 23:39 Reply Quote 1
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