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    Homing advice

    Scheduled Pinned Locked Moved
    Tuning and tweaking
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    • Phaedruxundefined
      Phaedrux Moderator @agent0810
      last edited by

      @agent0810 said in Homing advice:

      X - 225.0, Y 225.0, Z - 300.00

      Are those negative values?

      Z-Bot CoreXY Build | Thingiverse Profile

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      • agent0810undefined
        agent0810
        last edited by

        no dashes,

        Status
        Printing
        Mode: FFF
        Tool Position
        X
        225.0
        Y
        225.0
        Z
        300.00

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        • Phaedruxundefined
          Phaedrux Moderator
          last edited by

          The last thing to check is that when you move to 0,0 it's at the corner of the bed. If it's not, then you'll have to adjust the M208 maxima values.

          Z-Bot CoreXY Build | Thingiverse Profile

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          • agent0810undefined
            agent0810
            last edited by

            so when i "home all" it sends it to the back right corner. when i got to 0,0 it goes to the front left corner. when i try to start a print, it starts in the back right corner, bangs against the stops then the bed starts to lower all the way.

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            • Phaedruxundefined
              Phaedrux Moderator
              last edited by

              What do you have in your start gcode?

              Z-Bot CoreXY Build | Thingiverse Profile

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              • agent0810undefined
                agent0810
                last edited by

                Here is the start:

                ;FLAVOR:Marlin
                ;TIME:336
                ;Filament used: 0.10025m
                ;Layer height: 0.2
                ;MINX:89
                ;MINY:95
                ;MINZ:0.2
                ;MAXX:131
                ;MAXY:125
                ;MAXZ:14.8
                ;Generated with Cura_SteamEngine 4.6.1
                M140 S60
                M105
                M190 S60
                M104 S230
                M105
                M109 S230
                M82 ;absolute extrusion mode
                M201 X500.00 Y500.00 Z100.00 E5000.00 ;Setup machine max acceleration
                M203 X500.00 Y500.00 Z10.00 E50.00 ;Setup machine max feedrate
                M204 P500.00 R1000.00 T500.00 ;Setup Print/Retract/Travel acceleration
                M205 X8.00 Y8.00 Z0.40 E5.00 ;Setup Jerk
                M220 S100 ;Reset Feedrate
                M221 S100 ;Reset Flowrate

                G28 ;Home

                G92 E0 ;Reset Extruder
                G1 Z2.0 F3000 ;Move Z Axis up
                G1 X10.1 Y20 Z0.28 F5000.0 ;Move to start position
                G1 X10.1 Y200.0 Z0.28 F1500.0 E15 ;Draw the first line
                G1 X10.4 Y200.0 Z0.28 F5000.0 ;Move to side a little
                G1 X10.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line
                G92 E0 ;Reset Extruder
                G1 Z2.0 F3000 ;Move Z Axis up

                G92 E0
                G92 E0
                G1 F5100 E-7
                ;LAYER_COUNT:86
                ;LAYER:0
                M107

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                • Phaedruxundefined
                  Phaedrux Moderator @agent0810
                  last edited by

                  @agent0810 said in Homing advice:

                  M201 X500.00 Y500.00 Z100.00 E5000.00 ;Setup machine max acceleration
                  M203 X500.00 Y500.00 Z10.00 E50.00 ;Setup machine max feedrate
                  M204 P500.00 R1000.00 T500.00 ;Setup Print/Retract/Travel acceleration
                  M205 X8.00 Y8.00 Z0.40 E5.00 ;Setup Jerk

                  Unrelated, but delete those lines from your slicer start gcode section in Cura.

                  I don't see a G90 in there to make sure you're in absolute positioning mode.

                  Does it do the prime line correctly or does it just start crashing?

                  Z-Bot CoreXY Build | Thingiverse Profile

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                  • agent0810undefined
                    agent0810
                    last edited by

                    just starts crashing.

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                    • agent0810undefined
                      agent0810
                      last edited by

                      Here are my machine settings in cura......do the print head settings look okay?

                      12f09a3e-7f69-4ab0-b374-74f55500407b-image.png

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                      • Phaedruxundefined
                        Phaedrux Moderator
                        last edited by

                        Change the Gcode flavor to RepRap.

                        Can you share an actual sliced gcode file?

                        Z-Bot CoreXY Build | Thingiverse Profile

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                        • agent0810undefined
                          agent0810
                          last edited by

                          yea let me see what i can get. should i just place G90 in before the G92? googled it and didnt see an actual setting for it in cura but someone said they just put it in the start code.

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                          • Phaedruxundefined
                            Phaedrux Moderator
                            last edited by

                            Well I'd like to see the full sliced gcode first to see what it's actually got inserted where.

                            Z-Bot CoreXY Build | Thingiverse Profile

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                            • agent0810undefined
                              agent0810
                              last edited by

                              I think this is what you are looking for.

                              base_x.gcode

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                              • Phaedruxundefined
                                Phaedrux Moderator
                                last edited by

                                Ok, try changing your start gcode to be

                                M220 S100 ;Reset Feedrate
                                M221 S100 ;Reset Flowrate
                                
                                G28 ;Home
                                G90 ; absolute positioning.
                                
                                G92 E0 ;Reset Extruder
                                G1 Z2.0 F3000 ;Move Z Axis up
                                G1 X10.1 Y20 Z0.28 F5000.0 ;Move to start position
                                G1 X10.1 Y200.0 Z0.28 F1500.0 E15 ;Draw the first line
                                G1 X10.4 Y200.0 Z0.28 F5000.0 ;Move to side a little
                                G1 X10.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line
                                G92 E0 ;Reset Extruder
                                G1 Z2.0 F3000 ;Move Z Axis up
                                
                                G92 E0
                                G92 E0
                                G1 F5100 E-7
                                

                                The other question I have is about your Z probe. Currently you are homing to the Z max position with an endstop. Do you also have a probe installed? Is your Z axis moving correctly?

                                Z-Bot CoreXY Build | Thingiverse Profile

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                                • agent0810undefined
                                  agent0810
                                  last edited by

                                  alright ill drop that in there, thank you.

                                  i have this probe that came yesterday i need to install, but i need to print a bracket to put it on before i can lol.

                                  https://www.filastruder.com/products/mini-differential-ir-height-sensor

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                                  • agent0810undefined
                                    agent0810
                                    last edited by

                                    So i think we have progress, no crashing before hand, but the bed goes half way down and then it starts to print but doesnt extrude any fillament.

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                                    • Phaedruxundefined
                                      Phaedrux Moderator
                                      last edited by

                                      That sounds like the Z steps per mm is incorrect.

                                      Try to measure how much it actually moves when you command it to move 10mm.

                                      I'm not sure off hand what the Ender 5 pro Z steps should be, but if you have lead screw and motor details it can be worked out.

                                      Z_steps_per_mm = (motor_steps_per_rev * driver_microstep) / screw_lead

                                      Z-Bot CoreXY Build | Thingiverse Profile

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                                      • agent0810undefined
                                        agent0810
                                        last edited by

                                        i raised it all the way, marked the back, lowered it 10mm then marked the back, lowered the bed out of the way and measured, looks like it only went about 4.5mm.

                                        Will the motor steps and driver info be online or on the device?

                                        thanks again for all your help on this.

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                                        • Phaedruxundefined
                                          Phaedrux Moderator
                                          last edited by

                                          Doing a Google it looks like it might be 800. Which kinda matches with what you've measured.

                                          Z-Bot CoreXY Build | Thingiverse Profile

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                                          • agent0810undefined
                                            agent0810
                                            last edited by

                                            so update that in the config.g?

                                            current:
                                            M92 X80.00 Y80.00 Z400.00 E93.00 ; set steps per mm

                                            change to:
                                            M92 X80.00 Y80.00 Z800.00 E93.00 ; set steps per mm

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