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    Y axis stutters while moving

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
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    • A Former User?
      A Former User
      last edited by

      I have been playing around trying to get each axis to home properly. I finally got the X axis working but the Y axis stutters while moving. I will try to attach a video. Any help or ideas would be greatly appreciated. Link to video is at the bottom.

      This is my homey.g file
      ; homey.g
      ; called to home the Y axis
      ;
      ; generated by RepRapFirmware Configuration Tool on Sat Dec 30 2017 19:42:42 GMT-0700 (Mountain Standard Time)
      G91 ; relative positioning
      G1 Z5 F6000 ; lift Z relative to current position
      G1 S1 Y-255 F1800 ; move quickly to Y axis endstop and stop there (first pass)
      G1 Y5 F1800 ; go back a few mm
      G1 S1 Y-255 F360 ; move slowly to Y axis endstop once more (second pass)
      G1 Z-5 F1800 ; lower Z again
      G90 ; absolute positioning

      and here is my homeall.g file

      ; Configuration file for Duet WiFi (firmware version 1.17)
      ; executed by the firmware on start-up
      ;
      ; generated by RepRapFirmware Configuration Tool on Sat Mar 04 2017 15:46:00 GMT+0100 (W. Europe Standard Time)

      ; General preferences
      M111 S0 ; Debugging off
      G21 ; Work in millimetres
      G90 ; Send absolute coordinates…
      M83 ; ...but relative extruder moves
      M555 P2 ; Set firmware compatibility to look like Marlin
      M208 X400 Y250 Z300 S0 ; Set axis maxima

      ; Endstops
      M574 X1 Y1 Z1 S0 ; Define active low and unused microswitches
      M558 P4 X0 Y0 Z1 H5 F100 T2000 ; Set Z probe type to modulated, the axes for which it is used and the probe + travel speeds
      G31 X-43 Y0 Z0 P50 ; Set Z probe trigger value, offset and trigger height
      ;Z-offset (Z0.9). Higher value LOWER nozzle height
      ; Lower value RAISE nozzle height

      M557 X15:400 Y15:250 S68 ; Define mesh grid
      M307 H3 A-1 C-1 D-1 ; disable heater 3, which makes it available for use to control the BLTouch

      ; Drives
      M584 X0 Y1 Z2 E3
      M569 P0 S1 ; Drive 0 goes forwards - X
      M569 P1 S1 ; Drive 1 goes backwards - Y
      M569 P2 S0 ; Drive 2 goes backwards - Z
      M569 P3 S0 ; Drive 3 goes forwards - Extruder

      M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation 16
      M92 X160 Y160 Z1600 E800 ; Set steps per mm 16
      M566 X600 Y600 Z12 E120 ; Set maximum instantaneous speed changes (mm/min) - (JERK)
      M203 X6000 Y6000 Z500 E400 ; Set maximum speeds (mm/min)
      M201 X1000 Y1000 Z1000 E250 ; Set accelerations (mm/s^2)
      M204 P1000 T1000 ; Set Max acceleration for P=printing moves and T=travel moves
      M906 X1600 Y1600 Z900 E1000 I30 ; Set motor currents (mA) and motor idle factor in per cent
      M84 S30 ; Set idle timeout

      ; Heaters
      M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
      M143 H0 S120 ; Set temperature limit for heater 0 to 120C
      M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
      M143 H1 S280 ; Set temperature limit for heater 1 to 280C

      ; Tools
      M563 P0 D0 H1 ; Define tool 0
      G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
      G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

      ; Network
      M550 PBlack Widow ; Set machine name
      M552 S1 ; Enable network
      M587 S"RCMP Surveillance" P"241428433" ; Configure access point. You can delete this line once connected
      M586 P0 S1 ; Enable HTTP
      M586 P1 S0 ; Disable FTP
      M586 P2 S0 ; Disable Telnet

      ; Fans
      M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
      M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
      M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

      ; Custom settings are not configured

      Here is the link for the video: https://youtu.be/r1LtBLIYYqg

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      • dc42undefined
        dc42 administrators
        last edited by

        Here are some likely causes:

        1. Mechanical issues. Does it always stutter at the same place? With power off, does the Y axis move smoothly if you move it by hand? (Don't move it quickly unless you disconnect the motor from the Duet first.) If you turn the motor spindle by hand, does the bed move easily?

        2. Intermittent connection to the Y motor.

        3. Faulty driver. If the E1 motor output is free, you can temporarily connect the Y motor to that and put M584 X0 Y4 Z2 E3 in config.g to reassign the driver. The M584 command must come before the M906 command and the M350 command if you have one.

        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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        • A Former User?
          A Former User
          last edited by

          @dc42:

          Here are some likely causes:

          1. Mechanical issues. Does it always stutter at the same place? It will shutter or stutter the entire length of the Y axis
          With power off, does the Y axis move smoothly if you move it by hand? (Don't move it quickly unless you disconnect the motor from the Duet first.) If you turn the motor spindle by hand, does the bed move easily?Yes it seems to move with no issue

          2. Intermittent connection to the Y motor.I have looked at the wiring and I dont see anything obvious as far as a loose connection

          3. Faulty driver. If the E1 motor output is free, you can temporarily connect the Y motor to that and put M584 X0 Y4 Z2 E3 in config.g to reassign the driver. The M584 command must come before the M906 command and the M350 command if you have one.I have tried this hooking it to the E1 location with the same issue, could it be a power issue. Not supplying that motor with enough juice?

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          • A Former User?
            A Former User
            last edited by

            Ok swapped wires from X axis to Y axis and problem moved with the wires so checked them all and of course one of my connections wasnt so good. Anyways X and Y work like a charm. Now when i try to home the Z axis I get this error:
            Error: Invalid servo index 5 in M280 command
            Error: Z probe already triggered at start of probing move

            Never mind got it figured out with the BL Touch

            BL touch goes through the testing part when I fire up the printer deploying and retracting the probe. Its way up off of the bed so it doesnt trigger to early. Not sure where to go from here.

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