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    Homing Failed but used to work just fine

    3D Printing General Chat
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    • Grace Dert
      Grace Dert last edited by

      Hello I have been printing on my FT5 for a while after I figured out how to home everything in the right direction. The printer was working perfectly then suddenly it starts throwing a G28 homing failure every time I try to home. i checked and double checked the wires and even rewired some of the pins but still getting this error. I am really confused I do not have a z probe but when i give the M119 it says that my z probe has not been triggered could that be the issue... I am really not sure any help is much appreciated
      Here is my config and homing files...
      ;;
      ;; Folgertech FT5 Configuration
      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 X0 Y0 Z0 S1 ; Set axis minima
      M208 X300 Y300 Z300 S0 ; Set axis maxima

      M574 X2 Y2 Z0 S0 ; Define active high microswitches

      M558 P0 X0 Y0 Z1 H3 F200 T5000 R0 ; smart IR Z probe, used for homing Z axis only, dive height 3mm, probe speed 200mm/min, travel speed 5000mm/min, no recovery time
      G31 P500 X11.0 Y0.5 Z1.65 ; set threshold and offsets

      M584 X0 Y1:4 Z2 E3 ; Map to specific drives

      M569 P0 S1 ; Drive 0 - X
      M569 P1 S1 ; Drive 1 - Y
      M569 P2 S0 ; Drive 2 - Z
      M569 P3 S0 ; Drive 3 - E0
      M569 P4 S1 ; Drive 4 - Y

      M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
      M92 X80 Y80 Z399 E492.45 ; Set steps per mm
      M566 X1200 Y1200 Z60 E120 ; Set maximum instantaneous speed changes (mm/min)
      M203 X8000 Y8000 Z600 E1200 ; Set maximum speeds (mm/min)
      M201 X1500 Y1500 Z500 E250 ; Set accelerations (mm/s^2)
      M906 X1000 Y1800 Z1000 E900 I30 ; Set motor currents (mA) and motor idle factor in per cent
      M84 S30 ; Set idle timeout

      M143 S260 ; Set maximum heater temperature to 260C
      M305 P0 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heated bed (Heater 0)
      M305 P1 T100000 B4388 C0 R4700 ; Set thermistor + ADC parameters for E0 (Heater 1)

      M307 H0 A281.7 C430.4 D4.4 B0 ; Bed PID
      M307 H1 A344.7 C122.8 D5.5 B0 ; Hotend PID
      M307 H3 A-1 C-1 D-1 ; BLTouch

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

      M550 PGraceFT5 ; Set machine name
      M552 P192.168.1.6 S1 ; Enable network and acquire dynamic address via DHCP

      M106 P0 S0 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
      M106 P1 S255 I0 F500 H1 T50 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
      M106 P2 S255 I0 F500 H1 T50 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

      T0 ; Select first tool

      Home x
      ; /sys/homex.g

      M402 ; make sure the probe is retracted

      G1 X300 F5000 S1 ; move quickly to X axis endstop and stop there (first pass)

      G91 ; relative moves
      G1 X-5 F6000 ; go back a 5mm
      G90 ; absolute moves
      M400 ; wait for the move to complete

      G1 X300 F360 S1 ; move slowly to X axis endstop once more (second pass)
      Home y
      ; /sys/homey.g

      M402 ; make sure the probe is retracted

      G1 Y300 F6000 S1 ; move quickly to Y axis endstop and stop there (first pass)

      G91 ; relative moves
      G1 Y-5 F6000 ; go back a 5mm
      G90 ; absolute moves
      M400 ; wait for the move to complete

      G1 Y300 F360 S1 ; move slowly to Y axis endstop once more (second pass)
      Home Z

      G1 Z-300 F5000 S1 ; move quickly to X axis endstop and stop there (first pass)

      G91 ; relative moves
      G1 Z5 F6000 ; go back a 5mm
      G90 ; absolute moves
      M400 ; wait for the move to complete

      G1 Z-300 F360 S1 ; move slowly to X axis endstop once more (second pass)

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      • Phaedrux
        Phaedrux Moderator last edited by Phaedrux

        Are you using a BLTouch or an IR sensor?

        M558 P0 X0 Y0 Z1 H3 F200 T5000 R0 ; smart IR Z probe,

        That would indicate IR probe.

        M307 H3 A-1 C-1 D-1 ; BLTouch
        M402 ; make sure the probe is retracted

        That would indicate BLTouch.

        Home Z G1 Z-300 F5000 S1 ; move quickly to X axis endstop and stop there (first pass)

        That would indicate an endstop switch.

        M574 X2 Y2 Z0 S0 ; Define active high microswitches

        Except that would indicate no Z endstop at all.

        I'm not sure how this ever worked.

        Z-Bot CoreXY Build | Thingiverse Profile

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