Hotend crashing into bed again

  • It's been a few months since we used the printer. Not sure what is happening.

    Firmware 1.21 w/ IR probe

    I've gone through the IR calibration. Heated everything up, brought the hot end down until it just grabs a piece of paper- set the Z height G92 Z0, then backed off 5mm and probed with G30 S-1 at entered that in the config file.

    I have measured and remeasure the home height, even used the control panel to raise the hotend until it touched the stops to confirm my measurement.

    Anyway, even after all that is done, if I manually bring the hotend back down until it just grabs the paper again, the Z height reads at around 85mm.

    I just don't see what I'm missing.

    Rockstock max V2

    ; Configuration file for Duet WiFi (firmware version 1.17 to 1.19)
    ; executed by the firmware on start-up
    ; generated by RepRapFirmware Configuration Tool on Tue Oct 16 2018 21:59:26 GMT-0400 (Eastern Daylight Time)

    ; General preferences
    G90 ; Send absolute coordinates...
    M83 ; ...but relative extruder moves
    M555 P1 ; Set firmware compatibility to look like RepRapFirmare

    ;*** The homed height is deliberately set too high in the following - you will adjust it during calibration.
    M665 R120 L269 B120 H372.83 ; Set delta radius, diagonal rod length, printable radius and homed height
    M666 X0 Y0 Z0 ; Put your endstop adjustments here, or let auto calibration find them

    ; Network
    M550 Duet ; Set machine name
    M552 S1 ; Enable network
    M586 P0 S1 ; Enable HTTP
    M586 P1 S0 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; Drives
    M569 P0 S1 ; X Tower Drive 0 goes forwards
    M569 P1 S0 ; Y Tower Drive 1 goes backwards
    M569 P2 S1 ; Z Tower Drive 2 goes forwards
    M569 P3 S1 ; Extruder 1 Drive 3 goes forwards
    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X106.667 Y106.667 Z106.667 E94.023 ; Set steps per mm

    M566 X72000 Y72000 Z72000 E1200 ; Set maximum instantaneous speed changes (mm/min)
    M203 X1200000 Y1200000 Z1200000 E3600 ; Set maximum speeds (mm/min)
    M201 X1000 Y1000 Z1000 E1000 ; Set accelerations (mm/s^2)
    M906 X1000 Y1000 Z1000 E500 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    ; Axis Limits
    M208 Z0 S1 ; Set minimum Z

    ; Endstops
    M574 X2 Y2 Z2 S1 ; Set active high endstops

    ; Z-Probe
    M558 P1 X0 Y0 Z0 H25 F120 T6000 ; Set Z probe type to modulated, the axes for which it is used and the dive height + speeds
    G31 P500 X0 Y0 Z1.71 ; Set Z probe trigger value, offset and trigger height
    M557 R145 S20 ; Define mesh

    ; Heaters
    M305 P0 T100000 B4338 C0 R4700 ; Set thermistor + ADC parameters for heater 0
    M143 H0 S110 ; Set temperature limit for heater 0 to 110C
    M305 P1 X200 ; Configure thermocouple for heater 1
    M143 H1 S280 ; Set temperature limit for heater 1 to 280C

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

    ; 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
    ; Custom settings are not configured

  • I'm not a delta user but maybe this could help guide you.

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