UNSOLVED Delta FSR Auto Calib. Nozzle does not touch the bed.



  • Hello,

    I encountered calibration problems. Maybe there would be tips or suggestions on how to solve this.

    The problem is that after starting the calibration, The nozzle lowers and begins a 6-factor calibration, but the nozzle stops right at the sole or barely touches one without pressing it
    therefore, the FSR does not work.

    Sometimes when trying to calibrate, one other point is touched but not all points.

    I tried to increase H in M558. But it doesn’t work, just starts measuring the point at a greater distance

    The bottom line is that I can’t properly calibrate a cold printer. And since my printer chamber can be additionally heated up to 60 degrees the printer mechanics automatically deform slightly from the heat and calibration is required but then the nozzle, of all does not touch the bed.

    Shouldn't the z-axis run continuously down to the calibration point until the sensor is activated?
    Maybe I'll somehow miss it?

    Thanks for any explanation! If need more info just please ask.

    Config

    Configuration file for Duet WiFi (firmware version 2.03)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool v3.1.4 on Wed Aug 05 2020 15:32:12 GMT+0300 (Rytų Europos vasaros laikas)
    
    ; General preferences
    G90                                         ; send absolute coordinates...
    M83                                         ; ...but relative extruder moves
    M550 P"DT32"                                ; set printer name
    M665 R211.518 L401 B150 H516                ; 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
    M552 P0.0.0.0 S1                            ; enable network and acquire dynamic address via DHCP
    M586 P0 S1                                  ; enable HTTP
    M586 P1 S0                                  ; disable FTP
    M586 P2 S0                                  ; disable Telnet
    
    ; Drives
    M569 P0 S1                                  ; physical drive 0 goes forwards
    M569 P1 S1                                  ; physical drive 1 goes forwards
    M569 P2 S1                                  ; physical drive 2 goes forwards
    M569 P3 S0                                  ; physical drive 3 goes backwards
    M584 X0 Y1 Z2 E3                            ; set drive mapping
    M350 X128 Y128 Z128 E16 I0                  ; configure microstepping without interpolation
    M92 X640.00 Y640.00 Z640.00 E837.20         ; set steps per mm
    M566 X1200.00 Y1200.00 Z1200.00 E1200.00    ; set maximum instantaneous speed changes (mm/min)
    M203 X18000.00 Y18000.00 Z18000.00 E1200.00 ; set maximum speeds (mm/min)
    M201 X800.00 Y800.00 Z800.00 E1000.00       ; set accelerations (mm/s^2)
    M906 X600 Y600 Z600 E800 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 P4 H5 I1 F300 T3000                      ; set Z probe type to switch and the dive height + speeds
    G31 P500 X0 Y0 Z-0.15                         ; set Z probe trigger value, offset and trigger height
    M557 R80 S20                                  ; define mesh grid
    
    ; Heaters
    M305 P0 T100000 B4092 R4700                 ; set thermistor + ADC parameters for heater 0
    M143 H0 S120                                ; set temperature limit for heater 0 to 120C
    M305 P1 T100000 B4092 R4700                 ; set thermistor + ADC parameters for heater 1
    M143 H1 S300                                ; set temperature limit for heater 1 to 300C
    M305 P2 T100000 B4092 R4700                 ; set thermistor + ADC parameters for heater 2
    M143 H2 S60                                 ; set temperature limit for heater 2 to 60C
    
    ; Fans
    M106 P0 S0 I0 F1 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 S0 I0 F500 H-1                      ; set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off
    
    ; Tools
    M563 P0 D0 H1 F-1                           ; 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
    M563 P1 H2 F-1                              ; define tool 1
    G10 P1 X0 Y0 Z0                             ; set tool 1 axis offsets
    G10 P1 R0 S0                                ; set initial tool 1 active and standby temperatures to 0C
    
    ; Custom settings are not defined
    
    ; Miscellaneous
    M501                                        ; load saved parameters from non-volatile memory
    T0                                          ; select first tool
    G28
    

    Bed

    ; bed.g
    ; called to perform automatic delta calibration via G32
    ;
    ; generated by RepRapFirmware Configuration Tool v3.1.3 on Wed Jun 24 2020 11:55:33 GMT+0300 (Rytų Europos vasaros laikas)
    M561 ; clear any bed transform
    ; Probe the bed at 6 peripheral and 6 halfway points, and perform 6-factor auto compensation
    ; Before running this, you should have set up your Z-probe trigger height to suit your build, in the G31 command in config.g.
    G30 P0 X0 Y129.9 H0 Z-99999
    G30 P1 X112.5 Y64.95 H0 Z-99999
    G30 P2 X112.5 Y-64.95 H0 Z-99999
    G30 P3 X0 Y-129.9 H0 Z-99999
    G30 P4 X-112.5 Y-64.95 H0 Z-99999
    G30 P5 X-112.5 Y64.95 H0 Z-99999
    G30 P6 X0 Y64.9 H0 Z-99999
    G30 P7 X56.21 Y32.45 H0 Z-99999
    G30 P8 X56.21 Y-32.45 H0 Z-99999
    G30 P9 X0 Y-64.9 H0 Z-99999
    G30 P10 X-56.21 Y-32.45 H0 Z-99999
    G30 P11 X-56.21 Y32.45 H0 Z-99999
    G30 P12 X0 Y0 H0 Z-99999 S6
    ; Use S-1 for measurements only, without calculations. Use S4 for endstop heights and Z-height only. Use S6 for full 6 factors
    ; If your Z probe has significantly different trigger heights depending on XY position, adjust the H parameters in the G30 commands accordingly. The value of each H parameter should be (trigger height at that XY position) - (trigger height at centre of bed)
    
    


  • @Vyckaa said in Delta FSR Auto Calib. Nozzle does not touch the bed.:

    M208 Z0 S1

    Try Changing M208 Z0 S1 Change to M208 Z-0.2 S1
    Z0 is limiting the Z travel and your G31 states - trigger point


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