Hello Guys,
I am currently helping a friend build a Voron 2.4 with a Duet3 6HC + 3HC expansion. We are running RRF 3.3.0.
The machine is mostly done, however we are fighting with the proper setup of the Z-Probe.
The issue is that we cannot get a good Z=0 datum after the start.g routine, we always have to baby-step -0.75mm in order to get to a nice first layer.
The start.g homes X and Y with their endstops, then homes Z with a Z-Probe in the center of the bed. Then we run a G32 that probes next to the four Z axes and aligns the printer gantry to the printbed (following this guide) . after that we do another homing run for Z to establish the right Z=0 datum.
The initial Idea was that we made a mistake when setting up the Z Probe height, so we went ahead and followed the "Test and calibrate a Z probe" guide to make sure our trigger height was set correct, which it was.
We then tried to play around a bit with this value and started to increase it, to trick the duet into coming closer to the true Z=0. Somehow it doesn't matter what we change this value to, it does not reflect to the machine, and I don't understand why.
Anyone has an idea where I am messing up?
config.g:
; Configuration file for Duet 3 (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.5 on Sun Nov 07 2021 21:03:00 GMT+0100 (Mitteleuropäische Normalzeit)
; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
;M550 P"Duet 3" ; set printer name
M669 K1 ; select CoreXY mode
; A0.0 U1.1
; 20/280 280/280
;
; B0.1 C0.2
; 20/20 280/20
;
; AAAAA FRONT AAAAA
; Drives
M569 P0.4 S0 ; physical drive 0.4 goes forwards B
M569 P0.3 S1 ; physical drive 0.3 goes forwards A
M569 P0.0 S1 ; physical drive 0.1 goes forwards Z1
M569 P0.1 S0 ; physical drive 0.1 goes forwards Z2
M569 P0.2 S1 ; physical drive 0.1 goes forwards Z3
M569 P1.1 S0 ; physical drive 0.1 goes forwards Z4
M569 P0.5 S0 ; physical drive 0.5 goes forwards E
M584 X0.3 Y0.4 Z0.0:0.1:0.2:1.1 E0.5 ; set drive mapping
M671 X20:20:280:280 Y250:00:00:250 S10
M350 X64 Y64 Z64 E64 I1 ; configure microstepping with interpolation
M92 X640.00 Y640.00 Z1200.00 E1746.16 ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X60000.00 Y60000.00 Z18000.00 E1200.00 ; set maximum speeds (mm/min)
M201 X6000.00 Y6000.00 Z4000.00 E250.00 ; set accelerations (mm/s^2)
M906 X1200 Y1200 Z1200 E400 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
; Axis Limits
M208 X0 Y0 Z-1 S1 ; set axis minima
M208 X300 Y300 Z250 S0 ; set axis maxima
; Endstops
M574 X2 S1 P"io8.in" ; configure switch-type (e.g. microswitch) endstop for high end on X via pin io8.in
M574 Y2 S1 P"io6.in" ; configure switch-type (e.g. microswitch) endstop for high end on Y via pin io6.in
M574 Z1 S2 ; configure Z-probe endstop for low end on Z
; Z-Probe
M558 P5 C"^io4.in" H5 F120 T12000 ; set Z probe type to switch and the dive height + speeds
G31 P500 X0 Y25 Z1.3 ; set Z probe trigger value, offset and trigger height(mehr Z=näher am Bett)
;M557 X15:250 Y15:250 S235 ; define mesh grid
; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" Q10 T0 ; create bed heater output on out0 and map it to sensor 0
M307 H0 B0 R0.603 C260.8 D1.69 S1.00 ;V24.3
M140 H0 ; map heated bed to heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M308 S1 P"temp1" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin temp1
M308 S1 H63 L-172 ; Thermistor Offset correction
M950 H1 C"out1" T1 ; create nozzle heater output on out1 and map it to sensor 1
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C
; Fans
M950 F0 C"out7" Q500 ; create fan 0 on pin out7 and set its frequency
M106 P0 C"HOTEND" S0 H1 T45 ; set fan 0 name and value. Thermostatic control is turned on
M950 F1 C"out8" Q500 ; create fan 1 on pin out8 and set its frequency
M106 P1 C"PARTS" S0 H-1 ; set fan 1 name and value. Thermostatic control is turned off
M950 F2 C"1.out6" Q500 ; create fan 2 on pin 1.out6 and set its frequency
M106 P2 C"CASE" S1 H-1 ; set fan 2 name and value. Thermostatic control is turned off
M950 F3 C"out9" Q500 ; create fan 3 on pin out9 and set its frequency
M106 P3 C"CASE" S1 H-1 ; set fan 3 name and value. Thermostatic control is turned off
; Tools
M563 P0 S"EXTRUDER" D0 H1 F0 ; 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
; Miscellaneous
T0 ; select first tool
bed.g:
; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v3.3.5 on Sun Nov 07 2021 21:03:00 GMT+0100 (Mitteleuropäische Normalzeit)
M561 ; clear any bed transform
G28 ; home all axes
; Probe the bed at 7 points
G91 ; relative positioning
G1 H2 Z3 F1200 ; lift Z relative to current position
G90 ; absoluet positioning
G30 P0 X20 Y250 H0 Z-99999
G91 ; relative positioning
G1 H2 Z3 F1200 ; lift Z relative to current position
G90 ; absoluet positioning
G30 P1 X20 Y0 H0 Z-99999
G91 ; relative positioning
G1 H2 Z3 F1200 ; lift Z relative to current position
G90 ; absoluet positioning
G30 P2 X280 Y0 H0 Z-99999
G91 ; relative positioning
G1 H2 Z3 F1200 ; lift Z relative to current position
G90 ; absoluet positioning
G30 P3 X280 Y250 H0 Z-99999 S4
homeall.g:
; homeall.g
; called to home all axes
;
; execute homex.g, then homey.g and last homez.g
G91 ; relative positioning
G1 H2 Z25 F1500 ; lift Z relative to current position
G90 ; absoluet positioning
M98 P"homex.g"
M98 P"homey.g"
M98 P"homez.g"
homex.g:
; homex.g
; called to home the X axis
;
G91 ; relative positioning
G1 H1 X305 F3500 ; move quickly to X axis endstop and stop there (first pass)
G1 X-5 F12000 ; go back a few mm
G1 H1 X305 F360 ; move slowly to X axis endstop once more (second pass)
G90 ; absolute positioning
homey.g:
; homey.g
; called to home the Y axis
;
G91 ; relative positioning
G1 H1 Y305 F3500; move quickly to Y axis endstop and stop there (first pass)
G1 Y-5 F12000 ; go back a few mm
G1 H1 Y305 F360 ; move slowly to Y axis endstop once more (second pass)
G90 ; absolute positioning
homez.g:
; homez.g
; called to home the Z axis
;
G90 ; absolute positioning
G1 X150 Y150 F12000 ; go to first probe point
M558 P5 C"^io4.in" F1500 T12000 ; set Z probe type to switch and the dive height + speeds
G30 ; home Z by probing the bed
M558 P5 C"^io4.in" F120 T12000 ; set Z probe type to switch and the dive height + speeds
G30
start.g:
M117 "start.g ausgefuehrt"
M564 S0 ; disable axis limits
G32
G28 Z ; home Z
M564 S1 ; enable axis limits
