help with g32 and bed leveling
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Hi everyone, I have 3 z axis (Front left, centre rear, front right) setup with independent levelling and a BL touch setup on the tool board which is all working OK. The problem is when it does the compensation for the auto bed levelling I can see that it's not adjusting in correctly, it's putting it too close to the hot end. It's probably something I've not setup correctly, so any help would be great.
Thanksconfig.g
; Configuration file for Duet 3 (firmware version 3.3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.3.10 on Sat Jan 22 2022 15:15:22 GMT+0000 (Greenwich Mean Time) ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"Duet 3" ; set printer name M669 K1 ; select CoreXY mode G4 S2 ;wait for expansion boards to start ; Drives M569 P0.0 S1 ; physical drive 0.0 goes forwards M569 P0.2 S1 ; physical drive 0.2 goes forwards M569 P0.3 S1 ; physical drive 0.3 goes forwards z M569 P0.4 S1 ; physical drive 0.4 goes forwards z M569 P0.5 S1 ; physical drive 0.5 goes forwards z M569 P121.0 S1 ; physical drive 121.0 goes forwards M584 X0.0 Y0.2 Z0.3:4:5 E121.0 ; set drive mapping M671 X-23.188:193.021:409.23 Y-20.717:387.493:-20.717 S50 M350 X16 Y16 Z16 U16 V16 E16 I1 ; configure microstepping with interpolation M92 X160.00 Y160.00 Z800.00 E415.00 ; set steps per mm M566 X1200.00 Y1200.00 Z30.00 E1800.00 ; set maximum instantaneous speed changes (mm/min) M203 X18000.00 Y18000.00 Z1800.00 E3000.00 ; set maximum speeds (mm/min) M201 X1600.00 Y1600.00 Z100.00 E2000.00 ; set accelerations (mm/s^2) M906 X1200 Y1200 Z800 E800 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Axis Limits M208 X0 Y0 Z0 S1 ; set axis minima M208 X358 Y350 Z300 S0 ; set axis maxima ; Endstops M574 X1 S1 P"121.io2.in" ; configure switch-type (e.g. microswitch) endstop for low end on X via pin 121.io2.in M574 Y1 S1 P"io2.in" ; configure switch-type (e.g. microswitch) endstop for low end on Y via pin io2.in M574 Z1 S2 ; configure Z-probe endstop for low end on Z ; Z-Probe M950 S0 C"121.io0.out" ; create servo pin 0 for BLTouch M558 P9 C"121.io0.in" H15 F120 T9000 ; set Z probe type to bltouch and the dive height + speeds G31 P500 X0 Y0 Z4.6 ; set Z probe trigger value, offset and trigger height M557 X50:350 Y50:350 S20 ; define mesh grid ; Heaters M308 S0 P"spi.cs0" Y"rtd-max31865" ; configure sensor 0 as PT100 on pin spi.cs0 M950 H0 C"out0" Q5 T0 ; create bed heater output on out0 and map it to sensor 0 M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit M140 H0 ; map heated bed to heater 0 M143 H0 S120 ; set temperature limit for heater 0 to 120C M308 S1 P"121.temp0" Y"thermistor" T100000 B4267 ; configure sensor 1 as thermistor on pin 121.temp0 M950 H1 C"121.out0" T1 ; create nozzle heater output on 121.out0 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"out9" Q500 ; create fan 0 on pin out9 and set its frequency ;M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off M950 F1 C"121.out2" Q500 ; create fan 1 on pin 121.out2 and set its frequency M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on ; Tools M563 P0 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 ; Custom settings are not defined ; Miscellaneous M501 ; load saved parameters from non-volatile memory M911 S22 R23.5 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power losshomez.g
; homez.g ; called to home the Z axis ; ; generated by RepRapFirmware Configuration Tool v3.3.10 on Sat Jan 22 2022 15:15:24 GMT+0000 (Greenwich Mean Time) G91 ; relative positioning G1 H2 Z15 F9000 ; lift Z relative to current position G90 ; absolute positioning G1 X50 Y50 F9000 ; go to first probe point G30 ; home Z by probing the bed ; Uncomment the following lines to lift Z after probing ;G91 ; relative positioning ;G1 Z15 F150 ; lift Z relative to current position ;G90Bed.g
; bed.g ; called to perform automatic bed compensation via G32 ; ; generated by RepRapFirmware Configuration Tool v3.3.10 on Sat Jan 22 2022 15:15:22 GMT+0000 (Greenwich Mean Time) M561 ; clear any bed transform ;G29 ; probe the bed and enable compensation G30 P0 X35 Y15 Z-99999 ; probe near a leadscrew G30 P1 X205 Y350 Z-99999 ; probe near a leadscrew G30 P2 X355 Y15 Z-99999 S3 ; probe near a leadscrew and calibrate 3 motors -
@javajoeuk I had the same problem on my 6HC 3.4.0beta7+7, may have had the drives in the wrong order. So I changed the Z drivers to 3,4,5. In order of the lead screws: rear center, right front, left front. So far, it's working. 300x400 bed, but have the bed too far to the left to reach X400.
Relevant sections of config.g:
M569 P0.3 S1 M569 P0.4 S1 M569 P0.5 S1 M584 X0.0 Y0.1 Z0.3:0.4:0.5 E121.0 ; set drive mapping M671 X200:280:20 Y290:380:20 S2.0 ; leadscrews at rear middle, front left and front right, correct up to 2mmProbes in bed.g:
G30 P0 X200 Y270 Z-99999 ; probe near a leadscrew, back middle G30 P1 X350 Y20 Z-99999 ; probe near a leadscrew, front right G30 P2 X20 Y20 Z-99999 S3 ; probe near a leadscrew, front left and calibrate 3 motors -
@stephen6309 I had the front two drives switched FL and FR on the drive mapping which i have changed and will try later thanks for the help.
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hello see https://betrue3d.dk/bltouch-on-duet-wifi-configuratio-and-usage/
the various types of configurations are covered
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