Solved Delta calibration and Z height
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Tried migrating an old kossel mini from its RAMPS board to a Maestro yesterday, after a bit of headbashing most seemed to work, but can't quite seem to get the Z height set.
From my understanding this should be the H parameter to
M665
, and notM208
as with a cartesian system? But despite having this set to 217 and noM208 Zn S0
I end up with Z=207 after homing.homedelta.g does have a Z-5 move, so I would expect the end result to be Z=212? (no config-override.g yet)
; homedelta.g ; called to home all towers on a delta printer ; ; generated by RepRapFirmware Configuration Tool v2.1.8 on Thu May 21 2020 15:20:35 GMT+0200 (Central European Summer Time) G91 ; relative positioning G1 H1 X265 Y265 Z265 F1800 ; move all towers to the high end stopping at the endstops (first pass) G1 H2 X-5 Y-5 Z-5 F1800 ; go down a few mm G1 H1 X10 Y10 Z10 F360 ; move all towers up once more (second pass) G1 Z-5 F6000 ; move down a few mm so that the nozzle can be centred G90 ; absolute positioning G1 X0 Y0 F6000 ; move X+Y to the centre
; Configuration file for Duet Maestro (firmware version 2.03) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v2.1.8 on Thu May 21 2020 15:20:35 GMT+0200 (Central European Summer Time) ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"Delta" ; set printer name M665 R144.9 L216 B50 H217 ; 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 S1 ; enable network and acquire dynamic address via DHCP M586 P0 S1 ; enable HTTP ; Drives M569 P0 S0 ; physical drive 0 goes backwards (x) M569 P1 S0 ; physical drive 1 goes backwards (y) M569 P2 S0 ; physical drive 2 goes backwards (z) M569 P3 S0 ; physical drive 3 goes backwards (e0) M584 X0 Y1 Z2 E3 ; set drive mapping M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X100.00 Y100.00 Z100.00 E95.00 ; set steps per mm ;old values from marlin? ;M566 X1200.00 Y1200.00 Z1200.00 E1200.00 ; set maximum instantaneous speed changes (mm/min) ;M203 X30000.00 Y30000.00 Z30000.00 E1500.00 ; set maximum speeds (mm/min) ;M201 X1000.00 Y1000.00 Z1000.00 E1000.00 ; set accelerations (mm/s^2) ;M906 X500 Y500 Z500 E500 I30 ; set motor currents (mA) and motor idle factor in per cent ;low and slow for comissioning M566 X500.00 Y500.00 Z500.00 E500.00 ; set maximum instantaneous speed changes (mm/min) M203 X10000.00 Y10000.00 Z10000.00 E1500.00 ; set maximum speeds (mm/min) M201 X250.00 Y250.00 Z250.00 E250.00 ; set accelerations (mm/s^2) M906 X300 Y300 Z300 E300 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, high end. ; Z-Probe M558 P0 H5 F120 T6000 ; disable Z probe but set dive height, probe speed and travel speed M557 R50 S20 ; define mesh grid ; Heaters M305 P0 T100000 B4092 R2200 ; set thermistor + ADC parameters for heater 0 M143 H0 S100 ; set temperature limit for heater 0 to 100C M305 P1 T100000 B4092 R2200 ; set thermistor + ADC parameters for heater 1 M143 H1 S250 ; set temperature limit for heater 1 to 250C ; Fans M106 P0 S0 I0 F500 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 ; 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 M81 ;turn off ATX supply just in case ;M501 ;leave out config-override.g for now
Edit: never figured out what caused the discrepancy, but we commented out the Z-5 and X0 Y0 moves from homedelta.g and ran G92 Z217 before redoing the auto calibration using the paper method. Then save the new values and enable config-override and its all good.