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    Auto calibration delta radius adjustment is way off

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    Duet Hardware and wiring
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    • dvdrielundefined
      dvdriel
      last edited by

      Hi all,

      I replaced the rumba board in my delta printer to a Duet wifi board. After running auto calib my delta radius is being adjusted way to much. My own measurement is a delta radius of 185mm while the auto calib adjusts it to arounmd 150mm. After the adjustment the vector plate moves in a clear arc over the bed which makes my probe almost tuch the bed on the periphery of the build plate. What could be the problem?

      I am using a capacitive NPN Z-probe mounted at X-7 Y-24 Z2.03 . I know this is not ideal for a delta, but its what I currently have...

      Printer:
      TrpodMaker (Delta)
      Board: Duet 2 WiFi (2WiFi)
      Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.1.1 (2020-05-19b2)
      Duet WiFi Server Version: 1.23

      config.g:
      ; General preferences
      G90 ; send absolute coordinates...
      M83 ; ...but relative extruder moves
      M550 P"3DPrintert" ; set printer name
      M665 R185 L355 B115 H350 ; 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
      ;M552 S2 ; enable access point mode
      M586 P0 S1 ; enable HTTP
      M586 P1 S1 ; enable FTP
      M586 P2 S0 ; disable Telnet

      ; Drives
      M569 P0 S0 ; physical drive 0 goes forwards
      M569 P1 S0 ; physical drive 1 goes forwards
      M569 P2 S0 ; physical drive 2 goes forwards
      M569 P3 S0 ; physical drive 3 goes forwards
      M584 X0 Y1 Z2 E3 ; set drive mapping
      M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
      M92 X133.33 Y133.33 Z133.33 E400.49 ; 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 X1000.00 Y1000.00 Z1000.00 E1000.00 ; set accelerations (mm/s^2)
      M906 X1400 Y1400 Z1400 E1400 I10 ; 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 S1 P"xstop" ; configure active-high endstop for high end on X via pin xstop
      M574 Y2 S1 P"ystop" ; configure active-high endstop for high end on Y via pin ystop
      M574 Z2 S1 P"zstop" ; configure active-high endstop for high end on Z via pin zstop

      ; Z-Probe
      M558 P5 C"!zprobe.in" H5 F120 T6000 ; set Z probe type to unmodulated and the dive height + speeds
      G31 P500 X-7 Y-24 Z2.03 ; set Z probe trigger value, offset and trigger height
      M557 R85 S20 ; define mesh grid

      ; Heaters
      M308 S0 P"bedtemp" Y"thermistor" T100000 B3950 ; configure sensor 0 as thermistor on pin bedtemp
      M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
      M307 H0 B0 S1.00 ; disable 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"e0temp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin e0temp
      M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
      M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit

      ; Fans
      M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
      M106 P0 C"BOTTOM" S0 H-1 ; set fan 0 name and value. Thermostatic control is turned off
      M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
      M106 P1 C"EXTRUDER" S1 H1 T45 ; set fan 1 name and value. Thermostatic control is turned on
      M950 F2 C"fan2" Q500 ; create fan 2 on pin fan2 and set its frequency
      M106 P2 C"BED" S1 H-1 ; set fan 2 name and value. Thermostatic control is turned off

      ; Tools
      M563 S"Printhead 1" P0 D0 H1 F1; tool 0 uses extruder drive 0 and heater 1
      G10 P0 S0 R0 X0 Y0 ; set tool 0 temperatures and offsets

      ; Custom settings are not defined

      M501
      M564 H0

      bed.g:
      561 ; clear any bed transform
      ; Probe the bed at 3 peripheral and 3 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 Y100 H0 Z-99999
      G30 P1 X-90 Y55 H0 Z-99999
      G30 P2 X-100 Y-55 H0 Z-99999
      G30 P3 X0 Y-95 H0 Z-99999
      G30 P4 X100 Y-55 H0 Z-99999
      G30 P5 X90 Y55 H0 Z-99999
      G30 P6 X30 Y15 H0 Z-99999
      G30 P7 X0 Y55 H0 Z-99999
      G30 P8 X-40 Y30 H0 Z-99999
      G30 P9 X-45 Y-30 H0 Z-99999
      G30 p10 x0 y-50 H0 z-99999
      G30 p11 x40 y-20 H0 z-99999
      G30 p12 x0 y0 H0 z-99999 S6

      Cheers,

      Daan

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