Need help in setup a cartesian printer



  • Hello,

    I need help to understand where is the problem when i do atuocalibration or Mesh grid compensation, i believe th G30 command is the problem or i am not doing something right.
    Details:
    Home X working good
    Home Y working good
    Home Z working good

    When i try to do G30 command printer is behave like is out of limits. Move in X Axis is passing the endstop and the coordinate si set 0,0,0 but in a middle of the one axis, like the absolute coordinate is translated and is out of sync.

    my config g is:

    ; Configuration file for Duet WiFi (firmware version 1.21)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool on Wed Aug 22 2018 13:56:44 GMT+0300 (Eastern European Summer Time)

    ; General preferences

    ; Network
    M550 PMICROBOT ; Set machine name
    M552 S1 ; Enable network
    M587 S"CRM_DEV" P"CRM_DEV" ; Configure access point. You can delete this line once connected
    M586 P0 S1 ; Enable HTTP
    M586 P1 S1 ; Enable FTP
    M586 P2 S0 ; Disable Telnet

    ; Drives
    M569 P0 S0 ; Drive 0 goes backwards
    M569 P1 S0 ; Drive 1 goes backwards
    M569 P2 S0 ; Drive 2 goes backwards
    M569 P3 S1 ; Drive 3 goes forwards
    ; Microsrtepping
    M350 X64 Y64 Z32 E32 I0 ; Configure microstepping without interpolation
    M92 X320 Y320 Z1600 E420 ; Set steps per mm
    M566 X1200 Y1200 Z1000 E6000:6000 ; Set Jerk/maximum instantaneous speed changes (mm/min)
    M203 X20000 Y20000 Z600 E8000:8000 ; Set XYZ and E0:E1 maximum speeds (mm/min)
    M201 X600 Y600 Z150 E2000 ; Set accelerations (mm/s^2)
    M906 X1200 Y1200 Z1800 E1800 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30 I30 ; Set idle timeout and motor idle factor in per cent
    G21 ; Work in millimetres
    G90 ; Send absolute coordinates...
    M83 ; ...but relative extruder moves
    ; Axis Limits
    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X199 Y193 Z173 S0 ; Set axis maxima

    ; Endstops
    M574 X1 Y1 S0 ; Set active low endstops

    ; Z-Probe
    M574 Z2 S2 ; Set endstops controlled by probe
    M558 P1 H5 F120 T6000 ; Set Z probe type to unmodulated and the dive height + speeds
    G31 P500 X0 Y0 Z2.5 ; Set Z probe trigger value, offset and trigger height
    M556 S0 X0 Y0 Z0 ; Set orthogonal axis compensation parameters
    M557 X0:160 Y0:180 S40 ; Define mesh grid

    ; Heaters
    M305 P0 X500 ; Configure thermocouple for heater 0
    M143 H0 S120 ; Set temperature limit for heater 0 to 120C
    M305 P1 X501 ; Configure thermocouple for heater 1
    M143 H1 S280 ; Set temperature limit for heater 1 to 280C

    ; Fans
    M106 P0 S1 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 S1 I0 F500 H0 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P2 S1 I0 F500 H0 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

    ; Tools
    M563 P0 D0 H1 ; 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

    ; Automatic power saving
    M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss

    ; Custom settings are not configured

    ; Miscellaneous
    M501 ; Load saved parameters from non-volatile memory
    T0 ; Select first tool

    homeall.g is
    G91 ; relative mode
    G1 Z4 F200 S2 ; raise head 4mm
    G1 X-204 Y-198 F3000 S1 ; move up to 240mm in the -X and -Y directions until the homing switches are triggered
    G1 X4 Y4 F600 S2; move slowly 6mm in +X and +Y directions
    G1 X-10 Y-10 S1 ; move up to 10mm in the -X and -Y directions until the homing switches are triggered
    G90 ; back to absolute mode
    G1 X100 Y100 F2000 S2; put head over the centre of the bed, or wherever you want to probe
    G30 ; lower head, stop when probe triggered and set Z to trigger height

    bed.g is
    M561 ; clear any existing bed transform
    ;M401 ; deploy Z probe if necessary
    G30 P0 X0 Y0 Z-99999 ; define 4 points in a clockwise direction around the bed, starting near (0,0)
    G30 P1 X160 Y0 Z-99999
    G30 P2 X160 Y180 Z-99999
    G30 P3 X10 Y180 Z-99999
    G30 P4 X100 Y100 Z-99999 S0 ; finally probe bed centre, and calculate compensation
    ;M402 ; retract the Z probe
    G1 X0 Y0 F5000 ; move the head to the corner (optional)

    Can somebody help me to understand what is wrong in my setup



  • @sergiucip said in Need help in setup a cartesian printer:

    G30 P0 X0 Y0 Z-99999 ; define 4 points in a clockwise direction around the bed, starting near (0,0)
    G30 P1 X160 Y0 Z-99999
    G30 P2 X160 Y180 Z-99999
    G30 P3 X10 Y180 Z-99999
    G30 P4 X100 Y100 Z-99999 S0 ; finally probe bed centre, and calculate compensation

    This might not be your problem, but that looks like an anticlockwise pattern, rather than clockwise as required. By convention, (0,0) is the bottom-left hand corner of the bed, and (xMax, yMax) is the top-right corner.

    Note that the motion of the nozzle, relative to the bed, is what's needed here. With moving-Y printers, this can be counter-intuitive.

    adavidm



  • I have a correct bed.g now, behaviore is the same, when i do G29 actually it will go correct until the end,but in the final sequence after the last point is scanned the Y axis pass the end stop parc the head in the middle of X axis and set the coordinate X=0,Y=0 but is not in the origin point (X=0,Y=0)



  • Few...i find what is wrong...for anybody with this issue you need to delete deployprobe and retract probe.g from sys

    Thank for the help


  • administrators

    Sounds like somehow you ended up with recent firmware but an old SD card image. In which case, your resume.g file may need to be updated.


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