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    Error in Sensorless homing

    Scheduled Pinned Locked Moved
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    • Timothee Leblondundefined
      Timothee Leblond
      last edited by droftarts

      Dear Community,

      I've now an other problem in setting up the sensorless homing for my XY axis after going through the guide.

      The error is as follows: "Error: in line 17: G1: insufficient axes homed". XY axes are homing, but X keeps bumping into the limit. Then everything stop and the error is displayed. I tried lowering F in my G1 commands in homing files as well as lowing current in M913 but still have the problem.

      ; Homex.g:

      M400 ; Wait for current moves to finish
; increase Z
G91 ; relative positioning
G1 H2 Z5 ; move Z relative to current position to avoid dragging nozzle over the bed
G90 ; absolute positioning

M913 X40 Y40 ; drop motor current to 70% -> for sensorless homing
; home X
G91 ; relative positioning
var maxTravel = move.axes[0].max - move.axes[0].min + 5 ; calculate how far X can travel plus 5mm
G1 H1 X{-var.maxTravel} F6000                            ; coarse home in the -X direction
G1 X5 F6000                                             ; move back 5mm
G1 H1 X{-var.maxTravel} F6000                            ; fine home in the -X direction
G90 ; absolute positioning

; decrease Z again
G91 ; relative positioning
G1 H2 Z-5 F6000 ; move Z relative to current position
G90 ; absolute positioning

M400 ; Wait for current moves to finish
M913 X100 Y100 ; return current to 100% -> for sensorless homing
M400 ; Wait for current moves to finish

      ;homey.g:

      ; increase Z
G91 ; relative positioning
G1 H2 Z5 ; move Z relative to current position to avoid dragging nozzle over the bed
G90 ; absolute positioning

M400 ; Wait for current moves to finish
M913 X40 Y40 ; drop motor current to 70% -> for sensorless homing
M400

; home Y
G91 ; relative positioning
var maxTravel = move.axes[1].max - move.axes[1].min + 5 ; calculate how far Y can travel plus 5mm
G1 H1 Y{-var.maxTravel} F6000                            ; coarse home in the -Y direction
G1 Y5 F6000                                             ; move back 5mm
G1 H1 Y{-var.maxTravel} F6000                            ; fine home in the -Y direction
G90 ; absolute positioning

; decrease Z again
G91 ; relative positioning
G1 H2 Z-5 F6000 ; move Z relative to current position
G90 ; absolute positioning

M400 ; Wait for current moves to finish
M913 X100 Y100 ; return current to 100% -> for sensorless homing
M400 ; Wait for current moves to finish

      ;homeall.g:

      ; increase Z
G91 ; relative positioning
G1 H2 Z5 F6000 ; move Z relative to current position to avoid dragging nozzle over the bed
G90 ; absolute positioning

; home XY

M400
M913
M400
var xTravel = move.axes[0].max - move.axes[0].min + 5 ; calculate how far X can travel plus 5mm
var yTravel = move.axes[1].max - move.axes[1].min + 5 ; calculate how far Y can travel plus 5mm
G91 ; relative positioning
G1 H1 X{-var.xTravel} Y{-var.yTravel} F6000 ; coarse home in the -X and -Y directions
G1 H2 X5 Y5 F6000 ; move back 5mm
G1 H1 X{-var.xTravel} Y{-var.yTravel} F6000 ; fine home in the -X and -Y directions
G90 ; absolute positioning
M400
M913
M400
; home Z
var xCenter = move.compensation.probeGrid.mins[0] + (move.compensation.probeGrid.maxs[0] - move.compensation.probeGrid.mins[0]) / 2 - sensors.probes[0].offsets[0]
var yCenter = move.compensation.probeGrid.mins[1] + (move.compensation.probeGrid.maxs[1] - move.compensation.probeGrid.mins[1]) / 2 - sensors.probes[0].offsets[1]
G1 X{var.xCenter} Y{var.yCenter} F6000 ; go to bed centre
G30 ; probe the bed

      Thanks in advance,

      jay_s_ukundefined 1 Reply Last reply Reply Quote 0
      • jay_s_ukundefined
        jay_s_uk @Timothee Leblond
        last edited by

        @Timothee-Leblond board? Firmware version? Copy of your config?

        Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

        Timothee Leblondundefined 1 Reply Last reply Reply Quote 0
        • Timothee Leblondundefined
          Timothee Leblond @jay_s_uk
          last edited by

          @jay_s_uk

          I'm using a Mini 5+ under the 3.5.4 version.

          Below my config.g:

          ; Default config.g template for DuetPi
; Replace this with a proper configuration file (e.g from https://configtool.reprapfirmware.org)

; Display initial welcome message
M291 P"You are operating an SBC image in standalone mode. Please see <a href=""https://www.duet3d.com/StartHere"" target=""_blank"">here</a> further information." R"Welcome to your new Duet 3!" S1 T0

; Enable PanelDue
M575 P1 B57600 S1

; Enable network
; M552 P0.0.0.0 S1

; Configuration file for RepRapFirmware on Duet 3 Mini 5+ Ethernet
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.5.8 on Fri Dec 13 2024 08:59:52 GMT-0500 (Eastern Standard Time)

; General
G90 ; absolute coordinates
M83 ; relative extruder moves
M550 P"Duet 3" ; set hostname
M915 X Y R0 F0 ; set sensorless homing

M302 P1   ; Allow cold extrusion

; Accessories
M575 P1 S0 B57600 ; configure PanelDue support

; Wait a moment for the CAN expansion boards to become available
G4 S2

; Smart Drivers
M569 P0.0 S1 D2 ; driver 0.0 goes forwards (X axis)
M569 P0.1 S1 D2 ; driver 0.1 goes forwards (Y axis)
M569 P0.2 S1 D2 ; driver 0.2 goes forwards (Z axis)
M569 P121.0 S0 D2 ; driver 20.0 goes forwards (extruder 0)

; Motor Idle Current Reduction
M906 I30 ; set motor current idle factor
M84 S30 ; set motor current idle timeout

; Axes
M584 X0.0 Y0.1 Z0.2 ; set axis mapping
M350 X16 Y16 Z16 I1 ; configure microstepping with interpolation
M906 X800 Y800 Z800 ; set axis driver currents
M92 X80 Y80 Z400 ; configure steps per mm
M208 X-6:310 Y0:310 Z-5:405 ; set minimum and maximum axis limits
M566 X900 Y900 Z12 ; set maximum instantaneous speed changes (mm/min)
M203 X6000 Y6000 Z180 ; set maximum speeds (mm/min)
M201 X500 Y500 Z20 ; set accelerations (mm/s^2)

; Extruders
M584 E121.0 ; set extruder mapping
M350 E16 I1 ; configure microstepping with interpolation
M906 E800 ; set extruder driver currents
M92 E100 ; configure steps per mm
M566 E120 ; set maximum instantaneous speed changes (mm/min)
M203 E3600 ; set maximum speeds (mm/min)
M201 E250 ; set accelerations (mm/s^2)

; Kinematics
M669 K0 ; configure Cartesian kinematics

; Probes

M950 P0 C"out6"                              ; Set servo output on Mini 5+ 
M558 P9 H6 F250:30 T8000 C"^!io6.in"            ; Set probe input to IO_6 on Mini 5+
G31 P500 X0 Y0 Z0                                  ; set Z probe trigger value, offset and trigger height

;M950 S0 C"121.io0.out"                              ; Set servo output on Rototoolboard
;M558 P9 H6 F250:30 T8000 C"^!121.io0.in"            ; Set probe input to IO_0 on Rototoolboard
;G31 P500 X0 Y0 Z0                                  ; set Z probe trigger value, offset and trigger height

; Endstops
M574 X1 S3                            ; configure X axis endstop
M574 Y1 S3                            ; configure Y axis endstop
M574 Z1 S2                            ; configure Z axis endstop
M915 X Y R0 F0

; Tools
M563 P0 S"MainExtruder" D0 ; create Tool 0 using Extruder Drive 0
G10 P0 S0 R0 ; set Tool 0 active and standby temperatures to 0
T0 ; select Tool 0 at startup

          Thanks for your help!

          jay_s_ukundefined 1 Reply Last reply Reply Quote 0
          • jay_s_ukundefined
            jay_s_uk @Timothee Leblond
            last edited by

            @Timothee-Leblond see the two posts here about sensorless homing https://forum.duet3d.com/post/351246
            Your drivers need to be in stealthchop and yours are currently set to spreadcycle

            Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

            Timothee Leblondundefined 1 Reply Last reply Reply Quote 0
            • Timothee Leblondundefined
              Timothee Leblond @jay_s_uk
              last edited by

              @jay_s_uk

              Even with stealthchop on with D3 it's not working.
              Sensorless homing is turned on. I tried varying the speeds but nothing work.

              ; Smart Drivers
M569 P0.0 S1 D3 V188; driver 0.0 goes forwards (X axis)
M569 P0.1 S1 D3 ; driver 0.1 goes forwards (Y axis) 
M569 P0.2 S1 D3 ; driver 0.2 goes forwards (Z axis) 
M569 P121.0 S0 D3 ; driver 20.0 goes forwards (extruder 0)
              jay_s_ukundefined 1 Reply Last reply Reply Quote 0
              • jay_s_ukundefined
                jay_s_uk @Timothee Leblond
                last edited by

                @Timothee-Leblond I don't see an M915 gcode setting the correct S and H values for your system. Best read the docs properly on sensorless homing

                Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

                Timothee Leblondundefined 1 Reply Last reply Reply Quote 0
                • Timothee Leblondundefined
                  Timothee Leblond @jay_s_uk
                  last edited by Timothee Leblond

                  @jay_s_uk

                  I kinda got what you meant. I tried using the following parameters and not It is not making noise anymore and works properly.

                  M915 X Y S5 R1 F1 H2  ; set sensorless homing

                  Do I need to put the same M915 at the end of my config.g after the endstop section? (instead of M915 X Y R0 F0)

                  Also, using a Biqu microprobe as Z sensor - Should I use the same parameters for Z axes such as D3 for stealthchop? Does my homez looks good:

                  ; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.5.8 on Tue Dec 10 2024 15:03:23 GMT-0500 (Eastern Standard Time)

; ################# Home Z Preparation ################

G91 															; Relative mode
G1 H2 Z5 F5000													; Lower the bed
G90	
var xCenter = move.compensation.probeGrid.mins[0] + (move.compensation.probeGrid.maxs[0] - move.compensation.probeGrid.mins[0]) / 2 - sensors.probes[0].offsets[0]
var yCenter = move.compensation.probeGrid.mins[1] + (move.compensation.probeGrid.maxs[1] - move.compensation.probeGrid.mins[1]) / 2 - sensors.probes[0].offsets[1]
G1 X{var.xCenter} Y{var.yCenter} F4000 ; go to bed centre															; Back to absolute positioning

; ################# Home Z Preparation ################

G30					 											; Probe a single point
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