Z probe not triggering

mfran

Hi all
I have just built a Delta 3d printer. I am completely new to the world of 3d printing. I am using a Duet wifi.

I have every thing wired up and I have used the RRF config utillity and uploaded the files to Duet and when I press the Home all button the 3 axis motors work and move to home position nicely.

However, when I press the Auto Delta Calibration button I immediately get the message Error Z probe was not triggered during probing move. The axis motors don't move a millimetre from home.

My Z probe is a micro switch. At rest the z probe reads zero on screen and when I manually close the switch it reads 1000. The switch is wired to the EO end stop connector on the duet.

Have I got something wired wrong? or some setting wrong.

Here is my config.g
; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2 on Fri Apr 19 2019 16:08:59 GMT+0100 (British Summer Time)

; General preferences
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves
M665 R305 L270 B275 H315 ; 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
M550 P"Polygon2060" ; Set machine name
M552 S1 ; Enable network
M587 S"Hey You. Stay Off My Wifi!!!" P"*********" ; Configure access point. You can delete this line once connected
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Drives
M569 P0 S1 ; Drive 0 goes forwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes forwards
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X80.00 Y80.00 Z80.00 E147.32 ; Set steps per mm
M566 X1200.00 Y1200.00 Z1200.00 E1200.00 ; Set maximum instantaneous speed changes (mm/min)
M203 X19999.80 Y19999.80 Z19999.80 E3600.00 ; Set maximum speeds (mm/min)
M201 X1000.00 Y1000.00 Z1000.00 E1000.00 ; Set accelerations (mm/s^2)
M906 X1000.00 Y1000.00 Z1000.00 E800.00 I60 ; 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

; Z-Probe
M558 P4 H30 F120 T6000 ; Set Z probe type to switch and the dive height + speeds
M558 H30 ;*** Remove this line after delta calibration has been done and new delta parameters have been saved
G31 P500 X0 Y0 Z17 ; Set Z probe trigger value, offset and trigger height
M556 S50 X0 Y0 Z0 ; Set orthogonal axis compensation parameters
M557 R275 S20 ; Define mesh grid

; Heaters
M140 H-1 ; Disable heated bed
M305 P1 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S280 ; Set temperature limit for heater 1 to 280C

; Fans
M106 P0 S0 I0 F500 H1 T45 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P0 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 saving after power loss is not enabled

; Custom settings are not configured

; Miscellaneous
M501 ; Load saved parameters from non-volatile memory

I have searched and read posts relating to this error but they have not been helpful to me.
Any help would be welcome
Thanks

aidar

Is your bed.g file set as needed? Look at https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareDeltaPrinter#Section_Setting_up_the_auto_calibration_file

mfran

@aidar thanks for your reply. I will check tomorrow as I have now resorted to Gin & tonic to cool the melted bain cells.

mfran

I copied the example you refered to and deleted the M401 & M402 commands as my probe is manually deployed.
I still get exactly the same result with same error.

Here is my bed.g
M561 ; clear any bed transform, otherwise homing may be at the wrong height
G28 ; home the printer

;''' Probe the bed and do 6-factor auto calibration'''
G30 P0 X-73.53 Y-42.45 Z-99999 ; X tower
G30 P1 X0 Y-85 Z-99999 ; between X and Y towers
G30 P2 X73.53 Y-42.45 Z-99999 ; Y tower
G30 P3 X73.53 Y20 Z-99999 ; between Y and Z towers
G30 P4 X0 Y67 Z-99999 ; Z tower
G30 P5 X-73.53 Y20 Z-99999 ; between Z and X towers
G30 P6 X-36.8 Y-21.25 Z-99999 ; half way to X tower
G30 P7 X36.8 Y-21.25 Z-99999 ; half way to Y tower
G30 P8 X0 Y42.5 Z-99999 ; half way to Z tower
G30 P9 X0 Y0 Z-99999 S6 ; centre, and auto-calibrate 6 factors

G1 X0 Y0 Z150 F15000 ; get the head out of the way of the bed

Where do I look next?
Thanks

mfran

I solved this problem. Further reading I discovered that in my M665 settings I had entered diameters instead of radii. I changed those and immediately I was able to initiate auto callibration.