Duet Smart Effector not triggering on first probe point

Daniel_Lacroix · 6 Jun 2022, 22:13

When auto leveling, the first probe point is not considered triggered although the nozzle hits the bed. The green indicator light is not turned on either although the nozzle scrapes against the bed. On all subsequent probe points the green indicator comes on and the point is considered triggered. Only the first point fails to trigger.

Here is my Config.G:

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Jul 20 2020 19:57:06 GMT-0500 (Central Daylight Time)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"Anycubic Predator" ; set printer name
M665 R227 L440.45 B185 H410 ; 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 P192.168.86.37 S1 ; enable network and acquire dynamic address via DHCP
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable 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 X80.00 Y80.00 Z80.00 E3292.68 ; set steps per mm (TPU)
M92 X80.00 Y80.00 Z80.00 E4500 ; set steps per mm (PLA)
M566 X1500.00 Y1500.00 Z1500.00 E40.00 P1 ; set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z18000.00 E10000.00 ; set maximum speeds (mm/min)
M201 X1500.00 Y1500.00 Z1500.00 E120.00 ; set accelerations (mm/s^2)
M906 X1000 Y1000 Z1000 E1000 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Retraction
; M207 S1 F1800 Z0.388 ; Firmware retraction

; 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
; M591 D0 P7 C"e0stop" L7 R50:200 E15 S1 ; filament sensor connected to e0_stop

; Z-Probe
M558 P8 R0.4 C"zprobe.in+zprobe.mod" H10 F1200 T6000 ; set Z probe type to effector and the dive height + speeds
G31 P100 X0 Y0 Z.1 ; set Z probe trigger value, offset and trigger height
M557 R180 S20 ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; 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 A137.8 C533.3 D1.5 V24.3 B0 ; 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"pt1000" R4700 ; configure sensor 1 as PT1000 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 2 on pin fan2 and set its frequency
M106 P2 S0 H-1 ; set fan 2 value. Thermostatic control is turned off

; Tools
M563 P0 S"Hotend" 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
M572 D0 S0.2 ; pressure advance

; Miscellaneous
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
M501 ; set the active parameters to those stored in sys/config-override.g

jay_s_uk · 6 Jun 2022, 22:40

I guess you need to check your wiring.
Does the led light up on board power on?
Does it light up if you tap the nozzle with your finger fairly hard?

Daniel_Lacroix · 6 Jun 2022, 23:19

@jay_s_uk
I checked the wiring on both ends and they make a connection. The LED blinks twice when powering on and blinks once when tapped.

Daniel_Lacroix · 6 Jun 2022, 23:46

@jay_s_uk
I am getting this error when activating the hotend: new tool too close to z axis limit. aborting tool change

Daniel_Lacroix · 7 Jun 2022, 00:16

@jay_s_uk
Here is my homedelta.g file:

; homedelta.g
; called to home all towers on a delta printer
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Jul 20 2020 19:57:06 GMT-0500 (Central Daylight Time)
G91 ; relative positioning
G1 H1 X505 Y505 Z505 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

Phaedrux · 7 Jun 2022, 04:35

Does it trigger properly on a single G30?

Can you post your bed.g as well?

Can you post a video of it happening?

Daniel_Lacroix · 6 Nov 2022, 22:59

@phaedrux
Here is my bed.g:

; bed.g
; called to perform automatic delta calibration via G32
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Jul 20 2020 19:57:05 GMT-0500 (Central Daylight Time)
M561 ; clear any bed transform
G28 ; home all towers
G1 E-1.9 F300 ; retract a little
; Probe the bed at 6 peripheral and 6 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 Y179.9 H0 Z-99999
G30 P1 X155.8 Y89.95 H0 Z-99999
G30 P2 X155.8 Y-89.95 H0 Z-99999
G30 P3 X0 Y-179.9 H0 Z-99999
G30 P4 X-155.8 Y-89.95 H0 Z-99999
G30 P5 X-155.8 Y89.95 H0 Z-99999
G30 P6 X0 Y89.9 H0 Z-99999
G30 P7 X77.86 Y44.95 H0 Z-99999
G30 P8 X77.86 Y-44.95 H0 Z-99999
G30 P9 X0 Y-89.9 H0 Z-99999
G30 P10 X-77.86 Y-44.95 H0 Z-99999
G30 P11 X-77.86 Y44.95 H0 Z-99999
G30 P12 X0 Y0 H0 Z-99999 S6
; Use S-1 for measurements only, without calculations. Use S4 for endstop heights and Z-height only. Use S6 for full 6 factors
; If your Z probe has significantly different trigger heights depending on XY position, adjust the H parameters in the G30 commands accordingly. The value of each H parameter should be (trigger height at that XY position) - (trigger height at centre of bed)
G29 ; grid map

G30 results in a successful probe.

Here is a video of it happening. This time it triggered after ramming the bed and grinding against it:
https://imgur.com/a/axEAujM
It seems to have a problem with that area on the second pass as well. I'm guessing it may have to do with the sensor wiring touching or coming into proximity with the magnets in the rods.

Phaedrux · 11 Jun 2022, 23:10

@daniel_lacroix said in Duet Smart Effector not triggering on first probe point:

Here is a video of it happening. This time it triggered after ramming the bed and grinding against it:
https://imgur.com/a/axEAujM

Which ones fails? I can't tell from the video that one is failing.

Daniel_Lacroix · 12 Jun 2022, 03:46

@phaedrux
The first point. I have since moved the wires away from the rods and am not getting any failures. It seems to have been the magnets in the rods interfering with the current going to and from the sensor.

dc42 · 12 Jun 2022, 06:28

@daniel_lacroix said in Duet Smart Effector not triggering on first probe point:

@phaedrux
The first point. I have since moved the wires away from the rods and am not getting any failures. It seems to have been the magnets in the rods interfering with the current going to and from the sensor.

Most likely you have a poor crimp connection and one of the wires was only making contact sometimes depending on the angle between the wire and the connector.

Daniel_Lacroix · 12 Jun 2022, 19:10

@dc42
That's what I thought, too, so I reinstalled new crimps with no luck