Optical Endstop Firmware detection

Katz

I'm struggling with the detection of my optical endstop on my duet 2 Wifi.

EndStop used : https://www.aliexpress.com/item/32861519345.html?spm=a2g0s.9042311.0.0.27426c378PGuhp

I have wired 3 of them this way (on x, y and z) :

V -> 3.3v
S -> Signal
G -> Ground

There is only those 3 optical sensor connected to the board.
With power, the optical switch are correctly powered and the red led on top is On

(this LED)
text alternatif

And the LED on the Duet board are also On (and very bright) and when i toggle the switch, both LED on the switch and the Duet turn off.

text alternatif

But when i try to send M119 (with the sensor triggered or not) i get :
Endstops - X: no endstop, Y: no endstop, Z: no endstop, Z probe: at min stop

What i tryed :

Solder a 220Ohm resistor to the R1 Resistor of my switch to get a 100 Ohm average resistor. -> no difference, the LEDs have the same behaviour and same for M119.
Changing M574 from S1 to S0
Connect the sensor differently :

V -> 5v
S -> Signal
G -> Ground

5V taken here :
text alternatif

No difference, the LEDs still works like a charm but nothing more with the M119 command.

I don't think the issues come from the sensor or the duet board but rather on the firmware side because of the LED working normally.

Here is my my config.g :

; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Thu Mar 04 2021 23:01:24 GMT+0100

; General preferences
G90                                     ; send absolute coordinates...
M83                                     ; ...but relative extruder moves
M550 P"HyberCube"                       ; set printer name
M667 S1                                 ; select CoreXY mode

; Network
M551 P"Nice try :)"                     ; set password
M552 S1                                 ; enable network
M586 P0 S1                              ; enable HTTP
M586 P1 S0                              ; disable FTP
M586 P2 S0                              ; disable Telnet

; Drives
M569 P0 S1                              ; physical drive 0 goes forwards
M569 P1 S1                              ; physical drive 1 goes forwards
M569 P2 S1                              ; physical drive 2 goes forwards
M569 P3 S1                              ; 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 Z400.00 E420.00       ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00     ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00     ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 I30            ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                        ; set axis minima
M208 X300 Y300 Z300 S0                  ; set axis maxima

; Endstops
M574 X1 Y1 Z1 S1                        ; set active high endstops

; Z-Probe
M558 P5 H5 F120 T6000                   ; set Z probe type to switch and the dive height + speeds
G31 P500 X0 Y0 Z0                       ; set Z probe trigger value, offset and trigger height
M557 X15:215 Y15:195 S20                ; define mesh grid

; Heaters
M305 P0 T100000 B4138 R4700             ; set thermistor + ADC parameters for heater 0
M143 H0 S120                            ; set temperature limit for heater 0 to 120C
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 H-1                  ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45               ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P0 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

; Miscellaneous
M575 P1 S1 B57600                       ; enable support for PanelDue

Thanks a lot if your have ideas to solve this issue, i lost many hours on it...

alankilian

My endstop definitions look like this:

; generated by RepRapFirmware Configuration Tool v3.2.3 on Wed Feb 17 2021 12:04:29 GMT-0500 (Eastern Standard Time)
; 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

mrehorstdmd

@Katz In my printer I use active high opto endstops on all three axes. I used these because they include a comparator chip to ensure hard on or hard off switching. They work fine with the 3.3V supplied on the endstop connectors on the Duet board, but I had to swap two of the wires on the supplied cables to match the pinout of the Duet board.

My config looks like this:

M574 X2 S1 P"!xstop"
M574 Y2 S1 P"!ystop"
M574 Z1 S1 P"!zstop"

The ! inverts the signal.

Is your Z endstop actually at Zmax?

You should probably update your firmware...

Phaedrux

See if this applies to your endstops.

https://duet3d.dozuki.com/Wiki/Connecting_endstop_switches#Section_3_3V_compatible_optical_endstop

fcwilt

This post is deleted!

Katz

thanks to all of you, you just made my day.

and specially for the "You should probably update your firmware..." from @mrehorstdmd

I was already on 3.2.2 firmware version but in the RepRapFirmware Configuration Tool i have selected 1.21 ... what a noob mistake ^^

@alankilian yes, when i saw your endstop definition, i realisez they were something wrong with mine.

@Phaedrux I have already did this trick but thanks for the tips anyway.

@fcwilt Hi, i don't know where you see me talking about this piece of code :

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"

But now it works ! Thanks all of you.