@T3P3Tony Following up on this as I am still a bit confused with this setup. I am running Bigtrees smart F sensor on many of my marlin machines, which I believe follows the same concept of the duet one.

I had it without. Disabled because it was not working.

Good day,

I have installed the IR Duet F sensor on my Duet 2. Can't seem to get feedback on the thing using M591 D0 or print functionally. It is installed right before a Titan extruder. I have extrusion but it does not seem to pick it up.
This is in my config
;M591 D0 P3 C3 S1 R70:130 L24.8 E8.0 ; Duet3D rotating magnet sensor for extruder drive 0 is connected to E0 endstop input, enabled, sensitivity 24.8mm.rev, 70% to 130% tolerance, 3mm detection length

;M591 D0 ; display filament sensor parameters for extruder drive 0

Thank you!

@Phaedrux Thank you for all your help on this. I bought the endstop and its coming in a few days so no need to waste both our time on this. Sorry for the inconvenience.

Now it homes one axis every time I G28 but a different axis every time with a net downward movement still.

Okay this one was odd.

Y and Z jumped down a good 50mm but then raised up about half that distance but is now lowering every time I run G28.

X just lowers to the same height that Y and Z end in one motion.

@Phaedrux

My config

; Configuration file for Duet WiFi (firmware version 2.03)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Sat Apr 25 2020 21:37:52 GMT-0400 (Eastern Daylight Time)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"The Fortune Teller" ; set printer name
M665 R155 L397.19 B155 H520 ; 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
M551 P"Turnip123!" ; 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 Z80.00 E403.00 ; set steps per mm
M566 X1200.00 Y1200.00 Z1200.00 E1200.00 ; set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z18000.00 E9000.00 ; set maximum speeds (mm/min)
M201 X5000.00 Y5000.00 Z5000.00 E1000.00 ; set accelerations (mm/s^2)
M906 X1000 Y1000 Z1000 E800 I30 ; 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 S3 ; set endstops controlled by motor stall detection

; Z-Probe
M307 H3 A-1 C-1 D-1 ; disable heater on PWM channel for BLTouch
M558 P9 H5 F120 T7200 ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X0 Y20 Z1.3 ; set Z probe trigger value, offset and trigger height
M557 R150 S45 ; define mesh grid

; Heaters
M307 H0 B0 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit
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 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 S"Extruder" 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
M591 D0 C3 P2 E6.0

My homedelta

; homedelta.g
; called to home all towers on a delta printer
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Sat Apr 25 2020 21:37:52 GMT-0400 (Eastern Daylight Time)
M400 ; make sure everything has stopped before we make changes
M915 P0:1:2 S2 F1 H400 R0
M574 X2 Y2 Z2 S3 ; set endstops to use motor stall
M913 X55 Y55 Z55 ; reduce motor current to 50% to prevent belts slipping
G91 ; relative positioning
G1 H1 X705 Y705 Z705 F4000 ; move all towers to the high end stopping at the endstops (first pass)
G1 H2 X-5 Y-5 Z-5 F7200 ; go down a few mm
G1 H1 X10 Y10 Z10 F360 ; move all towers up once more (second pass)
G1 Z-5 F7200 ; move down a few mm so that the nozzle can be centred
G90 ; absolute positioning
G1 X0 Y0 F7200 ; move X+Y to the centre
M400 ; make sure everything has stopped before we reset the motor currents
M913 X100 Y100 Z100 ; motor currents back to normal
G1 X0 Y0 F2000 ; centre the head and set a reasonable feed rate

What currently happens with this specific homedelta.g is the effector rams itself into the endstop position and returns two errors, target position not reachable from current position and insufficient axis homed.

@Phaedrux said in Tevo Little Monster delta endstopless homing:

I live near New York City and I have put my 14 3D printers to work printing 250 shields a day. I was running my SBase on the TLM until the board died. Turned out one of my endstops died too, which is why I am trying to run sensor less homing. My temp errors went away when I moved to Firmware 2.03-2.05 from 3, so that's taken care of. Guess ill buy the endstop and wait another week until I bring this thing back to life.

On top of that all my thermistors are now reading 2000 even though everything is all connected.

So after the changes and DC42s recommendation I am back where I started... I really don't know what to do. I am running the same setup and an Ender 3 and it works perfectly and I cant even get this this thing to home.