@jay_s_uk Sorry 25A

No I hadnt but have now. When I looked down the list 3.1 was above 2.05 and 3.0 was below and I didnt see it.

@jay_s_uk Changed the sensor.
It was the same initially, but its behaving it self now.
When the print finishes will change the wiring connector. It's a 12 way molex. I have spares, so I will cut the wires and re-crimp them. see if that makes any difference. But moving the wires about didnt show any problems, but will change anyhow.

sorted that out Frederick, the default end stop setting says
active high endstop switch but X1 is low end it needs to be X2

@jay_s_uk
Just to let you know tony I did the heater tuning as you suggested and its now completely flat. (the blip at the end was where the print finished and switched off and I reset the temp for the next print.)
Thank you for your patience.

Found it. I was looking on the dashboard and its on the status.

I understand, and if I turn all the fans off in the tick box I get no fans message, Think I'm getting tired, Will carry on with calibration tomorrow. Thank you for your help. would'nt have got there without it.

@dave-parry No Its back giving the error.
What commands do I need to reduce the sensitivity?
at the moment I have

M591 D0 P3 C"e0_stop" S1 ; filament monitor connected to E0_stop
M591 D0 ; display filament sensor parameters for extruder drive 0

@dave-parry That seems to have cured it. Increased current to 1000mA.
Guess its the slight extra force required to push it through the sensor.

@dave-parry No Its still happening. The motor current is set to 750mA which is the nominal current rating. Should |I increase it slightly?

@dc42 No cant hear any skipping, will try the pressure.

@dc42 Thanks David. Yes thats the error I get (couldnt remember the wording). I'm using a bondtech extruder, would increasing the pressure help?

I keep getting random sensor errors since using PLA. It didnt happen on petg. It pauses with the message
If I cancel the message and resume it may complete or I may get the same thing again.
I'm using
M591 D0 P3 C"e0_stop" S1 ; filament monitor connected to E0_stop
M591 D0 ; display filament sensor parameters for extruder drive 0
in my config.g file and sending m591 d0 gives
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.80mm/rev, allow 60% to 160%, check printing moves every 3.0mm, version 3, mag 131 agc 58, measured sensitivity 31.06mm/rev, min 85% max 118% over 24.8mm
I assume widening the sensitivty may resolve this but what do I put into my config file?

Well it Paused the print and saved the resume state, so I guess thats a "solved" thank god ( and You).

@dave-parry Ok have changed the M591 in config.sys to the second M591 in your list
m591 D0 P3 C"e0_stop" S1 and it seems to have done the trick....
Havent tried it yet with running out of filament will try that now. Also console says no calibration data, do I need to do this, cant see anything on the dozuki that mentions it.
Anyway thank you very much for your patience. Promise next time I take the print bed off will change the cable round so the colours are correct....

@alankilian No sorry Alan, I meant I put the Gcode commands in manually and it reports V3. If I power on/off it goes back to no sensor. It does however display extruder drive 0 data in the status window. If I feed some filament it increments the correct amount.

@dave-parry Have rechecked the commands and I now get this
m591 D0
Duet3D rotating magnet filament monitor v3 on pin e0stop, enabled, sensitivity 28.80mm/rev, allow 60% to 160%, check printing moves every 3.0mm, version 3, mag 133 agc 60, no calibration data

So it is V3