@dieguito nice that you found the solution and told me. Thanks!
My impression is that I have to add checking for connection problems and electrical interference to my first-to-check list, when endstops, BLtouch etc. don't function correctly.
Ok never mind the resistors, I’ll try that out later but I just ordered another probe that is a npn swapped it out. It works just had to fix a couple wiring issues but anyone out there wanting to use a inductive sensor make sure it’s a npn inductive sensor, also the sensor works with the 3.3v power in the io5 pin and didn’t need to wire it to the vin or 12v. I have the brown going to 3.3v, the blue going to ground and the black going to “io5.in”. Well thanks for the help problem solved.👍
Ok not sure what the error was but it seems to work now. I formated the SD and unpacked the files from the Git into it. Then I installed the update to 3.1.1 again an uploaded a fresh firmware from the fw generator. No idea what went wrong before.
For future reference, under RRF3 the M305 command needs to be replaced with M308.
This is from my machine where I have a thermister connected to the second extruder (E1) thermister connector. The A term is the name of the sensor that appears in the extras list. The S value should be between 0 and 31 for a Duet 2.
A leadscrew with a 2mm pitch will help you in more ways than one, if you use a 2mm pitch you can utilise a full step number at multiple layer heights. And the added bonus is that the bed won't drop, the price of leadscrews means its a very cheap (but extremely worthwhile) upgrade
I plan to power the Pi and a display from the Duet.
Be cautious with this. It looks like you're using a Pi3b which may be ok provided the draw from the display is also low, but there have been some issues with the Pi4 which draws more power. Using a separate supply for the pi+peripheral side may prove more reliable.
We have 15+ of the existing prototypes, which we will be giving away to interested OEMs and users when we have some firmware ready. We'll probably give priority to those who can contribute to the control algorithm firmware. There will be no support for these boards once the pre-productions boards using the different MCU and the associated firmware are ready.
The temperature you turn it on is up to you. I have mine set to 45C; hot enough that the fan isn’t on when machine is idle, cold enough that it turns on early when hot end is turned on.