Update to the update. I found out what was wrong. Stupid me remove the X endstop wire to the duet and when I re-installed it I put it on the Z. After I moved the wire its good again. Just goes to show you always check you work over and over.......

Well I re-ran the autotune again and updated the PID numbers. So far its working.

Hello all, I have a question, I just finished wiring up my Maestro to my Ender 3 Pro. Everything want great, but when I go to heat the bed I get this "Error: Heater 0 fault: temperature rising much more slowly than the expected 1.7°C/sec". Now I have run this autotune for the bed and it gives me this "M307 h0
Heater 0 model: heating rate 0.318, cooling time constant 571.4, dead time 3.40, max PWM 1.00, calibration voltage 24.1, mode PID
Computed PID parameters: setpoint change: P165.0, I3.741, D393.0, load change: P165.0, I11.813, D393.0". Which I added to my M307 H0 line in the config.g file.

I am not sure why I get the fault when trying to test the bed. Anyone out there have any ideas? I am planing on replacing the bed my a new heater and a Mic6 plate soon but in the mean time I would like to get it working.

Update to the update. I found out what was wrong. Stupid me remove the X endstop wire to the duet and when I re-installed it I put it on the Z. After I moved the wire its good again. Just goes to show you always check you work over and over.......

Update, if I remove the X endstop wiring the light goes out but the duet thinks is still triggered with nothing attached.

Hello all, I have an issue with my X endstop. I am using optical endstop on both X & Y. Now both endstop where working great. I took apart my hotend to change it over to direct drive. After installing the hotend again my X endstop is not working correctly. For an FYI my printer is a CoryXY and my X optical endstop is on the hotend mount. Now here is the problem, the duet 2 WiFi board shows that the endstop is triggered all the time. The light on the board is lit up and if I manually trigger the X endstop the light goes out. So I know that the endstop is working, but the duet says it’s triggered. I did not change my config file (endstop settings). I tried an old micro switch and that activates the light just like the optical endstop, but the duet still says it’s triggered all the time. Anybody have any ideas of how to fix this I’m completely stumped. Please let me know because I am stumped. Thank you

I caulking it up to a hiccup in the firmware since it worked before and now working again. Thank you for the reply.

So I have a custom built coreXY printer. I use 2 optical endstops, on the X & Y. Everything was working great, until I replaced my thermistor. After that I have an issue with my X endstop. The Duet 2 wifi says it's trigger(web site), but the light on board is red. Now if I stick something in to the optical endstop the red light goes out. So the endstop work, but the duet thinks it's always triggered. I checked the wiring and the endstop. I know they can run on 2.7 to 5.5 volts and the Y endstop still works fine. Any ideas on how to fix this?

Ok quick update: Not sure what I did but I changed my X endstop from the X to Z and then back to the X and now its working again. Not sure why, but I will take it.....