@infiniteloop rewired endstop for separate 3v from duet board same day. Had no issues till yesterday. After powercycle, started to work again. This morning still no issue. Can't get it why it happens.

Hey there.

I'm having some weird Duet 2 wifi behaviour with diy Z-probe and need your help. My diy z-probe is servo and ir-sensor with flag, so-called BFPTouch. Servo works just fine. But IR sensor ports fail often. I've tried
zprobe.in, after some time z-probe was always read as triggered, I've switched to ext.29, same thing, works for a time and fail. It worked quite a lot, for a few months. Now set it to exp.39 yesterday, printed about 9 hours. Today I've tried to run printer again and bum, same error. Sensor and servo power in parallel and it is 5V. Other than that, my old bu trusty Duet works just fine. I cant get what causes it. It can work for months, and can work just for few days on that port.

; Z-Probe
M307 H7 A-1 C-1 D-1 ; Disable Heater 7
M574 Z1 S2 ; Set endstops controlled by probe
M950 S7 C"^exp.heater7"
M558 P5 C"^exp.39" H5 F360:120 T6000 ; Set Z probe type to switch and the dive height + speeds
G31 P600 X0 Y80 Z1.000 ; Set Z probe trigger value, offset and trigger height
M557 X10:300 Y10:300 S40 ; Define mesh grid

Ok, disconnected cap and now it starts fine. Where should I place it to make everything work as expected? Directly to board power input terminals?

@dc42 just finished printing part. Rebooted board, dont have this message now, changed nothing.
Cap parallel to ssr control pads, I'd say connecting ps_on and 5V (my ssr doesnt work on 3.3v). Cap is huge, the only I had at hand - 2200uf 25v.

Hey, everyone.

Having strange issue and I need your advice to get direction.
My duet2 wifi powers from 24V psu. It also connected to ssr, controlling that psu via PS_ON pin. I've added capacitor on ssr control pins, to keep it closed to be able to reset board from DWC. Without cap, board releases ssr and everything turns off. It was working great. I have 2 Z motors on Z driver and Z probe.
Now, I took off Z probe, switched one Z motor to second driver (E1), added 2 optical endstops, changed config. It works as expected except for one thing - on initial launch, board doesnt fully load. Paneldue doesnt show any info like it haven't connected to board, no led flashed on wifi module. Only endstop's leds and voltage leds(all 3) are on. Pressing reset button on board makes it run correctly.
Also, message on paneldue after reset shows "VIN overvoltage 32.6V", but psu is still the same and shows 24.2V (DWC shows 24.3-24.4).
What can be the reason for this?
Config attached.
config.g

@phaedrux thanks, will try than

@phaedrux Actually, I dont know. I left it print overnight. Looking at where is skipped, it's about half time,~6hours. It was thin, but high model.
I had another long time print and skipping happened also. It actually looked like not just skipped step, but ~100mm momentary drift on X axis. it happened ~10hours after print start.
First time belts were tight, last time I've loosen them a bit.

@dc42 it doesnt have rear most wall, so duet isnt in closed box.

@jay_s_uk I have 5015 turbine blowing non-stop on radiators, glued on top of drivers

@jay_s_uk Blurolls 17HM19-2004S, came with my blv kit.