@jay_s_uk ah, no. Those are values generated by RRF configurator, will adjust those values.

That was my mistake, Q1 is what was missing in both cases.

My Plan as of right now is to reorder the board, then mount it higher on the printer and recalibrate the target sensing distance. Then as I am waiting on it to be delivered I was going to go through the wiring with my meter. I unfortunately didn't build this printer, and the person who did no longer works here. He also didn't leave any specs for it so I am flying a little blind.

@o_lampe on the first board there was silicone on the board, that was the bored that went bad after a power surge. My main question is if you guys think I should keep with the IR bored or just cut my losses and buy a bl touch.

That was my mistake, Q1 is what was missing in both cases.

@Veti here is a picture of the bored itself,

C1 was gone in both cases, this time the diode was gone.

@Veti The plate doesn't get that hot, the bored itself is mounted to a piece of poly tooling bored so there isn't a lot of heat transfer between the sensor and the plate.

Here is where the probe is.

Running carbon filled abs, at 270c hotend, 110c build plate (doesn't get up to temp well, average around 95c-103c.

The printer is inside of a pop up canopy with walls because of size

Hello all,

I have a large format cartesian printer that I inherited at work. I was not the one who built this printer, so I was more just going along with what was there. Last week on a print that was running overnight, I came in the next morning and the printer had stopped and had kicked the surge protector. When I started it back up the Z probe was broken, the IR receiver C1 was just gone. I ordered a new one and put it on yesterday and aside from the print bed having weird spikes ( the signal wire was getting interference) it ran fine, and started printing another overnight part. This morning I came in and the printer was ruunning, however it was printing air as it had an error that no tool was selected, and after investigation the IR probe was broken again C1 and D1 gone.

Now my question is, is this an issue from a power surge? is it just that the IR Probe is just not for my application? Would it be a bad Idea to switch to a bl touch? Any help would be greatly appreciated.

Thanks,
T

It looks like the S value in the M671 was the issue. I didn't have it specified, so it defaulted too small. I'm not sure why it is in config.g, that is just where the guide i was using Bed levelling using multiple independent Z motors said to put it.

I will add that secondary homing to bed.g and go from there. Thank you for your help!

Thanks,
T

As well as the probe offset is in config.g

Here is my new Bed.g,

; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v3.2.2 on Fri Jan 22 2021 11:13:01 GMT-0600 (Central Standard Time)
M561 ; clear any bed transform

G28 ; home

G30 P0 X0 Y450 Z-99999 					; probe near a leadscrew, half way along Y axis
G30 P1 X1170 Y450 Z-99999 S2		 ; probe near a leadscrew and calibrate 2 motors

The M671 command is in my config.g like the guide had said, however I didn't have an S value there. I will add that and see what it does.