Source
r/klippers•
Cyborgalienbear

BLTouch on ender 5 suddendly not working

After almost a year of printing with the same klipper config on my ender 5 my BLTouch suddenly stopped working.

At first I assumed some of the wiring might have disconnected due to vibration and movement so I redid all the wiring.

To be precise, the BLTouch still lights up in red and does the double probe down on power up. The problem is when I home Z, there is a small blue light that flashes once on the BLTouch and I get an error "BLTouch failed to verify sensor state".

I tried to use "pin_up_touch_mode_reports_triggered: False" as recommended and it does allow the probe to go down, but it doesnt trigger when the bed hits it so the bed crashes into the extruder.

I have spent a few hours on this now and I'm really out of ideas.. i cant imagine not having a BLtouch anymore.

Posted Mar 21, 2021, 5:36 PM UTC

19
O_to_the_o•

Have you updated klipper recently ?

1
CyborgalienbearOP•

I tried a few weeks ago but I got an error message. I could still print after though

1
benworks•

As mentioned have you updated Klipper? Not sure if any breaking changes for BLtouch have been added recently though.

What version is your Bltouch? what control board are you using?

1
CyborgalienbearOP•

I have bltouch 3.1 and i tried to update Klipper like 2 months ago but I had an error code in Octoprint saying that it couldnt update klipper. Printer worked fine for weeks after that. I have the Ender 5 Silent Board

1
HyperionConstruct•

Is the pin knocked. Pull it out gently and straight. Then try rebooting.

1
CyborgalienbearOP•

Yeah actually it's crooked I just noticed.. I straightened it but it still does the same thing. I hit home all, it does x and y, and when it comes to z instead of the probe going down the small blue led on the side of the bltouch flashes once and I get the error message on octoprint

1
HyperionConstruct•

You should have got a spare, but I've not had to change mine yet.

1
CyborgalienbearOP•

are you talking about the whole bltouch or just the probe ?

1
jjgraph1x•

The probe pin... official BLTouch typically come included with a spare.

1