CR Touch Does Nothing (Can't find similar issue discussed elsewhere)

General Discussion
1

Printer Model: Ender 5 Plus
MCU / Printerboard: BTT SKR Mini E3 V3
Host / SBC: Sonic Pad
klippy.log (12.9 KB)

I have searched and searched and searched and can not find anything relating to my specific problem, so I guess I must make the topic myself.

I recently installed the SKR Mini E3 V3 on my Ender 5 Plus. So far I’ve managed to troubleshoot issues as they arise. I got it to work with my Sonic Pad, it can home X and Y, but I can not get it to home Z. At first the plate wouldn’t move at all and I got the “BLTouch failed to verify sensor state” error. I managed to fix that through my config, so the plate starts to rise. The problem now is that my CR Touch will not do anything. There are no error messages. It sits there with a solid red light.

It will run the self check when I turn it on, raising and lowering the probe a couple times, but after that nothing.

When I try to home, it does not deploy the probe. The plate will rise indefinitely unless I power off the printer to make it stop.

It doesn’t move when I use BLTOUCH_DEBUG COMMAND=pin_down.

It does return results when I run QUERY_PROBE. Typically it returns “open.” I have also let the bed rise close enough to touch the probe when powering on, which leads to a QUERY_PROBE response “triggered” and I get the flashing red light instead of the usual solid light, though moving the plate down and turning the printer off/on gets me back to the solid red light. Before powering down while triggered and flashing it did not respond to BLTOUCH_DEBUG COMMAND=reset either (nor does it seem to do anything with that command any other time).

I’ve checked my wiring, everything is where it’s supposed to be. I’ve accounted for the missing “^” in the pin mapping in my config. I checked that I have the V3.0 and not the V3.0.1. I don’t think the probe is bent, I have been using this printer for several months as stock with no issues at all from the CR Touch or anything else for that matter. I can not figure out where else to look. The only thing left that I can think to check is that the BTT firmware simply doesn’t work with the CR Touch, though I lack the computer prowess to dig into firmware to check – understanding the config file was already pushing my knowledge.

Any guidance is greatly appreciated.

2

It appears you are running a Sonic Pad:

I do assume that this is not the complete klippy.log.

Isn’t it Klipper you are running?

3

I’m running the klipper firmware from the BTT github
BIGTREETECH-SKR-mini-E3/firmware/V3.0/Klipper at master · bigtreetech/BIGTREETECH-SKR-mini-E3 · GitHub

As far as the klippy.log goes, this is what I get when I download it from the Sonic Pad web interface :man_shrugging: I wouldn’t know if it is missing anything, though after reading the page you linked to I guess it probably is incomplete per the Sonic Pad.

Also after reading that page, is the issue then going to simply be that I’m using a Sonic Pad?

4

Usually the klippy.log (even the one by the Sonic Pad) includes the printer.cfg.
This is missing the klippy.log you posted.

5

printer.cfg (6.2 KB)

6

Maybe the sample_retract_dist default value of 2mm is not enough.

7

Doesn’t sample_retract_dist affect the lowering of the plate between probes? I can’t get the probe to deploy, much less actually trigger and sample multiple times.

8

Is the probe mounted too low?

9

Probe is mounted where it has been mounted since I got the printer, and it worked fine before. It just won’t do anything.

10

Turns out, while I had all the wiring in the right place, the plastic 3 pin connector was keeping the wires from making complete contact with the board. A bit of a cheap solution, but I pulled the wires from the connector, wrapped them with some electrical tape, and plugged them in individually. Now my printer finally homes the Z-axis.

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