Delta with virtual endstop

General Discussion
1

Basic Information:

Printer Model: FLsun super racer
MCU / Printerboard: skr3ez
Host / SBC: pi3b+
klippy.log

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Describe your issue:

I coverted my flsun sr to klipper. All works except the function to measure the bed-height.

On a coreXY i could use probe:z_virtual_endstop. If for example the pei sheet is 1 or 2mm thick, this doesn’t matter, the probe will correct it.

But on a Delta de z-endstop is in the top. How can i measure where the bed is? Of example, when the pei sheet is 1mm thick, after probe it correct the height. Then change the pei sheet to 2mm and probe again. And then it correct it automatically, to prevent the nozzle going into the sheet.

…

2

Have you had a look at the docs? Delta calibration - Klipper documentation

3

I followed the documentation.

But i don’t want to do the paper test every time, when to pei thickness changes. On a coreXY that isn’t necessary. But can’t find the solution for it on a Delta. Even in the documentation i can’t find it what i am looking for

4

As far as I understand, normally you should not, because you have the probe for this task.
So, as long as you do bed mesh before print, it should work.

Otherwise, one can use a hack from here: Eddy Current Inductive probe - Klipper documentation

You need a recent Klipper for this version to work.

Basically, all that it does is set Z to the probe data, that is it.

Hope that helps,
-Timofey

5

Thanks Timofey,

I didn’t tried the bed mesh, all the focus was on setting the height with the probe. Bed mesh was not the first i thoughed about. Will give that a go.

Also the hack sounds like a good option.

Thanks for your effort.

6

I tested the eddy hack.
That also worked for me, for what i was looking for.
Now i can home with the endstops in top. And after homing it measures the distance from probe to bed and sets that as new Z-height. Great, again thanks