Sensorless homing won't trigger

General Discussion
1

Basic Information:

Printer Model: Voron 2.4 awd
MCU / Printerboard: 2x Octopus v1.1 using external 48v tmc5160 for x and y drive motors
Host / SBC BTT PI
running Kalico Klipper and also I have TMC autotune installed

Hi I’m quite new to this and have been trying to set up sensorless homing on my printer, at the moment I have gotten it to either retract and give me the message “endstop still triggered after retract” at both min and max SGT sensivity or when I invert the diag pin it will move in the correct direction and then crash at the where the endstop should be no matter the sensitivity I set it at.
Any help is greatly appreciatted.

Many thanks

Nicholas

here are some images of the mainboard for the drive motors and the diag pin jumpers

20250721_120923
20250721_1209231591×1565 263 KB

klippy.log (902.5 KB)

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2

i solved it, the endstop pin was diag1_pin, I changed it to diag0_pin and that seems to have worked

3

Welcome Nc1109,

I wanted to answer, but you were quicker :grin:

Congrats. What SGT value are you using right now? Just curious.

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4

at the moment both x and y are set to 1, 2 makes them crash and doesn’t detect and 0 has triggers when it isn’t touching the gantry so only 1 works.

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5

Amazingly how sensitive some TMCs are. A span of 3 from 128 values? I wonder, if we shouldn’t ask an FAE from ADI for some help. Maybe there is a way to make the drivers more sensitive. I think, “Ed’s 3d Tech” videos are always pretty good. He mentiones a similar behaviour https://www.youtube.com/watch?app=desktop&v=9E-sCKlTMHk.

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