Setup sensorless homing on a V-Minion

I switched to Sensorless Homing on a V-Minion but the X-Axis moves although i run on X-Axis = driver_SGTHRS: 255
I took the Template and copied it into the printer.cfg
I checked the Klipper Documentation but can´t find a hint on where i did something wrong. I attached the printer.cfg
Any suggestions what to check?

printer.cfg15.61KB

Helge Keck•2/24/23, 12:17 PM

255 = max sensitivity

Helge Keck•2/24/23, 12:17 PM

try 90

Ccolossal-harlequin 255 = max sensitivity

sad-indigoOP•2/24/23, 1:16 PM

with 255 it should not move at all right? With 90 it runs close to the end of the X-Axis and stays there. Y-Axis runs to the back till end and comes back to the middle. X-Axis doesnt

sad-indigoOP•2/24/23, 1:17 PM

And Pos says X= 90 Y =90 Z = 10

Helge Keck•2/24/23, 1:17 PM

have you also set the correct jumpers on your mainbaord?

sad-indigoOP•2/24/23, 1:18 PM

I put them all in at first

Helge Keck•2/24/23, 1:18 PM

the sensorless homeing jumpers or jsut the ones from the ratos doku?

sad-indigoOP•2/24/23, 1:19 PM

the sensorless homing jumpers. The Ratos Doku only deescribes with endstops or did i miss something?

Helge Keck•2/24/23, 1:19 PM

yes, you must, with the jumpers, tell your mainboard on which axis you want to use sensorless homing

sad-indigoOP•2/24/23, 1:22 PM

ok so only PG6 and PG9 cause thats X and Y right? These are the only ones i want to use

Helge Keck•2/24/23, 1:23 PM

your mainboards dokumentation tells you in word and image where the jumpers are located

Helge Keck•2/24/23, 1:24 PM

you can find them on their github repo

sad-indigoOP•2/24/23, 1:24 PM

i agree but there is no direct link between these two infos. So i assume Diag0 is For Driver0 right?

Helge Keck•2/24/23, 1:25 PM

forghet the pins

Helge Keck•2/24/23, 1:25 PM

jumpers

Helge Keck•2/24/23, 1:26 PM

thats an example, not sure what board you are using

Helge Keck•2/24/23, 1:26 PM

you just need to read your mainbaord manual

sad-indigoOP•2/24/23, 1:26 PM

J16 you´re right again

read the wrong info

sad-indigoOP•2/24/23, 1:33 PM

ok so used J16 and J17 which should be the Jumpers for Driver0 and Driver1 which are X and Y but still the same issue

HHotzenplotz ok so used J16 and J17 which should be the Jumpers for Driver0 and Driver1 which...

Helge Keck•2/24/23, 1:34 PM

you need to find the corect value, mostly its between 70 and 90 ish

Helge Keck•2/24/23, 1:34 PM

if it still doesnt work then something is blocking it

sad-indigoOP•2/24/23, 1:35 PM

https://www.klipper3d.org/TMC_Drivers.html#configure-printercfg-for-sensorless-homing I used this Docu and i assumed with 255 it should not move at all. Well right now with 255 the x-axis is running to the right and stays there.

HHotzenplotz https://www.klipper3d.org/TMC_Drivers.html#configure-printercfg-for-sensorless-h...

Helge Keck•2/24/23, 1:36 PM

255 = highes sensibility, thats why it doesnt move to the lef tside

Helge Keck•2/24/23, 1:36 PM

it tihnks it already had reached the endstop

Ccolossal-harlequin it tihnks it already had reached the endstop

sad-indigoOP•2/24/23, 1:37 PM

so it moves to the right and stays there because he thinks he is at the endstop?

HHotzenplotz so it moves to the right and stays there because he thinks he is at the endstop?

Helge Keck•2/24/23, 1:38 PM

normaly it moves to the left, and then back to the center, but with 255 it doesnt move to the left bc its to sensitiv

Helge Keck•2/24/23, 1:38 PM

lower that value

sad-indigoOP•2/24/23, 1:38 PM

ok understood. i give it a try

sad-indigoOP•2/24/23, 1:41 PM

you´re right

it went to the left and back to the middle and Y-Axis went back and came back forth... Thanks a lot for your patience. Last thin now is to get the nozzle to the middle of the Bed. cause right now it is to the right like 20mm.

sad-indigoOP•2/24/23, 1:45 PM

sorry to bother you again. I need to adjust position_min on X and Y stepper till the nozzle sits at bottom left corner right?

Helge Keck•2/24/23, 1:48 PM

adjust position_endstop

sad-indigoOP•2/24/23, 2:09 PM

sorry i don´t get it. Let´s take x-axis. I have a psoition_endstop. In my understanding this is the point where the endstop for x is and therefore defines a endpoint of the rail which can be outside of the bed right? So the position_min should be the 0 on the bed right? If i have -12 for the endstop x-axis is homed at 84 instead of 90.

Helge Keck•2/24/23, 2:10 PM

then use -6

Helge Keck•2/24/23, 2:10 PM

thats mmilimeters, you know

sad-indigoOP•2/24/23, 2:13 PM

i thought that pos_min and max defines the bed and with the endstop i just define the max allowed travel. so pos_min0 pos_max 180 would be for the minion and pos_endstop would be for example -12 cause thats the maximum travel. I assume i am wrong on that

Helge Keck•2/24/23, 2:14 PM

no, its not the bed dimension, its the endstop position, in your case 6mm from the left side of your bed, -6

Helge Keck•2/24/23, 2:14 PM

jsut try it, it works

sad-indigoOP•2/24/23, 2:29 PM

ok so now the nozzle is centered on the bed with these values
[stepper_x]
position_min: -10
position_max: 170
position_endstop: -3

[stepper_y]
position_min: -20
position_max: 168
position_endstop: -14

and Toolhead absolute Position is at x=85 and y=84

Helge Keck•2/24/23, 2:30 PM

dont change position_max values

Helge Keck•2/24/23, 2:30 PM

you are loosing print area this way

Helge Keck•2/24/23, 2:31 PM

set it to 180

sad-indigoOP•2/24/23, 2:43 PM

ok done thanks. So position_min: -5 has to be adjusted to be able to enter a value for pos_endstop right? so if endstop has to be -5 you set pos_min to -5 right?

Helge Keck•2/24/23, 2:43 PM

yes

sad-indigoOP•2/24/23, 2:44 PM

Man thanks now i got it. Thanks for the patience

miklschmidt•2/24/23, 6:51 PM

i strongly recommend that your position_min isn't less than your position_endstop. It allows you to crash the carriage.

miklschmidt•2/24/23, 6:52 PM

Position_min = position_endstop is a good rule of thumb, you can use the coordinates below position_endstop anyway (because the "endstop" is blocking)