#Calibrating Demential Accuracy

31 messages · Page 1 of 1 (latest)

rain moth
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Hello everyone. I recently bought a Creality V3 ke and it is my first introduction to Klipper ever. I have had Anycubic the entire time I have been printing and I am sure you all know, they run Marlin.

So I am trying to calibrate it and I cannot figure out how to retrieve my G92 values on Mainsail/Klipper. I have been scouring the internet but have not been able to find any videos or sites that directly pertain to this.

I have looked in config files but could not find anything mentioned G92 values. Im at the point that I am starting to believe im looking for the wrong command code.

Could someone link me to a video or Klipper commands for dumbies please? I really want to learn this OS

winged vaporBOT
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Ahoi @rain moth!
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chilly horizon
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I'm not familiar with Marlin, so please explain of what the G92 values should be, or what you want to achieve

rain moth
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It is the XYZ values telling the stepper motors how far they need to go down that axis.

The picture I linked is from klipper3d.org. But as my first time on a klipper printer, I am not sure if Marlin and Klipper share the same G Codes to retrieve printer info. I have gone through config files and cannot find these values anywhere

IMG_2994.png
dire osprey
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G92 or otherwise redefining the coordinate system is not a thing in Klipper.

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If you were using it to redefine where 0 was for an axis because of endstops, set the endstop position with position_endstop on the axis needed.

rain moth
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So how would you correct something that is supposed to print at 100mm but prints either shorter or longer then the intended length? Is that just not something Klipper can do?

dire osprey
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G92 does not do that, it just redefines the axis' location to the given 0 point, relocating the software endstops.

chilly horizon
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You need to configure your stepper correctly, that you dimensions are accurate

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Your rotation_distance might be wrong

rain moth
chilly horizon
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rotation_distance:
#   Distance (in mm) that the axis travels with one full rotation of
#   the stepper motor (or final gear if gear_ratio is specified).
#   This parameter must be provided.
rain moth
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Thats why I am confused

dire osprey
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Unless you were running some hacked up version of it.

chilly horizon
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If you have here have half of the actual distance. Klipper thinks it moved e.g. 50mm instead of 100mm

dire osprey
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Oh, and I will correct something there is a G92 in Klipper, missed it because case senstive search excluded it. Acts the same as the stock Marlin, as in it's basically SET_GCODE_OFFSET

rain moth
dire osprey
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M92 is not a command in Klipper and there is no way to change rotation distance at run time.

rain moth
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Awesome thank you Spice! Sorry for not being accurate with my information.

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What do you mean “at run time”? Like while it is runningv

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?*

chilly horizon
dire osprey
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At the very least, rotation distance is a better way of dealing with it, lets you change microsteps easier since you just change the one setting and it remaths the distance each step takes.

dire osprey
rain moth
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Thank you as well Mr Yel for helping! Ive read so much that klipper is better then marlin so I wanted to look into it. I didnt realize that lingo could be so different

rain moth
dire osprey
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Given the option, I'd inspect the hardware to figure out rotation distance rather than take Marlin's step per mm.