M92 Stepper Motor Calibration --HOW  

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David Tan
(@david-tan)
New Member

I printed 20x20 test cube and the print was off-measurement. 

On my other 3D Printer I would connect them to a Repetier server and in it there's a console that lets me send G-Code commands:

M501 (display current settings)

M92 (enter new parameter for each stepper motor)

M500 (save new parameters)

On the Prusa i3Mk3 I couldn't seem to connect it properly to Repetier. Repetier sees it (USB-to-serial port becomes available) but couldn't establish a working connection to the point I can use the console.

Please help pointing me in the right direction. I'm printing technical parts that requires some degree of accuracy: screw holes, bearing seat block and such where 0.1mm difference matters.

By the way, I think there's a way to send g-code in Prusa Slicer but that's not going to work for my purposes. I need an interactive console to let me read values of stepper motor parameters, change & save.

Thanks.

Posted : 05/04/2021 8:39 am
karl-herbert
(@karl-herbert)
Illustrious Member
Posted by: @david-tan

I printed 20x20 test cube and the print was off-measurement. 

On my other 3D Printer I would connect them to a Repetier server and in it there's a console that lets me send G-Code commands:

M501 (display current settings)

M92 (enter new parameter for each stepper motor)

M500 (save new parameters)

On the Prusa i3Mk3 I couldn't seem to connect it properly to Repetier. Repetier sees it (USB-to-serial port becomes available) but couldn't establish a working connection to the point I can use the console.

Please help pointing me in the right direction. I'm printing technical parts that requires some degree of accuracy: screw holes, bearing seat block and such where 0.1mm difference matters.

By the way, I think there's a way to send g-code in Prusa Slicer but that's not going to work for my purposes. I need an interactive console to let me read values of stepper motor parameters, change & save.

Thanks.

Hello and welcome to the Prusaforum!

With Pronterface this works quite well. Just connect the printer to your PC via USB and start Pronterface.

https://help.prusa3d.com/en/article/pronterface-and-usb-cable_2222

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 05/04/2021 2:35 pm
David Tan liked
egar
 egar
(@egar)
Trusted Member

I found this site helpful - https://weitling.info/d3p/index.php

At the top of the page you can switch between XYZ Calibration and Extruder Calibration.

Posted : 05/04/2021 2:44 pm
karl-herbert
(@karl-herbert)
Illustrious Member

And here also some small helpful tools: https://blog.prusaprinters.org/calculator_3416/

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 05/04/2021 2:50 pm
David Tan
(@david-tan)
New Member

@karl-herbert

Thanks for the reply. Though it seems promising, I have yet to try downloading & installing it on a PC --my main working machine is a Macbook-- as current version of Pronter Face doesn't support 64-bit Mac OS (Catalina). 

 

Posted : 08/04/2021 5:16 am
bobstro
(@bobstro)
Illustrious Member

FWIW - OctoPrint works well for accessing the printer console. (Also on a Mac.)

My notes and disclaimers on 3D printing and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan...
Posted : 08/04/2021 5:33 am
karl-herbert
(@karl-herbert)
Illustrious Member

@david-tan

I have set up a small Lenovo Linux laptop (64-bit) for my printers. I use it to run all applications related to the 3D printer (PrusaSlicer, python, bashscripts for Pi-Octoprint, changing/compiling/flashing firmware, etc.).

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 08/04/2021 12:35 pm
Martin_au
(@martin_au)
Reputable Member

https://www.cartesiancreations.com.au/why-you-shouldnt-calibrate-your-3d-printer/

My advice: calibrate flow/extrusion multiplier only. The default steps are correct.

Posted : 10/04/2021 12:28 am
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