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Need help with calibrating xyz steps on a borlee/reprap

Posted by mattjk 
Need help with calibrating xyz steps on a borlee/reprap
May 26, 2016 10:18PM
I got the printer up and running, but I need to calibrate the xyz steps.

If I move 100mm, it comes to 103mm

Do I need to modify the firmware with arduino, or can I modify the g:code in Slic3r?

The company seems to have stopped selling this model printer, so I don't have a copy of the firmware to modify.

It has a Melzi V03 board.

Thanks
Re: Need help with calibrating xyz steps on a borlee/reprap
May 26, 2016 10:49PM
I have never used a Melzi board before, but if you have a LCD display you might be able to change it there or via gcode if EEPROM is enabled?

To change the steps is quite easy, just a rule of 3 is needed, current value X 100/103 set the new value via display or gcode and save via m500
Re: Need help with calibrating xyz steps on a borlee/reprap
May 26, 2016 11:14PM
Quote
ggherbaz
I have never used a Melzi board before, but if you have a LCD display you might be able to change it there or via gcode if EEPROM is enabled?

To change the steps is quite easy, just a rule of 3 is needed, current value X 100/103 set the new value via display or gcode and save via m500

Thank you for your reply.

I do not have the LCD panel, unfortunately.

I will try the gcode, thanks!
Re: Need help with calibrating xyz steps on a borlee/reprap
May 26, 2016 11:16PM
P.S. If all else fails, would it be ok just to scale down my prints slightly?
Re: Need help with calibrating xyz steps on a borlee/reprap
May 26, 2016 11:49PM
Yes you can, is not the better choice but is doable.
Re: Need help with calibrating xyz steps on a borlee/reprap
May 27, 2016 12:07AM
Do a little test,

Run a m501 command and see if it return any values, should give you back XY and Z numbers, use the rule of 3 to get the new values and then do an m92 command like X (new value), Y (new value), Z (new value) and then do a m500, once done run again an m501 and see if the values were changed.

Good luck

Edited 2 time(s). Last edit at 05/27/2016 12:09AM by ggherbaz.
Re: Need help with calibrating xyz steps on a borlee/reprap
May 27, 2016 01:19AM
Quote
ggherbaz
Do a little test,

Run a m501 command and see if it return any values, should give you back XY and Z numbers, use the rule of 3 to get the new values and then do an m92 command like X (new value), Y (new value), Z (new value) and then do a m500, once done run again an m501 and see if the values were changed.

Good luck

that did the trick, thank you!!!!!!!!
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