Calibrating Y and Y2 independently

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03 Mar 2021 20:37 #200938 by Creative25
I am planning to build a cnc plasma cutter that uses stationary chains and moving Sprockets, for x and y axles.
Since Chanis do not always have the same length I want to be able to calibrate the movement for Y and Y2 separateley.
However on the PnCC config it only asks for data for Y axle.

How will I be able to calibrate the two axles separateley in oder to compensate for differences in chain length?
Can I have separate compensation files for each axle. Y Y2 or is there another way?

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03 Mar 2021 21:30 #200944 by PCW
Certainly possible by editing the hal/ini files by hand to enter the different scale values

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04 Mar 2021 08:48 #201001 by Creative25
I checked the ini file it looks quite simple to change those settings. Question how many decimal points can I enter in the scale values? Is there info on this forum on a build that is chain driven or Would it be helpful if I start a new thread?

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04 Mar 2021 13:33 #201019 by andypugh

Question how many decimal points can I enter in the scale values?


You can enter as many as you want, but after 15 or so they will have no further effect.

In practice anything more than 5 or 6 will have no effect considering the typical range of encoder counts from one end of the axis to the other.
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