QtPlasmaC + CoreXY Kinematics

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9 months 2 weeks ago #341254 by deckname
Hi everyone, i´m new here.I’m having major issues getting my LinuxCNC setup to work with QtPlasmaC and CoreXY kinematics.My setup:
  • LinuxCNC 2.9.6
  • Mesa 7i96s Ethernet + 3 steppers (X, Y, Z)
  • QtPlasmaC GUI
  • CoreXY kinematics (tried corexykins and corexy_by_hal)
QtPlasmaC seems to try to access pins and signals that don’t exist with CoreXY kinematics.
I had previously tried running the machine with SCARA kinematics, but I naively thought CoreXY would be simpler.

Is a setup like this possible for a beginner or should i try a different approach?
Why are kinematics that complicated and troublesome anyways?

Thanks in advance for any help!

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9 months 2 weeks ago #341255 by tommylight
That will most probably require a bit more hand editing as you also need to have some of the contents of 3joint_xyz.hal, but i do not recall exactly what or how, it was a long time ago since i used this.
Did you try changing the kinematics in the in file to
KINEMATICS = corexykins
And did that produce any result?
But first, does the machine have home/limit switches on X and Y ? That is a must.

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9 months 2 weeks ago #341261 by deckname
Thanks for the reply
I tried corexykins, didn´t work because i use uspace?
so i went with KINEMATICS = corexy, which then caused problems with loadrt [KINS]KINEMATICS and loadrt [EMCMOT]EMCMOT...
Why are home switches necessary? I dont have the machine connected at the moment since I´m only trying to get the software to start.

Is this combination of software even the right choice?
I´m building a small portable plasma cutter while using some parts of an old 3d printer and i would really like to use corexy.
Are there other GUIs that work better with this?

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9 months 2 weeks ago #341288 by deckname
I´m sorry, i think i mixed something up.
KINEMATICS = corexykins actually works.
might have been the home switches...

Thanks again

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9 months 2 weeks ago #341299 by tommylight
You are welcomed, always, and thank you for reporting back, i am building a small 10W laser with spare parts from a Creality CR-30 (the whole gantry as it is very sturdy and uses 10mm wide belts tightened to breaking point! :) ) so i will need corexy to work, again.

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