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gnea / grbl

An open source, embedded, high performance g-code-parser and CNC milling controller written in optimized C that will run on a straight Arduino
https://github.com/gnea/grbl/wiki
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CoreXY Kinematics Homing Y Axis only one motor #823

Open m4rl0ne opened 4 years ago

m4rl0ne commented 4 years ago

This is not an issue. Can someone point me in the right direction: I have enabled CoreXY kinematics in the latest GRBL. When I home the X Axis it works fine but when I home the Y Axis I only want the B Motor to turn, not both at the same time, otherwise it would be the normal homing routine, just with only one motor turning. I understand that this is not how CoreXY Kinematics work but I need this exact behavior for a special project. Sadly, I do not understand much about the planner or the limits.c file. I hope you got my point and thank you very much in advance.

Pixel-Soup commented 4 years ago

If only the b motor turns, the head will move at a 45 degree angle from the current position until the x or y limit switch gets triggered. The head will end up at some random location. Are you sure this is what you want?

m4rl0ne commented 4 years ago

Yes this is exactly what I want since it's not a traditional CoreXY system I'm building but the kinematics are the same except for the one part of the homing routine