2015-11-17 21:54 GMT+02:00 John Kasunich <jmkasun...@fastmail.fm>: > Just divide the steps per mm for X in half, and send the X steps to both > gantry and pipe chuck motors using HAL. Also send X direction to both > motors, and invert one so they travel in opposite directions. Use HAL > logic (in the base thread) to turn off steps to each motor when that motor > hits its home switch (only while homing), and to send a composite home > switch signal to LinuxCNC when both motors have hit their home switches.
Why not to treat the chuck motor as another joint of X axis? There already are 2 of them (on the gantry), so adding 3rd should be straightforward - that allows homing the chuck to its own switch without any additional hassle in HAL or whatever. Viesturs ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
