On 14 May 2010 08:08, Ian W. Wright <watchma...@talktalk.net> wrote: > I understand your point about the hoses but, if you are > thinking of using a central switch, wouldn't this give a > different tripping point depending on which side of centre > you approach it from? i.e if it were a slot in a disk, the > opto would trip on one side of the slot when approaching > from one side and the other side of the slot when > approaching from the other direction....
The idea is to always use the same edge, and for home to always search in the same direction. You use a semi-circular disc or a 180 degree cam so that the system knows which initial direction to move in to find the homing area, then once it has driven off the cam or sensor it performs a standard homing routine. -- atp ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
