2009/10/6 Ian W. Wright <watchma...@talktalk.net>: > One reason for considering this is that, on my > previous machine, I had a problem with the Z-axis stepper > picking up interference from brushed spindle motors
If you really had enough energy coupling from the spindle motor wires to the stepper wires to create false steps then something really quite scary was going on. The several amps at several volts that flows in the stepper motor cables should be immune to all interference short of a nuclear EMP, whereas the logic-level signals are very easily swamped by RFI (see the discussions on pull-ups in the encoder thread) I am no expert, and we do seem to have one who will probably give you chapter and verse later in the day, but I would say that moving the drivers to the motors was quite a bad idea. -- atp ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
