go to 100% of rated current, noise is normal for steppers, squeels can be the switching rate, I use a switchmode supply but it is a commercial Llambda one not a cheapo (got a freebee) I agree add 4700uf to help on cheaper supplies. A two start screw will need some torque to drive do you have gearing between the motors and screws
Dave Caroline ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users