On Fri, 2008-03-07 at 14:19 -0500, [EMAIL PROTECTED] wrote: > Ian, > > I am using the basic output from HAL via a 1284 parallel printer port, > (mode 2). The stepper motor drivers are just doing the chopping to limit > current. I didn't change HAL in any way. > > The one thing you might try is to limit the acceleration. > > I was surprised when I raised the motor voltage and started missing steps. > That was not at all what I expected. I am driving a 2.5mm pitch lead screw > with 1.8 degree steppers (NEMA 14) > > Jim Combs > Lexington, Ky
Others on this list have used mass and/or fluid dampers to deal with stepper resonance problems. I wonder if a high resolution encoder and Halscope could be used to study inter-step movement at speed? Maybe running on another EMC PC? -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending) ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
