On 11/08/2011 10:02 AM, andy pugh wrote: > On 8 November 2011 15:54, Kirk Wallace<[email protected]> wrote: > > >> I played with an AVR to get the fast PWM needed. See: >> http://wiki.linuxcnc.org/emcinfo.pl?AVR >> > Also, I am pretty sure that the Mesa and Pico boards have enough > resolution in their PWM generators to work perfectly well. > > The PWM frequency of the Pico Systems Universal PWM Controller is global for all PWM outputs. I was mainly thinking of using them to control servo amps and not other devices like spindle drives. The timing resolution on the newer units is 25 ns, which should be pretty good for most purposes. Even at the 50 KHz PWM rate we use on our servo amps, that provides 800 steps of resolution or 0.0125%
Jon ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
