On Sat, 2008-06-07 at 13:32 -0700, Kirk Wallace wrote: ... snip > I can certainly try, but I am using the latest 2.2.5 which should be > fixed. I have pwmdir set true. I measured only logic levels on the dir > pin and analog on the PWM pin. The no load forward and reverse RPM > through the range (0 to 5500) was within 50 RPM. >
These are a little embarrassing, but here are some pictures of my Pico/Pluto setup: http://www.wallacecompany.com/machine_shop/Pluto/ The cores of the inductors seem to be heating and not the copper, so it takes a while for the heat to be detected. It seems that one or the other inductor heats up dependent on direction of the motor rotation. I seem to get no heating at zero speed and have only done brief testing up to 30% speed. The upper trace is the PWM signal at the amp connector. The lower trace is the direction signal at the amp connector. -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC/EMC CNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending Craftsman AA 109 restoration Shizuoka ST-N/EMC CNC) ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
