Kirk, A couple comments. You have the visible LED's in series with the LED's in the optoisolators. The threshold voltage of both LED's when on comes real close to the 5V from the driver chips. It probably works, but doesn't leave any margin. Would be better to route the visible LED's to ground through separate resistors.
Also, have you thought about adding additional DAC's? As you already have the isolation and power supplies, it would be easy to add 3 more DAC's. (D_out of U3 to D_in of the next DAC...) This would give a simple board that would control 3 servos as well as a spindle. Fred --- Kirk Wallace <[EMAIL PROTECTED]> wrote: > I'm getting close to sending my layout to a board > house. If anyone wants > to give it a sanity check, I'd sure appreciate it. > See the bottom of the > page here: > > http://www.wallacecompany.com/machine_shop/EMC2/serial_dac/ > > My Eagle file links are at the very bottom. I'm > hoping to find a house > that accepts Eagle directly. > > -- > 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 > ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ ------------------------------------------------------------------------- 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
