On Fri, Oct 29, 2010 at 3:07 PM, Andy Pugh <a...@andypugh.fsnet.co.uk>wrote:
> On 29 October 2010 19:32, Peter C. Wallace <p...@mesanet.com> wrote: > > > The 5I23 can work with the resolver interface card (7I49) but this would > need > > firmware modifications for DC exitation like your scale uses (sine and > cosine > > signals with no carrier) > > At that point you could strip down my Arduino code to remove the PWM > generation, take off the no-longer required filter/amplifier and > simply keep the analogue sampling and arctan calculation. > Then it would simply measure 6 voltages (sin and cos for three > channels), calculate "angle" and output the results as quadrature > pulses. You could re-jig for 16-bit A to D too (I have it at 10 bits > for speed). > > Even if Chris is right that there is no interpolation, at $20 an > Arduino is a very simple way to measure 6 analogue voltages, threshold > them, and pass it to digital. > > -- > atp > > This sounds good - I will try it thanks Stuart -- dos centavos ------------------------------------------------------------------------------ Nokia and AT&T present the 2010 Calling All Innovators-North America contest Create new apps & games for the Nokia N8 for consumers in U.S. and Canada $10 million total in prizes - $4M cash, 500 devices, nearly $6M in marketing Develop with Nokia Qt SDK, Web Runtime, or Java and Publish to Ovi Store http://p.sf.net/sfu/nokia-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
