> >I'm not familiar with dsPICs, but DSP often does not much > >good for floating point calculations; they have a lot of > >power for integer array calculations, though. > > Which is what I suspect the OP will really need anyway. As has been > discussed many times on this list, when dealing with sensors it is not > really floating point that is required, but a wider integer, possibly > representing a fixed point value. IIRC the DSP engine is 40 bits wide. > _I_ realize I can do the math without floating point, but that's not realy the issue. This will never be a production product so an extra $10 for a bigger proccessor is a total non-issue. But mechanical engineers (cough - spit :-) will have to be able to understand what's going on and be able to modify the algorithm. Floating point makes that a LOT easier. -Denny -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist