Hi, I am trying to use Analogs ADXL202 in a performance meter that will measure 1/4 mile times and speeds. I have the calculations done to get the G's in a factor of 0-255 for a 2G span, therefore 1G is approx 127 etc... Using this I determined that my smallest acceleration readable is approx 0.2523 ft/sec^2, or 8mG. I have to multiply this number by 0-255 to get my current acceleration, then I have to use D=0.5*A*T*T* to get distance, and add it up till it is 1320ft(1/4mile) and use V=D*T, where T is going to be 10mS, does anyone know how to do this? Should I try to use floating points numbers, or a scaling factor of somekind? If anyone one has made a unit of this type, any info would be greatly appreciated. Thanks Jay