APA102 is a type ic for the three-color White Diming control strip
and string ,This ic using the CMOS process to provide three- color White
LED output driver to adjust the output with 256 gray scale and 32 brightness
adjustment ,APA with 2 signal output way , one is clock ,another is data,
the clock and data is synchronizated ,so that the crystal cascade piece of output
movement is sychronizated .