Hi .I use AD2S83 as the turning angle indicator. DATA OUT connect to STM32F100 discovery board.
dataout in indicator don't correlate with rotate angle. example - presented 11,02 degrees, I very small turn a shaft - indicates 320,22 again small turn - indicates 43,78. why detected value of an angle pozition into AD2S83.
sensor - ДСК-1 (DSK-1) - sin cosine rotate transformator