is it like tha PIC cant accept -ve analog inputs at all????
and if i introduce say a summing amplifier and shift both signals so that they are entirely positive, will the digitisation then yield different results????
i.e., now the signals at image1 and image2 will have no negative half... the signal will be shifed above the 0 line... and i then digitise....
will i get different codes for the 2 signals then so that i build a decision program such that if i get say code A, then its right move and if i get code B then its a left movement....