 #define MAGS 4
 #define RPM_AVG 5
 #define HALL P1_5
-#define QUESTION P1_4
 
 #define SHIFT_OFFSET 10
 

    average += rps[idx];

  // calculate RPM from the RPS moving average
  average *= 60;
  average /= RPM_AVG;
  average /= MAGS;

  // reset mag_count for the next pass


  // pull up to start
  pinMode(HALL, INPUT_PULLUP);

  // initialize variables
  switched = 0;
