// X = Y2 / (1023^2/255).
// Y is ADC value, X is the result between zero and 255. (1023 is for a 8bit ADC)

int i;
float b, y;

void setup() 
{
Serial.begin(115200);
}

void loop() 
{
  b = 0;

  for(i=0;i<=19;i++)
  {
    b = b + analogRead(A1);     // Yaw
    delay(1);
  } 

  b = b/20;

  if(b>517)
    y = pow(map(b,517,980,0,100),2)/(10000/7);
	  
  else
    y = pow(map(b,516,52,0,100),2)/(10000/-7);

  Serial.println(y);
}