Lesson4Week6.markdown

@@ -149,6 +149,10 @@ public class PIDCarController {
 	int error = 0;
 	int turn;
 
+        // Calibrate the black/white threshold
+        sensor.calibrate();
+	offset = sensor.blackWhiteThreshold();
+	 
         LCD.clear();
         LCD.drawString("Light: ", 0, 2);
         LCD.drawString("Error: ", 0, 3);