Lesson4Week6.markdown

@@ -30,7 +30,7 @@ We will first mount the black and white sensor in the LEGO 9797 car. Afterwards
 
 | "Color"  | Light Sample1| Light Sample2| Light Sample3|
 | -------- | ------------ | ------------ | ------------ |
-| Black    | 39    |t     | 38           | 37           |
+| Black    | 39           | 38           | 37           |
 | White    | 57           | 59           | 57           |
 | Grey     | 55           | 56           | 54           |
 | Green    | 46           | 46           | 47           |
@@ -130,6 +130,8 @@ Our goal is to make it possible to make a line follower with just one light sens
 We are going to take inspiration from the pseudo code in: “A PID Controller For Lego Mindstorms Robots”[2].
 
 #### Results
+[![image alt text](http://img.youtube.com/vi/Qi-XYG67Eiw/0.jpg)](http://www.youtube.com/watch?v=Qi-XYG67Eiw)
+##### Video 3: Line Follower with PID controller.
 
 ```
 public class PIDCarController {