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Lesson-2.markdown

@@ -57,3 +57,13 @@ The variables in the system is as follows
 * Setpoint variable (SP) = **desiredDistance** 
 * Process variable (PV) = **distance**
 * Manipulated variable (MV) = **power**
+
+### Exercise 5
+
+<a href="http://www.youtube.com/watch?feature=player_embedded&v=FSDBoUJO2es
+" target="_blank"><img src="http://img.youtube.com/vi/FSDBoUJO2es/0.jpg" 
+alt="IMAGE ALT TEXT HERE" width="240" height="180" border="10" /></a>
+
+
+
+### Exercise 6
\ No newline at end of file