Lesson8.md

@@ -363,19 +363,19 @@ All in all we are satisfied with the work done during this lab-week, but disappo
 
 [24] [API of DifferentialPilot(http://www.lejos.org/nxt/nxj/api/lejos/robotics/navigation/DifferentialPilot.html)
 
-[25] [Video 1]()
+[25] [Video 1](https://www.youtube.com/watch?v=BOtnwWpyBlk)
 
-[26] [Video 2]()
+[26] [Video 2](https://www.youtube.com/watch?v=On_NV-g9-js)
 
-[27] [Video 3]()
+[27] [Video 3](https://www.youtube.com/watch?v=Use9_ANpYOA)
 
-[28] [Video 4]()
+[28] [Video 4](https://www.youtube.com/watch?v=B-lPjFO3Bh0)
 
-[29] [Video 5]()
+[29] [Video 5](https://www.youtube.com/watch?v=w5JwM_dEYVQ)
 
-[30] [Video 6]()
+[30] [Video 6](https://www.youtube.com/watch?v=EdtbRaXm6NA)
 
-[TODO Video ref]
+[30] [Video 7](https://www.youtube.com/watch?v=LqK0Zw65I-c)
 
 ## **Appendix A: Unconstrained idea generation**