Lesson5.md

@@ -36,6 +36,16 @@ We tried calibrating it up against the door (because this was the most even thin
 We turned on the light - see video
 We tried a stiber angle which worked much better - see video
 
+#### surface
+The light was on.
+The light sensor returns very different measurements of different colors, and the bathroom floor has lots of colors (see picture). Therefore we tried the big black thing which gives a completely different setting. Both the color of the surface (which is now black instead of blue-ish) and the consistency in the color (completely black instead of different blue-ish colors) and how even the surface is, as the black thing is very uneven. 
+
+We tried to use a box, to still work around the fact that our press effects the robot. But the box was making a shadow. We turned it around. 
+
+The light was off. 
+Did't work very weel. 
+
+The conclusion of this experiment is that the biggest factor is the calibrating position/angle. 
 
 ### Choice of parameters on the fly