I have managed to follow the instructions you posted and replicate your examples with the LED and scale force sensor. I am interested in connecting 2 servos to the yun and try to generate the robot movement that you showcased in your video.
How have you generated robot movement using the Yun? I am pretty familiar with programming an Arduino Uno powered robot with a Parallax shield that has a 5V voltage regulator.
Can you provide some suggestions/resources based on your experience?