This is my power functions robot named Grumpy.
Like other robots he has some basic functions like:
-lower and raise his arms
-open and close his claw to pick things up
But that wasen't enough for me. I wanted him to have some personality. To do that I added some head movements. He can shake his head left/right and move his neck back- and forward. While driving he always looks in the direction he's going. He can also move his eyebrows up and down.
For all these functions only four motors where needed!
You can see this model in action by visiting youtube.com/jovlem
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