Step 6: Make the head spin
You will need to be a little creative if you decide to perform this step. I wanted my omnibot to have a head that could watch things, so it was a bit of a challenge. In the second video of this project you can see a better view of the mechanism I used to modify the head.
The head "floats" on a servo wheel by two peices of plastic that I had glued to it. I then used tiny screws to secure the peices of plastic to each other. The head can be removed because it is pressure fit. Obvoiusly a bit delicate, but after all it is a robot :D