Although they're not huge (if you want to see a huge beautiful panorama give a look to Cannes 65 Gigapixel) they give you an idea of the power of the technique.
I then decided to build my own motorized panohead. This is a project I've had for last 3 or 4 years, and I always lacked of time. First idea was to use two step motors and a pic board as Arduino, to obtain a real versatile robot which would have make everybody green with envy ;-) as this one of Phil Warner which I've always admired.
Unfortunately (maybe not?) my project is changed a little, and I chose to design the simplest and cheapest motorized gear for panoramic photography.
Step 1: Overview
Then I searched a way to make the head move at little steps, and meanwhile make a switch closing the contact of the shutter mechanism of the camera. One of the objectives was making something very small and light which doesn't need to modify substantially the tripod, and which could be removed if needed. So this project was born. Read next steps to know how I solved the various quests.