Our first idea was to create a tracked robot able to climb stairs and plenty of others obstacles, to reach a good speed (around 10 or 15 km/h) while filming and transmitting data. It will decide itself if it can go through an obstacle like a slope, stairs or a hole. Recognizing people and following them, take panorama pictures, follow a GPS designate way are its objectives.
Step 1: Chassis
We made a wooden chassis because wood is cheap and easy to transform. We used 5 mm plywood. This chassis need to be quite big if you want to set batteries, engine and electronics in it and suspensions, wheels and turret at the exterior; there is no maximum size but making it too big can be a problem for the gravity center of the robot when it climbs stairs.