Our sunflower is a tiny robot flower which has no mobility. It can only and continuously turns its face towards the sun like the sunflowers do.
Step 1: Parts
The robot sunflower is made from plastic parts taken from old CD drivers and junk home equipment; a small dc motor and reduction gear from the CD-R sawed together with some plastic parts, a tiny solar panel, some other plastic parts taken from an old aquarium filter and a simple, 4 transistor circuit made by me.
Our flowers uses the energy that comes from the sun to find more sunlight. So it continuously turns its face (the solar panel) towards the sun. As the same way sunflowers do. You can put it at balcony or window ledge. I've glued a magnetiesed CD holder disk taken from the old CD-ROM driver to the base of the robot. So when it is put on to a mettallic surface, it holds the surface firmly by the use of magnetic force.
Step 2: Where Can You Use?
anywhere it sees light. it will turn towards the sun with no need of external power.
if you use it inside your car, then every turn will affect its direction though it will simply follow the sun turning around the car.
The best way of making the mechanical assembly is as follows. The motor is mounted upside-down, the axle is connected to a magnet which will be used as the base of the flower, enabling it to firmly stick to any magnetic metal surface. Though the circuitry and the power supply (the solar panel) will be mounted on top of the motor, there will be no cables which are connected to the outside world, disabling the 360Â° turn of the flower.