It is a low frequency bistable circuit which drives the flat coil. When the coil is energized, it generates a magnetic field that has the same polarity as the permanent magnet bonded to the sunflower. it will push The permanent magnet is away from the coil; when the coil loses power, the permanent magnet will return to the center of the coil due to gravity. At that point the coil will be energized again, so it will grow back. of the magnet. If this repeats, the sunflower will move.
Silicon solar photovoltaic cells provide working power