This DIY wooden race boat concerns the knowledge of Solar Energy, the charge-discharge of capacitor and link mechanism. When the solar panel is illuminated by sunshine or strong light, the capacitor starts to recharge energy and the paddles starts to swing and drive the boat forward. This recharge procedure last for about 1 minute. After that, even there is no sunshine, the boat can still drive forward for long by the energy source emitted by the capacitor.
This work is a combination of great fun and physics knowledges.