watermelon prober

Because of different water content of a mature watermelon and an immature one, there are differences in tones when tap with your finger. The software collects and analyzes the sound to distinguish whether a watermelon is meture or not. After the software analyzed the noise of the background, place your phone on a watermelon. Then tap the watermelon twice slightly every 3 second. Wait for a moment you can get the result. And you can see the waves of data at the report screen.