Haberdashers’ Aske’s Hatcham College – Years 7-9
We built a miniature greenhouse from acrylic sheets and assembled an automated water system to maximise green space in a small space. In urban areas, space is limited, food waste is rife and produce travels a long way. Our solution, the green greenhouse, uses a soil moisture sensor to detect when water is needed; the Raspberry Pi then turns on a submersible pump that pumps water to the base of the plant.
The water system works by collecting rainwater from the slanted roof in a container. A silicone tube then transports water to the plant and re-uses any run-off the plant does not absorb. We also developed an app to work with the greenhouse. It features explanatory videos of how the greenhouse water system works and a Build Your Own Sustainable City game. It monitors the humidity, temperature and light levels in your greenhouse. And it lets you snap and share photos of your plant’s progress through a plant diary. The app appeals to children, encouraging engagement with food and community gardening.