Project to monitor (and improve) plant growth with a Raspberry Pi, using Pimoroni's Enviro Phat, optional components like a hygrometer (to measure soil humidity and to know when it's time to water the plants) and a Raspberry Pi Camera.
Key features:
Writes sensor data (like brightness, light color, heading, temperature, pressure, moisture, etc.) to a database and captures timelapse of plant growth.
Displays sensor data in webinterface (unfinished, feel free to contribute).
Examples: