What does hydroponic mean? Hydroponics is a way of growing plants not in dirt, but by with mineral nutrient solutions in a water solvent. With this method, plants can be grown with their roots exposed to the nutritious liquid, or the roots may be physically supported by other substrates.
Paul Langdon has a great Raspberry Pi and Arduino hydroponics project that amounts to an IoT enabled hydroponic farm. Here’s more on hackster.io:
The system is maintained with a series of Arduino controllers. Watering cycles, pH levels, nutrient levels, lighting cycles and ventilation fans are all maintained via the Arduino’s.
The Arduino’s can be networked to a Raspberry Pi using I2C to allow all system parameters to be monitored and updated in real time. The Raspberry Pi is further used to maintain a historical log of all the systems running data and make it available via a set if web services.
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