IoT Greenhouse Controller: A Golioth Reference Design

Originally published at: IoT Greenhouse Controller: A Golioth Reference Design - Golioth

The Internet of Things (IoT) can make existing infrastructure more useful and easier to operate, with the added benefit that you don’t need to be on-site to make changes. This is the case with Golioth’s latest reference design: a greenhouse controller that adjusts ventilation and grow lighting based on sensor readings. It also provides manual control from the cloud. Whether it’s too hot or too cold, tightly monitoring and regulating greenhouse temperature has a huge effect on crop yield and growing time. The same can be said for lighting conditions. At this time of year (winter), consider the poinsettia: it requires intense light during the day, and at least 12 hours of total darkness over night in order to turn a vibrant shade of red. Sounds like a great job for an automated controller. But think beyond one type of plant and one time of year. The agriculture industry uses automated control to implement different growing conditions based on the cultivar. A cloud-connected controller makes it much easier to update (and keep track of) the growth profiles. The IoT Greenhouse Controller An IoT Greenhouse Controller continues to show that simply connecting sensors to the internet is impactful. From one online dashboard you can see how the light, temperature, pressure, and humidity is trending across all of your planthouses. For this reference design we added two mains-rated relays to add control to the equation. The cellular modem sends sensor data back to Golioth, and monitors the cloud for updates in target temperature and light intensity. A threshold setting for light level automatically controls when the grow lights are turned on or off. The same is true for a temperature threshold that…