Some of these sensors may even have secondary features, allowing them to control other parts of the greenhouse too, like exhaust vents or fans. While the standard practice is to connect greenhouse ...

Based on that input, the Pi controls two exhaust fans located at opposite corners at the base of the greenhouse. These are speed controlled through a custom board and are used for drawing air in ...

an advantage of modern greenhouses is you can add automated routines that regulate the amount and timing of water to seedlings, control ventilation fan timing, and open and close vents.