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I want to fully automate a weed greenhouse with electronics so that we have to go work on it as little as possible. Here's what I'm thinking:
-temperature control with a temperature sensor and exhaust fan and heater switched by relays
-humidity control with a hygrometer and humidifier on a relay
-watering either timer based or with moisture sensors in the pots. A solenoid valve opens or closes water flow, with splitters to each pot, so that all pots get the same amount of water
-nutrients with some sort of container with a mixing mechanism, perhaps a chemistry stir bar. Measure out nutrients from their bottles with strain gauges measuring weight, or flow sensors in the pipes. Open and close with solenoid valves
What else do I need to account for? Is there a better way to do any of this?
It's all going to be run off an arduino. I've got enough experience with the electrical side of it that I'm not worried, and I have a friend who'd be good with the mechanical aspects. But I don't really know a damn thing about gardening.
It's a small grow, <10 plants in individual pots.
