Cool work in progress from londonium2021 on Hackster.io:
This is the latest upgrade to my indoor garden. There is a water pump controlled by an Arduino that feeds a series of Blumats. Blumats drip small amounts of water over time based on the moisture level of the soil. They suck out water from the main water line when capillary action forces water through the ceramic sensor as it dries. This is a convenient way to control moisture without needing a lot of code or individual pumps and relays.
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