Classic paper on soil moisture sensors (from 2010!) -- the title says it all: "Mate, we don't need a chip to tell us the soil's dry" https://doi.org/10.1145/1

Classic paper on soil moisture sensors (from 2010!) -- the title says it all: "Mate, we don't need a chip to tell us the soil's dry" https://doi.org/10.1145/1858171.1858211 https://doi.org/10.1145/1858171.1858211