ESP32: read a soil moisture sensor (capacitive, not resistive)
Wire a capacitive soil moisture sensor to an ESP32 and read soil moisture as a percentage. Skip the resistive sensor; it corrodes and lies.
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Wire a capacitive soil moisture sensor to an ESP32 and read soil moisture as a percentage. Skip the resistive sensor; it corrodes and lies.
Soil moisture sensor + 12V water pump + ESP32 = a plant monitor that waters your plant when the soil gets dry. Solar-powered for outdoor use.