Abstract: Disclosed herein are systems and techniques for controlling irrigation systems using thermoelectric devices. A thermoelectric generator can produce a voltage that is proportional to a temperature differential measured locally, adjacent an irrigation target or sprinkler. The voltage can be used to control the irrigation sprinkler, for example, by providing a signal to a control valve that is fluidly coupled with the sprinkler. The system can be self-contained, without external electrical connections and without solar panels, allowing for remote use that is not dependent upon solar irradiance. The system can further be tuned to individually control irrigation components, such as by calibrating the voltage to soil moisture or other conditions, and actuating the valve when the voltage reaches a threshold indicative of the condition.

Abstract: Disclosed herein are systems and techniques for controlling irrigation systems using thermoelectric devices. A thermoelectric generator can produce a voltage that is proportional to a temperature differential measured locally, adjacent an irrigation target or sprinkler. The voltage can be used to control the irrigation sprinkler, for example, by providing a signal to a control valve that is fluidly coupled with the sprinkler. The system can be self-contained, without external electrical connections and without solar panels, allowing for remote use that is not dependent upon solar irradiance. The system can further be tuned to individually control irrigation components, such as by calibrating the voltage to soil moisture or other conditions, and actuating the valve when the voltage reaches a threshold indicative of the condition.