Abstract: A remote wireless moisture sensing unit is insertable into soil. The sensing unit includes at least three capacitive sensors positioned at three spaced apart levels with respect to the surface of the soil. The capacitance of each sensor increases in the presence of increased moisture content of the soil proximate to the sensor. An analog multiplexer selectively routes each sensor to an input to a capacitively-controlled oscillator to cause the oscillator to generate a clock signal having a frequency responsive to the capacitance of the currently connected sensor and thus responsive to the moisture content proximate to the currently selected sensor. A processor generates a respective data value for the frequency corresponding to each sensor and transmits the data values for the sensors via a radio frequency transceiver. The data values are processed to determine the moisture content of the soil at the three sensor levels.

Abstract: A water conservation apparatus is connectable to a legacy irrigation controller to provide access to the irrigation controller to enable a remote user to selectively disable watering irrespective of the watering schedule programmed in the irrigation controller. The apparatus is connectable to the rain sensor of irrigation controllers having rain sensor connections. In irrigation controllers not having rain sensor connections, the apparatus is connectable to the common line of the valve control lines to selectively interrupt current to the valves. The apparatus is connectable to a Wi-Fi router to enable communications to a cloud-based server such that the apparatus is able to receive control signals from the server to selectively disable watering based on current and predicted weather conditions.