Patent ID: 7258129
Filing Date: 2007-08-21
Classification: A01G,Y10T

Abstract:
1. A landscaping watering system comprising: a probe for monitoring a moisture content of an area of soil; a control unit coupled to the probe for sending an activation signal to activate a flow of water when a signal from the probe indicates the moisture content of the area of soil is below a predefined level and for sending a deactivation signal to stop a flow of water when a signal from the probe indicates the moisture content of the area is above a predefined level, wherein the control unit comprises: a comparator having a first input coupled to the probe and a second input coupled to a set point; a sample and hold circuit having an input coupled to an output of the comparator; a driver having an input coupled to the output of the sample and hold circuit and an output coupled to the relay for increasing a strength of an output signal from the sample and hold circuit; a relay coupled to the water solenoid valve; and a processor coupled to the comparator, the sample and hold circuit, and the driver for programming the control unit; and a water solenoid valve couple to a water line, the control unit and to at least one sprinkler for receiving the activation and deactivation signals from the control unit to start and stop a flow of water from the water line to the at least one sprinkler.