Abstract:
AC and Automatic light switches Based Sensor PIR and LDR is a tool designed to facilitate a person to activate the air conditioning and lights, which use a PIR sensor and LDR as your detection. This tool automatically searches only serves as a switch, so one does not have to turn on manually as this tool will be active and do the switching if it detects the presence of a person in a room, the room to detect movement of the PIR sensor is used to detect the signal and dark in a room used LDR. AC on this tool automatically turns on when it detects the presence of a person (movement) of a room, while for the lamp, the lamp turns on when there is movement in the room and the room in the dark. AC and Automatic light switches Based Sensor PIR and LDR using some main components for switching 5to12Vdc is 5Vdc relay, relay for switching 220VAC to load, PIR sensor for detecting the presence of people in the room or motion detectors, LDR as detector dark signal in the room, and delay timer to regulate the load on the air conditioner.
