Microcontroller Based Optical Switch and Regulator for Home Applications

This paper implements the optical switch and regulator to control the AC voltage through IR communication using AVR microcontroller. This system uses invisible IR which enables the users to control the power circuit through a processing device. The IR transmitter and receiver are installed on the same plane to the same direction a small apart. To change the switching state (ON/OFF) or control the AC voltage, a hand-finger is used as a reflector. This system is designed to be low cost because one Microcontroller and one IR transmitter circuit can handle more switches and regulator. These Microcontroller based switches and regulators which are not connected with AC voltage directly are operated by 5 Volt DC that provides electrical safety. These can be used in AC power supply instead of manual switches and regulators.