This GSM remote control project uses an AVR micro-controller (ATtiny2313) and the GM-47 GSM module to perform ON/OFF switching of remotely located devices through text message. It features four relay switches and eight digital inputs to monitor status of normal or reed switches. The SMS commands are password-protected.
SMS remote control
This project describes a technique of adding the remote control feature to an electrical appliance. The goal is to construct a black box where you can plug-in your 120V AC appliance (it can be easily modified for 220 V mains supply too) and control the ON and OFF operations with a TV or DVD remote that uses modulated infra-red (IR) pulse train of 38 KHz frequency. I did this project for my wife who studies late at night on her bed and later feels tired to stand up and turns the light off. Now she does it from bed with the TV remote. The good thing about this project is that it does not use any microcontroller and is only based on the CD4017 decade counter IC.
IR toggle switch for an electrical appliance