hi i have to make a TV remote switch that can make one bulb on/off using only one relay ,ill use AT89c51 or any 8-bit UC but i dont know how to proceed which remote should i choose and how remote receiver will work. any help or website link would be highly appreciated.thanks

 

Are u designing the receiving end with a given IR transmitter?

You can use a infra-red receiver TSOP1138. This module will receive the IR and remove the 38KHz carrier. The signal can directly feed to any of the I/O of the 8051, but i will suggest that you feed it to the external interrupt pin. You will need to write codes to decode the incoming signal. There are a few IR formats (http://www.sbprojects.com/knowledge/ir/nec.htm).