A friend of mine asked me to design a home automation for him. He wants me to build something that will communicate with his air condition through an IR receiver that it has, and it will act as a programmable timer, to turn it on and off automatically. Then i thought that i should spice it up a little bit, and make a programmable IR universal timer, or something. No matter what, i will certainly need to interface an RTC (stands for Real Time Clock) chip. This chip is responsible for keeping the time.
LCD PIC Clock with the Maxim DS1307 RTC – [Link]