ARM Based Smart Power Saving System for Home Automation

Abstract — Intrinsically in home and office appliances like light and fan are controlled manually, which leads to power wastage. Even though there is no usage then also left ON and even when the appliances are in use their operation is not controlled by environmental conditions like temperature variations and daylight. By making a smart automated controlling system for appliances we can save the power by some amount. In this paper we are providing a solution for preventing the wastage of power in an adequate and cost effective way. Our system consists of a biometric electronic door lock and power saving module. When the user finger print matches in door lock, the power saving module is switched ON. The power saving module switches the appliances in the room based on the presence of the person. It also controls the power delivered to fan and light according to temperature of room and natural daylight intensity. Keywords- ARM7 TDMI-S, Wireless RF module, LPC2129