Design and Implementation of a Google Assistant Home Automation System

Home automation systems are based on various technologies, including Bluetooth, ZigBee, IR controllers, GSM, and Radiofrequency (RF) technology. Although these systems are good, they are only helpful for short-distance automation of about 100 meters. This poses a significant challenge and increased the risk of an electrical disaster (such as a fire outbreak) for people outside their immediate area who unintentionally left their appliances ON. It also increases the potential for energy wastage for appliances that were left plugged into the mains for longer than necessary. Therefore, there is a need for a reliable method of managing home appliances remotely from a distance. This paper suggested a Wi-Fi-based home automation system to overcome the above-mentioned concerns. The system uses three modes to convey commands to turn on and off electrical appliances (voice, manual switch, and ON/OFF Phone icon) and also take cognizance of the time taken to switch ON/OF the connected loads. Developing this system entails implementing the various hardware components (such as the system's power supply, microcontroller, relays, switches, and loads) and the programming of the system controller. However, an average delay of 0.9 seconds was observed before switching. The results of the system testing revealed that it is very effective in the remote control of electrical appliances.