Project Name: home automation.
Through the home automation system we can control the different household appliances by means of a phone using DTMF and/or GSM technology. We can switch them ON and OFF even when we are away from home.
It works on the basis of AVR microcontroller. The signals are sent through the mobile phone which would be further forwarded to the microcontroller. These signals contain the instructions based on which the microcontroller will work. And thus, it will control the respective device connected to the microcontroller via relays or driver circuits etc.
Similarly, various sensors are also used for the security purposes which will notify the person via SMS in case of an unauthorized human entry in our absence or in case of fire etc, which would be received as a notification on android phone.
Thus through home automation system we can control different household appliances by means of a phone or switch them ON/OFF even while staying away from home as well as keep a high-tech security for our house.