Design and implementation of integrated control system for IoT enabled home automation

Home automation innovation is active field of interest for researchers and industrial innovators. Home automation is replacing manual mode of operating the gadgets and electrical loads like never before. Due to advancement in Internet of Things (IoT) technology, sensor technology and embedding computing, research in home automation is taking bigger dimensions. This research paper offers design and implementation of integrated home automation solution with IoT based remote monitoring feature. Smart home control unit is developed around AVR microcontroller Atmega 2650, Wi-Fi IoT module ESP 8266, RN-42 Bluetooth module with Serial Port Profile (SPP), DS3231 Real Time Clock (RTC) module, sensors for light, temperature, humidity, PIR motion detection, soil moisture sensor, relay board, 3.5-inch touch screen display and electrical loads. Real-time environmental parameters are sensed by the on-board sensors and based on pre-defined values of these parameters, switching of electrical loads takes place. When ambient light falls below a threshold, LED lamps switched ON, when human activity is not detected, light gets switched OFF to save electricity. Speech to text conversion is used to control switching of gadgets using voice command in mobile app through Google`s voice assistant. Smart home parameters are uploaded to internet Cloud in real-time for remote monitoring application.