Design of ESP8266 Smart Home Using MQTT and Node-RED

Developments in Internet of Things (IoT) have enabled innovations in smart home and industrial automation, providing possibilities for devices in homes to be monitored and controlled remotely. Such solutions have resulted in energy efficiency and cost savings, as appliances are monitored and controlled by small, resource constrained embedded devices. The paper presents a design of an ESP8266 NodeMCU smart home solution, using Message Queuing Telemetry Transport (MQTT) and Node-RED. The smart home solution design utilises an MQTT mosquito broker on raspberry Pi $3\mathrm{B} +$, a single board computer development board. A DHT 22 sensor is interfaced with the ESP8266 micro-controller to collect sensor data for temperature and humidity, with the raspberry Pi performing functions of MQTT broker to relay sensor data information to a Node-RED dashboard.