Application of IoT and Cloud Storage in Android-Based Smart Home Technology

Smart Home is an application of the Internet of Things that can maximize monitoring, control, and home security. User Interface of Smart Home Apps is part of the design to fulfill the requirement. To make it happen, the researcher created an intelligent home system using the NodeMCU ESP8266 microcontroller, which is connected to the android application on the smartphone. This system is connected to Firebase as a real-time database server using an internet connection. This system has several sensors such as PIR, LDR, and MQ-2 sensors. The PIR sensor functions as a motion detector in the room. The LDR sensor functions as a light detector, where if the light is detected in the room, lights 1 and 2 will turn off, and if not, lights 1 and 2 will turn on. The MQ-2 sensor functions as a flammable gas detector where if it is detected, the DC fan (blower) will turn on; if not, the DC fan (blower) will turn off. This system is equipped with a Secure Mode feature where when an unwanted movement (thief) is detected or flammable gas is seen, the buzzer (alarm) will light up. All components are placed in a prototype house measuring 40 x 25 cm. The method used in the design of the intelligent home system prototype method. While in the creation of innovative home applications using the waterfall method. Based on the test results, it can be concluded that the system works well. The response speed between the design and the android application on the smartphone depends on the internet connection, which in this test itself takes an average of 3 seconds.