Solar-Powered IoT-Based Home Fire Early Warning and Protection System

This paper presents the implementation of a prototype of a fire early warning system in a residential house using temperature and smoke sensors supplied by an Internet of Things (IoT) based solar module. The 10Wp solar module serves as the energy source, connected to a 12V battery via a solar charge controller (SSC). The Arduino Uno serves as a microcontroller or controller for the proposed system model. NodeMCU functions as a wifi module for communication between the Microcontroller and Android. The systemstarts working with Arduino Uno and NodeMCU in an on condition and is connected to the internet. Data retrieval is carried out through testing by the MQ-2 Sensor and LM35 Sensor, respectively, to detect smoke (gas) and heat. The system then activates the buzzer, sends data on the status and level of smoke (gas) and heat to the smartphone screen and liquid crystal displays (LCDs) in the form of an alarm, and orders the PLN switch to operate, cutting off the electricity. The results of the tool test show that the proposed prototype can provide early warning notifications regarding the status and level of smoke (gas) and heat, both from the LCD and remotely from the smartphone, and is able to activate the relay and order the switch to cut off the electricity, thereby preventing a fire.The prototype system's source is supplied by solar modules independently, making it applicable in remote areas with limited electricity access-compared to the previous model, which was supplied solely by the electricity grid.