Earthquake Detector Alarm System Using ADXL335 Accelerometer and Arduino

Abstract

This study presents the design and implementation of a compact and cost-effective Earthquake Detector Alarm System utilizing an Arduino microcontroller and an ADXL335 accelerometer for real-time seismic monitoring. The system continuously measures acceleration along the X, Y, and Z axes and compares the values against a predefined threshold to differentiate between normal environmental vibrations and abnormal seismic activity. Upon detection of abnormal grounThis study introduces the design and implementation of a compact, cost-effective Earthquake Detector Alarm System using an Arduino microcontroller and an ADXL335 accelerometer for real-time seismic monitoring. The system continuously measures acceleration along the X, Y, and Z axes and compares these values to a set threshold to distinguish between normal environmental vibrations and abnormal seismic activity. When abnormal ground motion is detected, a multi-modal alert system is activated, including an audible alarm via a buzzer, a visual indicator through an LED, and real-time status messages displayed on a 16×2 LCD screen. To ensure continuous operation during power outages, the system is powered by a solar-based energy management unit consisting of photovoltaic cells, a charge controller, and a 12V battery. Experimental tests confirmed that the prototype exhibits high sensitivity, a rapid response time (<1 second), and reliable detection under simulated vibration conditions. The system is lightweight, portable, and energy-efficient, making it suitable for deployment in small-scale environments such as homes, schools, offices, and community centers. This research offers a low-cost, sustainable solution for local earthquake preparedness, with potential for scalability through future integration of wireless communication and IoT-based data logging for community-wide early warning network motion. A multi-modal alert mechanism is activated, comprising an audible alarm through a buzzer, a visual indication via an LED, and real-time status messages displayed on a 16×2 LCD screen. To ensure uninterrupted operation during power outages, the system is powered through a solar-based energy management unit consisting of photovoltaic cells, a charge controller, and a 12V battery. Experimental evaluation confirmed that the prototype demonstrates high sensitivity, rapid response time (<1 second), and reliable detection capability under simulated vibration conditions. The system is lightweight, portable, and energy-efficient, making it suitable for deployment in small-scale environments such as homes, schools, offices, and community centers. This research contributes to a low-cost, sustainable solution for local-level earthquake preparedness, with potential scalability through future integration of wireless communication and IoT-based data logging for community-wide early warning networks.