DIY Seismometer | Earthquake Detection Alarm using Accelerometer & Arduino with Seismic Graph

Published at : 23 Dec 2025

𝗩𝗶𝗱𝗲𝗼 𝗗𝗲𝘀𝗰𝗿𝗶𝗽𝘁𝗶𝗼𝗻:
In this project, we will design an Earthquake Detector Alarm equipped with a Seismic Graph, also known as a DIY Seismometer. The system utilizes the ADXL335 3-axis accelerometer as a sensor to detect tilting, trembling, or any shaking movements caused by an earthquake.

The Arduino code, written in C++, retrieves acceleration values from the ADXL335 accelerometer and displays them on the LCD screen. For graphical visualization, we will develop a Python script. The script generates a graph representing the tilt or shaking state. This looks exactly like a Seismometer. Additionally, a buzzer or LED serves as an alarm. It gets activated whenever the shaking exceeds a predefined threshold.

𝗪𝗿𝗶𝘁𝘁𝗲𝗻 𝗧𝘂𝘁𝗼𝗿𝗶𝗮𝗹 & 𝗚𝘂𝗶𝗱𝗲: https://how2electronics.com/arduino-earthquake-detector-accelerometer/
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