Earthquake Detector using Arduino and Vibration Sensor

The Earthquake Detector is a basic yet effective project built using an Arduino Uno and a vibration sensor (SW-420) to detect tremors or seismic activity. The sensor continuously monitors ground vibrations. When sudden or strong vibrations are detected, it sends a signal to the Arduino, which then triggers an alarm using a buzzer or LED to alert nearby individuals.

This system is simple to build and helps demonstrate how vibration sensing can be used in early warning systems. It can be further enhanced by integrating a 16×2 LCD to display real-time status or even a GSM module to send alerts remotely.

Real-Time Clock Display using Arduino and RTC Module

The Real-Time Clock (RTC) Display is a practical Arduino project that shows the current time and date using an RTC module like the DS3231 or DS1307, and a 16×2 LCD with I2C interface. The RTC module keeps track of time even when the Arduino is powered off, thanks to its internal battery.

The Arduino reads the time and date from the RTC module via I2C communication and continuously updates the LCD display. It shows real-time hours, minutes, seconds, and date, making it ideal for clocks, loggers, or time-based automation projects.

Light Following Robot using Arduino and LDR Sensor

The Light Following Robot is a fun and educational robotics project that uses Arduino Uno and LDR (Light Dependent Resistor) sensors to detect and follow a light source. It mimics the behavior of light-seeking organisms and is great for learning sensor-based automation and basic robotics.

The robot is built on a chassis with two DC motors controlled by an L298N motor driver. Two LDRs are placed at the front to sense light intensity. When one LDR detects more light than the other, the Arduino signals the motors to turn toward the brighter side. If both LDRs detect equal light, the robot moves forward.

Rain Detection System using Arduino and Rain Sensor

The Rain Detection System is a simple and practical project that uses an Arduino Uno and a rain sensor module to detect the presence of rain or moisture. It is useful for applications like smart irrigation, automatic window control, and home automation.

The system works by using the rain sensor’s sensing plate, which detects water droplets. When it rains, the sensor’s resistance changes and sends a signal to the Arduino. Based on this signal, the Arduino can display a message on a 16×2 LCD (with I2C) or trigger outputs like a buzzer or LED for alerts.