— A geophone sensor: This is a coil of wire attached to a mass inside a metal case. When the ground moves, the mass moves relative to the coil, inducing a voltage that is proportional to the ground velocity. We will use a 4.5 Hz geophone, which is sensitive to low-frequency vibrations.
— An Arduino Uno board: This is a microcontroller that can read analog and digital signals, perform calculations, and communicate with other devices. We will use it to read the voltage from the geophone and convert it into digital values.
— A wireless module: This is a device that can send and receive data wirelessly using radio waves. We will use an XBee module, which is compatible with the Arduino and can communicate over long distances.
— A computer: This is where we will receive and display the data from the Arduino. We will use a software tool called SeisGram2K, which is a Java application that can plot and analyze seismic signals in real time.
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