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Low Cost Seismograph using Raspberry Pi

Low Cost Seismograph using Raspberry Pi
RS - Raspberry Shake - an interesting product which changed the implementation and the power to reach and scale up the data collected from the earth quakes.

This product is a combination of several technologies but at the end, using a Raspberry pi HAT - integrated the other components to get data processed.

The main board combines a powerful processor and digitizer, which connects to a variety of sensors including geophones, microelectromechanical systems (MEMS), accelerometers and infra sound sensors (depending on the model).

This plugs right into the Raspberry Pi computer board to power it all and with custom coding on the microSD card, the data is sent out and processed in miniSEED. 

miniSEED is the standard data format in the industry, for easy learning, monitoring and analysis, which is also compatible with jAmaSeis.

 jAmaSeis is a Java based program that allows users to obtain and display seismic data in real time from either a local seismometer,  a remote educational seismometer connected to the jAmaseis network, or any research-quality seismometer that streams data to the IRIS Data Management Center.

A seismograph is a generic term used to describe a recording device that detects ground motion due to earthquake.

Typically this will comprise a recorder and a seismometer, which is a sensor that detects the velocity of the ground. Seismometers are usually very sensitive and will easily detect a typical quarry blast at a range of 100km.

Seismometers should not be confused with geophones, which also detect ground velocity but are typically much less sensitive and are used for close range blast monitoring and surveying.

An accelerograph is recorder that uses an accelerometer, which as you can tell from the name detects the acceleration of the ground.

Accelerometers are much less sensitive than seismometers, but have a much greater range, detecting ±2g or more of ground acceleration (things start flying off the ground at 1g, when gravity is overcome). By comparison a seismometer will clip at full scale if you tap it too hard with your finger.

The microbarograph, or simply called a barograph, records atmospheric pressure in millibars adjusted to sea level.
A continuous record of pressure changes is recorded on a rotating cylinder wrapped precisely with graph paper.

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