SeismoTrak Earthquake Detector | LIDAR & Pb Based

SeismoTrak is an earthquake detector

• Uses two VL52L0X time-of-flight distance detectors mounted in an X-Y configuration

• Measures the distance to an 8 ounce lead weight suspended 8 inches

• Weight is a standard fishing line weight with an eye screw, painted with acrylic white paint

• Suspended using a black Nylon upholstery thread with a M*1.7 8mm screw at the top

• An Arduino Nano Every samples the distance five times per second

• A sophisticated Z-Score algorithm detects movement, filtering out detector noise

• When ground movement is detected, a bright red pilot lamp warns along with a loud piezo alarm

• A mute pushbutton is provided to quiet the alarm

• 30 seconds after the movement is no longer detected the alarm quiets automatically

Sources:

• https://www.tinkercad.com/things/25R8DhcATeh-earthquake-detector-final

• https://www.tinkercad.com/things/kzI76yMjvhY-seismotrak-controller-final

• https://github.com/jhogsett/SeismoTrak

All detector and controller parts are printed using PLA on QIDI Plus4 Printers. The pilot lamp is printed using PETG.

• Supports are required for the controller body

• The strut holes in the base and feeder ball are modeled with zero tolerance, requiring careful filing of the holes with a diamond file to create a tight permanent fit

The yellow rectangular device serves two purposes

• Immobilizes the lead weight for easy and safe transport of the device

• Holds the weight at the proper distance after initially applying the Nylon thread as it relaxes and elongates, allowing for a tension adjustment at the top