Introduction: First Homemade PVC Geophone for Earthquakes
About: Structural Civil Engineer, I do electronic assemblies as a hobby for several years.
Through this project I try to bring to earthquake study lovers a geophone seismometer very easy to make and also very cheap. The amplifier I use in this project is the same one that I presented here at Hackster.io ( https://www.hackster.io/washington/super-cheap-amplifier-for-earthquake-sensors-388fd1 ) where I set the two potentiometers for one final gain of 2500X. According to the geophone performance this gain can be modified in the amplifier for more or for less. The sequence of photos and videos below speak more than my words.
Step 1: PVC Connection With 1 "outside Diameter
Step 2: Detail Showing Two Coils Separated by a Pvc Ring and Interconnected, Each With About 600 Turns Totaling 1200 Turns and Presenting a Final Resistivity of 395 Ohms, Made in 40 Ga Wire.
Step 3: Two Neodymium Magnets With a Diameter of 3/4 "and Thickness of 1/4"
Step 4: DUAL WEAK SIGNAL AMPLIFIER LM358
Step 5: Arduino Nano R3
Step 6: Mounting the LM358 Amplifier With the Arduino Nano R3 on a Breadboard
Step 7: Resistance Spare Element
Step 8: Hot Glue Gun - Resistance - Phenolite Plate Bottom and Top - Two Neodymium Magnets
Step 9: Two Neodymium Magnets, Resistance and Phenolite Glued Together
Step 10: All Overlapping Components
Step 11: Mounted Geophone.
Step 12: All Components Connected to the Notebook.
Step 13: Amaseis Software Screen.
Step 14: Amaseis Software Screen.
Step 15: Amaseis Software Screen.
Step 16: Amaseis Software Screen.
Step 17: Software Amaseis Download: Https://www.iris.edu/hq/sis/resources/software
Step 18: Arduino Code Download: Https://github.com/brianxfury/Low-Cost-Arduino-based-Seismometer-Project/blob/master/nerdaqII.pde
Step 19: Schematic PVC Geophone
