DIY Geophone | money | This is a very simple DIY project that will save you quite a bit of money. Using parts that you can easily get online for under $50,
geophone in borehole?
Geophone - YouTube
Geophone | Hackaday
Y'all ever use a geophone to record music? Maybe check one out. : r/experimentalmusic
The Geophone - How We Listen To The Earth - Earth Sciences
IoT: Raspberry Pi Seismometer - Tring Web Design
Build a seismograph with Raspberry Shake — The MagPi magazine