How To Build Good Contact Mics
https://hackaday.com/2025/12/22/how-to-build-good-contact-mics/

We’re most familiar with sound as vibrations that travel through the atmosphere around us. However, sound can also travel through objects, too! If you want to pick it up, you’d …read more (https://hackaday.com/2025/12/22/how-to-build-good-contact-mics/)