Dual 9V hydrophone Piezo Buffer
This is the PCB needed for the Hydrophone Drop Rig. Take it snorkeling or diving with you. It uses the same Piezo Cylinder that is in my original hydrophone build. That project is in use globally by several nature recordists, and was involved in a hydrophone shoot out at Skywalker Sound. It bested all the ones they had including a $3K one that is no longer made.
The Underwater Drop Rig has the same acoustic properties and sound quality as my first instructable. It is a great project for a science fair and investigating amphibians and other water borne animals to see if they actually produce vocalizations.
Read all about it here: https://www.instructables.com/Hydrophone-Drop-Rigs
Dual 9V hydrophone Piezo Buffer
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