Gladys: The Hydrophone

This is an update to my two previous hydrophone builds. There are multiple improvements. It is also part of an Instructable. Please see that as well. These are in use around the world and provide outstanding audio quality.

The build Instructable: https://www.instructables.com/The-Gla...

Purchase the PCB's here: https://www.jlielectronics.com/diy-ac...
Purchase the Piezo Cylinder here: https://www.jlielectronics.com/diy-ac...
Purchase an entire kit (minus the resin and mic cable) here: https://www.jlielectronics.com/diy-mi...


00:00 Intro
00:45 Circuit Protection
02:26 P48 Version
04:00 9 Volt Dual Version
05:33 Protection Test
05:46 Cylinder Seal Reasoning
06:12 Build Start
09:27 Molding
10:42 Purple Resin
12:07 Testing New vs. Old Design vs. Aquarian
14:49 Snorkeling with the Drop Rig
19:07 Summary