Building a Hydrophone

Building a Hydrophone

Building is a fun project to complete.  With a little guidance, anyone can make one.  If you want to build a hydrophone, read on. 

You can find the written directions here and video directions here.  

Materials List

You can order the following items from McMaster-Carr.  Here is what your shopping cart with look it.

Click the links below to order your items.

Stereo Cord

Male x Male, 25 Feet Long

https://www.mcmaster.com/#8317t15/=1e2jk7e

Epoxy Structural Adhesive for Vertical Surfaces 0.47 oz. Syringe

https://www.mcmaster.com/#7670a22/=1e2jlrb

Polyethylene Foam Adhesive-Back Bumper 3/4" OD, 1/16" High

https://www.mcmaster.com/#8213k2/=1e2jmqd

Standard-Wall PVC Pipe Fitting for Water Bushing Adapter with Hex, 1 Socket Male x 3/8 NPT Female

https://www.mcmaster.com/#4880k826/=1e2jn5k

Compact Plastic Submersible Cord Grip

Continuous Flex, NPT Threads, for 0.08"-0.24" Cord OD

https://www.mcmaster.com/#69915k62/=1e2jnle

From SparkFun

Piezo Element

https://www.sparkfun.com/products/10293

From Amazon

Voice Amplifier

https://www.amazon.com/gp/product/B071YVHLRP/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1

Tools

·         You will also need a few tools.

• ·         Wrench
• ·         Wire Stripper
• ·         Electrical Tape
• ·         Scissors
• ·         Rubber Gloves
• ·         WHOI recommended a soldering iron kit to connect the wires

If you would like to attempt to record data using the hydrophone, you will need a few other things

NIOSH Sound Level Meter iPhone App.

Microphone Input Connection for iPhone

You need a microphone adapter with a TRRS or 4 conductor wiring configuration (something that only apple uses and recognizes).  We also read we need a CTIA  instead of an OMTP wiring configuration.  We are still on the search, but will update this post with an adapter that works.