Sonar kit, build your own submarine hunter.. | Hobbyist.co.nz
DIY Sonar Bag! : r/IceFishing
How To Make A Sonar Device - YouTube
DIY Echosounder | Hackaday.io
DIY Hydrophone Listens In On The Deep For Cheap | Hackaday
DIY 3D water depth mapping with Arduino and echo sounder - YouTube
DIY sonar visualizer with Processing + Arduino - Make:
How to make a radar/ultrasonic sonar system with Arduino (Tutorial, incl. Sketch code) - YouTube
Deeper Sonar display box DIY. Lovingly titled “The Whack Pack”. Made out of a cheap tablet and stuff I had around the house. Super fun project, can't wait to try it out
DIY Side Scan Sonar - EEWeb
The Ardupilot controlled transducer boat part 3 - Blogs - diydrones
Off-The-Shelf Hacker: Repurpose Your DIY Projects - The New Stack