https://youtube.com/watch?v=5HUCAF6898w%3Fversion%3D3%26rel%3D1%26fs%3D1%26autohide%3D2%26showsearch%3D0%26showinfo%3D1%26iv_load_policy%3D1%26wmode%3Dtransparent

Alex Williams pulled off an incredible engineering project. He developed an Autonomous Underwater Vehicle (AUV) which uses a buoyancy engine rather than propellers as its propulsion mechanism and made the entire project Open Source and Open Hardware. The design aims to make extended duration missions a possibility by using very little power to move the…

via An Interview with Alex Williams, Grand Prize Winner — Hackaday