OpenROV is a project that provides plans and software for a remotely operated vehicle (ROV). Currently, it’s a series of prototypes, with the goal of a fully-realized design of an underwater exploration device.
It was originally created to explore Hall City Cave in northern California. The cave has a lake where robbers supposedly dropped gold. The ROV has made a successful journey into the lake, although it hasn’t yet struck gold.
The OpenROV project provides hardware plans to create a robot with brushless propellers for mobility, a mounting chassis on which a camera is installed, and additional room for other payloads.
The project also provides software that lets you control the ROV through a command shell.