OpenROV is a open-source underwater robot. But it's so much more. It's also a community of people who are working together to create more accessible, affordable, and awesome platform for underwater exploration. (Here's a little bit more history.)
If you want to start building an OpenROV and contributing to the community development process, there are two options:
Assembly of the entire OpenROV 2.3 structure can be done over a weekend, and most sections take less then an hour. Listed with each assembly section is a Bill Of Materials (what parts and tools you'll need), general notes for the assembly (what the best working space is, how long it should take, what each part is for, etc), the instruction set itself, and notes on what to do if something goes wrong.
Improvements and features are continually added by builders who have found better solutions. So check back often for the latest design updates. Remember, if you have questions, you can always visit the OpenROV builder's forum.
Building the OpenROV doesn't require a master in robotics or engineering, but it's a fun project that can be completed in a weekend. We have laid down all the steps in a (hopefully) easy to follow guide. When you have done with the building and used your ROV a few times, if you feel like you can start contributing, either by contributing to the core system (body, electronics or code) or by building extensions (payloads) that plug into the ROV.