I’ve designed a few open source Arduino DIY circuit boards for topside controlling, bottom side thruster controlling, power distribution and camera overlay and started on their associated software as well as instructions for etching. Each board is 2 x 2 inch and cost under $15.00 to build. I would like to start an open source thread on this site and ask other developers to contribute their skills to this.
I'll post what I have as soon as I have that ability and there is adequate interest.
I've developed several boards for quad copters and have been interested in ROVs for a long time.
Please let me know if this interest you!
I've posted my DIY board designs with a brief description of their use in hope of sparking some interest, software will be following in a few weeks. Please feel free to comment.