I've been working on getting a combined depth and IMU sensor board made for the OpenROV. Depth and heading are very useful instruments that enable an ROV to better know where it is, and where its going.
My goal for designing this board has been to keep the costs low, and make it easy to integrate into the OpenROV
The v1 schematic and layout of the board can be found right here
The sensors going on the board:
Depth - The MS5803-14BA which can measure up to 14 bars of pressure with 0.2 mbar resolution (link)
IMU (9-DOF sensor) - The MPU-9150 which has integrated 3-axis gyros, magnetometers, and accelerometers. (link)
I'm planning on sending the board to get fabbed in the next few days, feel free to look over and criticize the schematics/layouts since its the first time I'm doing a real PCB (I'm a ME not an EE) and also making it in Upverter!