There's not much to tell. I finished with my circuit board design, although I'll probably be fine tuning the design. I did come across an arduino shield that is similar to what I have been designing. The main differences are that I have multiple plugs for I2C, SPI, and UARTs with all of the necessary signal wires included in each plug. I also have special connectors for the gyro/accelerometer/compass, the SD Card holder and my DIP switches. I have 3.3v and 5v I2C with the voltage logic converter built into the board as well as the pulldown resistors for the DIP switches. Because I think my board will be a much cleaner solution and aI spent all that time, I'm probably going to go ahead and make my board.