This is a great design case that I am using to house an Arduino UNO to be used with a 10 DOF attitude & heading reference system (AHRS) for my sunfish sailboat. Currently it is using an Adafruit MEMS sensor and sensor fusion library to display heading in degrees, pitch and roll, and pitch and roll rates (borrowed from code I wrote previously for a triple redundant IMU for use in balance vehicle (e.g. DIY Segway). It soon will have an Adafruit GPS added to display LAT/LONG in the last row of a 2004 LCD display.