IMU Tracker PCB Revision & Assembly

The real-time IMU tracker I have in hand already functions, but it is still in the Testing/Revision phase: the board needs to be assembled in a small pilot run, its design cleaned up, and its behaviour verified both when it operates on its own and when it pairs with our mobile app... (Budget: $15 - $25 USD, Jobs: Bluetooth Low Energy (BLE), Circuit Design, Electronics, Embedded Systems, Mechanical Engineering, Microcontroller, PCB Layout, Prototyping)