Research Pending/Beta CSO
From apertus wiki
The Center Solder On (CSO) is a small addon PCB that can be added to one of the slots of the Beta Main Board.
1 CSO1
The very first CSO simply had a few LEDs on it that could be made to blink in different patterns.
2 IMU CSO
The second design is intended as inertial measurement unit (IMU) and features 10 DOF (degrees of freedom) sensors: acceleration (3D), orientation (3D), magnetic field (3D) and pressure (1) it also measure temperature, primarily for internal compensation.
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