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I was examining the specs of a breakout board.
It says in there that,
Integrate 10 dof sensors
Adxl345 accelerometer
ITG3200 gyro
HMC5883L Compass
BMP280 pressure sensor
Why is it called as a 10 DOF sensor? In past I was dealing with some IMUs consisting of an accelerometer + a gyroscope and they were called as 6 DOF sensors. Which was a little bit more understandable, I was thinking that 3 measurements from accel and 3 from gyro = 6 degrees of freedom. However in the above case, I am not sure.
In this context, DOF (degrees of freedom) just mean the number of independent parameters.
Here it is 10:
accelerometer = 3 (acceleration in three dimensions)
gyro = 3 (rate of rotation around three axes)
compass = 3 (magnetic field in three dimensions)
pressure = 1 (well... pressure)
