Accelerometer & Magnetometer UNITS

SARA AFF
#1

I use the library Sodaq_LSM303AGR to get accelerometer and magnetometer values of the sensor.
I have the Sodaq Sara R410M.
Does anyone knows the units of that values?
In the void loop() i use these functions to get the sensor values :

SerialUSB.println("Print accel X Y Z");

SerialUSB.print(accel.getX());
SerialUSB.print(" ");
SerialUSB.print(accel.getY());
SerialUSB.print(" ");
SerialUSB.println(accel.getZ());

SerialUSB.println("-------------------");

SerialUSB.println("Print Mag X Y Z");

SerialUSB.print(accel.getMagX());
SerialUSB.print(" ");
SerialUSB.print(accel.getMagY());
SerialUSB.print(" ");
SerialUSB.println(accel.getMagZ());

delay(5000);

}

The values i get are like this :

Print accel X Y Z
0.24 -0.03 0.97

Print Mag X Y Z
-384.00 -58.50 -472.50

but i cant find anywhere what units are represent these values…

#2

Hi,

The unit for the Accelerometer is in G (Gravitational constant)

The Magnetometer values are in Gauss
Here is an explanation how to convert it to compass values.

Best regards,
Jan

#3

Thank you very much Jan. You really help me.

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