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CMPS11-Tilt Compensated Magnetic Compass

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The CMPS11 is our 3rd generation tilt compensated magnetic compass. It packs a 3-axis magnetometer, a 3-axis gyro and a 3-axis accelerometer. A Kalman filter combines the gyro and accelerometer to remove the errors caused by tilting of the PCB. The CMPS11 presents a result of 0-3599 representing 0-359.9 or 0 to 255.

The output of the three sensors measuring x, y and z components of the magnetic field, together with the pitch and roll data can be used to calculate the , each of these components also supports raw data output. The CMPS11 module requires a power supply of 3.6 - 5v and a nominal 25mA of current.

  • Voltage - 3.6v-5v 
  • Current - 35mA Typ. 
  • Resolution - 0.1 Degree 
  • Accuracy - Better than 2%. after calibration 
  • Signal levels - 3.3v, 5v tolerant
  • I2C mode - up to 100khz
  • Serial mode - 9600, 19200, 38400 baud
  • Weight : 10g
  • Size: 24.5 x 18.5 x 4.5mm(0.96 x 0.73 x 0.18")


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