CMPS11 - Tilt Compensated Compass Module

Introduction
The CMPS11 is the 3rd generation tilt compensated compass. Employing 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 produces 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 are used to calculate the bearing, each of these components are also made available in there raw form. The CMPS11 module requires a power supply at  3.6 - 5v and draws a nominal 25mA of current. A choice of  serial or I2C interfaces are provided.

Mode selection
For data on each mode please click the mode heading. Note the CMPS11 looks at the mode selection pin at power-up only. 

I2C mode		Serial mode
3.6v-5v SDA SCL Mode Factory use 0v Ground		3.6v-5v Tx Rx Mode Factory use 0v Ground
To enter the I2C mode of operation leave the mode pin unconnected		To enter the serial mode of operation connect the mode pin to ground

The Factory use pin is for our internal testing only, this pin should remain unconnected.

PCB Drilling Plan
The following diagram shows the CMPS11 PCB mounting hole positions.

* Note: Product may not be exactly as shown in image. Contact us for more information.