倾斜补偿电子罗盘CMPS09

CMPS09 - Tilt Compensated Comp* Module

IntroductionThe CMPS09 module is a tilt compensated comp*. Employing a 3-axis magnetometer and a 3-axis accelerometer and a powerful 16-bit processor, the CMPS09 has been designed to remove the errors caused by tilting of the PCB. The CMPS09 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. We have also writtenexamplesof using the CMPS09 module with a wide range of popular controllers. The CMPS09 module requires a power supply at 3.3 - 5v and draws a nominal 25mA of current. There are three ways of getting the bearing from the module. A serial interface, an I2C interface or a PWM output.

Mode selection
For data on each mode please click the mode heading. Note the CMPS09 looks at the mode selection pins at power-up only.

Serial mode

To enter the serial mode of operation
connect the mode pin to ground

I2C mode
To enter the I2C mode of operation leave
the mode pin unconnected

PWM mode

To enter the PWM mode of operation
connect the select PWM pin to ground

PCB Drilling PlanThe following diagram shows the CMPS09 PCB mounting hole positions.

Voltage - 3.3v-5v only required
Current - 25mA T*.
Resolution - 0.1 Degree
Accuracy - Horizontal, 3-4 degrees.
Accuracy - Tilted to +/- 60 degrees, 4-5 degrees
Output 1 - I2C Interface, S*US compatible, 0-255 and 0-3599 , 100khz
Output 2 - Serial port, 9600 baud, no parity, 2 s* bits and 3.3v-5v signal levels
Output 3 - Timing Pulse 1mS to 37mS in 0.1mS increments
Small Size - 24mm x 18mm