The 6DOF IMU 11 Click is a Click board™ based on the KMX63, a 6 Degrees-of-Freedom inertial sensor system on a single, silicon chip, which is designed to strike a balance between current consumption and noise performance with excellent bias stability over temperature. The KMX63 sensor consists of a tri-axial magnetometer plus a triaxial accelerometer coupled with an ASIC.
The 6DOF IMU 11 Click is supported by a mikroSDK compliant library, which includes functions that simplify software development.
Main component on 6DOF IMU 11 Click is the KMX63 from Kionix (ROHM company), a tri-axis accelerometer, tri-axis magnetometer, and temperature sensor on a single chip combo solution. The Accelerometer and Magnetometer data can be accumulated in an internal 384-byte FIFO buffer and transmitted to the application processor.
Acceleration sensing is based on the principle of a differential capacitance arising from acceleration induced motion of the sense element, which utilizes common mode cancellation to decrease errors from process variation, temperature, and environmental stress. Capacitance changes are amplified and converted into digital signals which are processed by a dedicated digital signal processing unit. The digital signal processor applies filtering, bias, and sensitivity adjustments, as well as temperature compensation.
Magnetic sensing is based on the principle of magnetic impedance. The magnetic sensor detects very small magnetic fields by passing an electric pulse through a special electron spin aligned amorphous wire. Due to the high Curie temperature of the wire, the sensor’s thermal performance shows excellent stability.
Noise performance is excellent with bias stability over temperature. Bias errors resulting from assembly can be trimmed digitally by the user. These sensors can accept supply voltages between 1.7V and 3.6V, and digital communication voltages from the MCU between 1.2V and 3.6V.
The Kionix KMX63 digital sensor can communicate on the I2C digital serial interface bus. This flexibility allows for easy system integration by eliminating analog-to-digital converter requirements and by providing direct communication with system processors. The I2C interface is compliant with high-speed mode, fast mode, and standard mode I2C protocols.
With 6DOF IMU 6 Click you may communicate by using I2C serial interface. The I2C is primarily used for serial communication between a Controller device and one or more Peripheral devices. The KMX63 always operates as a Peripheral device during standard Controller-Peripheral I2C operation.
Given all of the possibilities its features offer, the 6DOF IMU 11 Click can be used for applications which require movement and orientation features, such as screen orientation, navigation, game playing, machine/vibration analysis, etc...
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