MPU6050 Interfacing with Raspberry Pi using ‘C’

Introduction:

  • MPU6050 sensor module is an integrated 6-axis Motion tracking device.
  • It has a 3-axis Gyroscope, 3-axis Accelerometer, Digital Motion Processor and a Temperature sensor, all in a single IC.
  • It can accept inputs from other sensors like 3-axis magnetometer or pressure sensor using its Auxiliary I2C bus.
  • If external 3-axis magnetometer is connected, it can provide complete 9-axis Motion Fusion output.
  • A microcontroller can communicate with this module using I2C communication protocol. Various parameters can be found by reading values from addresses of certain registers using I2C communication.
  • Gyroscope and accelerometer reading along X, Y and Z axes are available in 2’s complement form.
  • Gyroscope readings are in degrees per second (dps) unit; Accelerometer readings are in g unit.

For more information about MPU6050 Sensor Module and how to use it, refer the topic MPU6050 Sensor Module in the sensors and modules section.

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Measuring Rotation and acceleration with the Raspberry Pi

Acceleration and rotation sensors are most known from smartphones. The rotation of the device can be detected and can be addressed directly.

With the Raspberry Pi and a Gyroscope / Accelerator sensor it is possible to measure the rotation as well as the acceleration of the 3 axes.
In this tutorial use the MPU 6050 Gyroscope / Accelerator sensor interferfaced to a Raspberry Pi, and reads the values using I2C.

Components:

For this tutorial I have used the following components:

  • Raspberry Pi
  • MPU 6050 sensor module
  • Jumper Cables

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Compile VLC Player with Hardware Acceleration

Thanks to a post on the Raspberry Pi Foundation’s Message Board, where people have detailed the instructions on how to easily compile VLC Media Player with Hardware Acceleration. For this project, you’ll just need a Raspberry Pi and the basic peripherals: a power source, screen, keyboard and mouse, and microSD card (you need all of this to get Raspbian Installed in the first place, anyway).

Before we begin, a quick note for those of you who already have Raspbian, and may have installed VLC Media Player from Raspbian’s repositories: I recommend that you remove that version. You can do so by running the command:

sudo apt-get purge vlc

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