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Super IMU

Redundant IMU

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I work a lot with drones. I made some custom drones.
The big issue I encountered is getting an extra precise IMU which is robust against mechanical vibration, high accelerations and noise.

In September 2018 Bosch has released a new 6DoF IMU (accelerometer and gyroscope) the BMI088, which is the successor of the BMI055. It is specific to drones with filter against mechanical vibrations.

I said, let's give it a try for my first project in 2019!
For my drones, I am designing a 13x redundant IMU. Each one will be configured with different sensitivity.
The data will be gathered using the SPI link and processed using Kalman like filter.

  • 13 × BMI088 6DoF accelerometer and gyroscope
  • 1 × MLX90393 Magnetometer compass
  • 1 × BME280 Pression, humidity, temperature sensor

  • PCB design - part 1

    Laetitia BEL01/08/2019 at 09:01 0 comments

    The first look of the PCB design has just finished.
    The components have been positionned.

    To limit the effect of the vibrations, make the vibration waves non uniform on the PCB board, some asymmetric holes has been set.

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