https://github.com/9peo0xnd/m5gray_mpu6886_bmm150

This is M5Stack Gray MPU6886+BMM150 examples for arduino IDE
https://github.com/9peo0xnd/m5gray_mpu6886_bmm150

arduino-ide bmm150 m5stack-gray m5unified mpu6886 sensor

Last synced: about 1 month ago
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This is M5Stack Gray MPU6886+BMM150 examples for arduino IDE

• Host: GitHub
• URL: https://github.com/9peo0xnd/m5gray_mpu6886_bmm150
• Owner: 9PEO0xNd
• License: other
• Created: 2021-01-09T04:06:44.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2024-02-25T06:15:23.000Z (10 months ago)
• Last Synced: 2024-02-25T07:22:53.879Z (10 months ago)
• Topics: arduino-ide, bmm150, m5stack-gray, m5unified, mpu6886, sensor
• Language: C++
• Homepage:
• Size: 359 KB
• Stars: 17
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# M5Gray_MPU6886_BMM150 for arduino IDE

This is M5Stack Gray MPU6886+BMM150 examples for arduino IDE.

![HSI.jpg](images/hsi_picture.png)

![orientation](images/Gray_Mpu6886+bmm150_orientation.png)

---

`BMM150class.cpp` and `BMM150class.h` were forked from omegatao's repository. Original link (platform IO based)

https://github.com/omegatao/M5StackGrey_MPU6886_BMM150_AHRS_sample

## What's New ?

- Added soft iron distortion correction.

>[Simple and Effective Magnetometer Calibration](https://github.com/kriswiner/MPU6050/wiki/Simple-and-Effective-Magnetometer-Calibration)

>Kris Winer edited this page on 15 Aug 2017 · 17 revisions

- Added gyro offset calibration. However, built in `M5.IMU.setGyroOffset(Ωx0,Ωy0,Ωz0)` is not used.

  It starts automatically. (still has gyro drift. but reduced a little)

- yaw tweaked 90 degrees (button A,B,C are front side)

## Usages

- Copy BMM150 folder into your arduino libraries folder.

- Some .ino files are required lovyanGFX and lovyanlancher.

- M5Stack-SD-Updater ~~version must be 0.5.2 (1.x or higher will not work in my code. I don't know why) 1.0.x is OK now.~~ Verified arduino 1.8.15

- tilt_compass.ino is traditional tilt-compensated compass. Not using 9-AXIS quaternion.

- Do not move or tilt your M5Stack during the gyro offset calibration.

- Do not use this unit in situations involving safety to life.

- ~~- Not supported M5Unified library. (Consider M5Stack.h library depandency such as I2C, etc.)~~

- Added example code using M5Unified library.

## References

- https://github.com/BoschSensortec/BMM150-Sensor-API

- https://github.com/m5stack/M5_BMM150

- https://github.com/m5stack/M5Unified

- https://x-io.co.uk/open-source-imu-and-ahrs-algorithms/

## Revision history

- 2021-Jan Initial release.

- 2021-Feb updated Readme.md, added built in sensor's orientation images.

- 2023-Jan Modified I2C part and added example code using M5Unified library.

- 2024-Feb added destructor and year 2024 Ehou-roll.

Have fun !