Adafruit 9-DOF Absolute Orientation IMU Fusion Breakout - BNO055

My project required a magnetometer for direction. I purchased QMC5883l to achieve accurate directions for my model boat. No matter how many times I tried to calibrate it to get right heading no success. The BNO055 worked right out of the box with the self-calibration feature. Now my navigation system works as expected. The sensor does have a feature where you can do some calibrations if needed but mine worked right out of the box! Incredible HIGHLY RECCOMEND!

If you are building a drone, flight computer, AHRS, or other project that requires accurate Eular or quaternion vectors, skip all the googling for equations and put this thing in "fusion mode" (see bno055 data sheet). The on board mcu will do all the heavy lifting work for you with great accuracy and speed! Another tip is to google up the Bosch videos and app notes rather than the hobby sites. They make it far easier to learn the chip and have a lot of libraries and instructions.

I had tried other 9D0F chips that just output the raw data of all the devices and that required running a Madgwick/Mahoney or similar fusion filter and I couldn't get them to provide stable heading, pitch, roll readings. I was up against a deadline (Halloween) to get it working. Saw this chip and glad I did. This chip already does all that and it is easy to calibrate by just holding it in various positions. Worked great and provides accurate stable readings at up to 100Hz rate.. Now if only my soldering skills were as good as this chip.

One of the best sensors I've come across. If you need position or orientation this is an excellent sensor for that. It's pricey but well worth it given the plug and play nature of this unit for getting the absolution orientation. We used it to stabilize a custom built drone. Building your own sensor from an accelerometer, gyro, and compass with signal processing and filtering would take a lot of effort to get right.

This module is the quality I expect from Adafruit and well done. The Arduino IDE library that supports this module is also very well done, easy to use, and made integration of this module into my project pretty painless.

This is an expensive IMU, there is no getting around that. Once it's set up though and you get your initial calibrations it'll correct itself fairly quickly. One of the only IMU's around that will give you absolute heading, especially with such a small amount of required code. I ended up writing my own Arduino library for this that worked really well. In the end I went with a different processor for my project. Regardless of that, I'd absolutely recommend this IMU even for the price, If you don't want to use the fusion modes though, you should get something else and pay about 1/3 the price.

Claiming that the absolute orientation is misleading. The yaw angle is different every time the device is powered on, and does not represent an absolute geographical direction with 0 degrees pointing to true north. And there are very large yaw jumps when the pitch and roll angles changes across a certain value.

Good bang for your buck. Im actually very surprised at how accurate it is. 110% worth the money