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The first post in this series made it clear that the major computational and storage costs to implementing the GaussNewton algorithm come in computing the matrices and . By carefully avoiding materialization of the Jacobian matrix and the residual vector, … Continue reading
I just added some new code to the muCSense library to help calibrate accelerometers and magnetometers. I plan to use the framework to add calibrators for gyros and other sensors too. In this post, I’ll walk through an example sketch … Continue reading
In my last post I walked through the steps you need to take to establish a simple connection with the three sensors on SparkFun’s 9DoF Sensor Stick. If you took those code snippets, dumped them into one file, and ran … Continue reading
[Update 24 Aug 2012: This post gives good detail about how to communicate with the sensors on the 9DoF Sensor Stick, but if you want a cleaner solution (that has been updated for Arduino 1.0), have a look at this … Continue reading
This is the third post in a series. Introduction Simple Methods LeastSquares and Gauss Newton Implementing GaussNewton on an ATMEGA (this post) Error Analysis ? Quick Summary This post is short on explanations, I just wanted to something a … Continue reading
This is the third post in a series. Introduction Simple Methods LeastSquares and Gauss Newton Streaming GaussNewton on an ATMEGA Error Analysis ? In the last post we looked at some simple calibration methods and they didn’t seem to … Continue reading
This is the second post in a series. It starts here. Now let’s look at some of the simplest methods we can use to calibrate an accelerometer. By “simple” here I mean simple all the way through: easy to … Continue reading