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Concepts

   Sensing the G-Vector     
Overview of how to calculate pitch and roll by using a three axis accelerometer.
 

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Compassing
Overview of Compassing Calculations
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Required Precision for GPS Calculations
This article is an investigation into whether single or double precision floating point numbers are required to accurately represent a position on Earth.

 
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Embedded Math Optimizations
Discussion on the optimization of math algorithms for speed relating to embedded systems