android

David Sachs of InvenSense explains how gyroscopes, accelerometers and compasses work on their own and together, demonstrated on a modified Android handset. He covers sensor fusion algorithms and why rotation math such as Euler angles matters.

Rob Landley compares Toybox and BusyBox and surveys options for embedded system command-line tools, including GNU. He also tells the story of leaving BusyBox, Toybox becoming Android's command line, and licensing.