SPI working in a 18F452 but not in a 18F4520

This is the beginning of a multi-part, multi-author series on how to build your own robotics platform called C-BISCUIT, an acronym for Collaborative Bot with Integrated System Core, Unmanned Interactivity, and Telemetry -- based on the Wandboard Quad computer.

Occipital's structure sensor works with iPads and other devices to create 3D models of the environment. This article takes a look inside one.

This BIG piano will help exercise the mind and body! All you need is a few buttons, a speaker, and some dancing shoes.