Last week, Adafruit released the DotStar RGB LED Disk, a 240mm diameter disk packed with 255 individually addressable RGB LEDs. Because blinkey glowey projects are the best projects, [Adam] had to ...

To keep track of a location in a two-dimensional space, two measurements are needed. Most of the time, we would naturally think to do this by the Cartesian method, measuring position along one axis ...

Using coordinate grids to identify and sink an opponent's ships remains a classic childhood pastime. A similar activity can be used to help students as they learn to plot polar coordinates (r, θ).