Year: 2008

64-button matrix of elegance

From the MAKE: Flickr pool Spikenzie Labs’ impressive Button64 project offers a whole lotta input for Arduino/etc – Decoding a button press is done with the help of a MCP23S17 port expander from Microchip. This chip has 16 general purpose I/O pins (GPIOs). Eight I/Os are used for the columns and other eight for the […]