Description GPIO Reference Card

The GPIO Reference Board is an essential tool for any Raspberry Pi user. This handy little chart makes it easy to identify the function of each pin on the 40-pin GPIO header on your Raspberry Pi . With no markings on the Raspberry Pi board itself, the chart provides a quick and error-free way of finding the correct pin for your project. Simply lay the chart over the GPIO pins, and you'll immediately see which pin is which. It's designed for maximum usability, with clear, easy-to-read markings for each pin.