USB Host Shield

Reverses the usual USB relationship: instead of the Arduino being a device plugged into a computer, this shield lets the Arduino act as the host so USB peripherals plug into it. Connect a keyboard, mouse, game controller, barcode scanner or even an Android phone and read from it directly in your sketch. The USB Host Shield 2.0 library provides drivers for most common device classes. Connect USB keyboards, mice and gamepads directly to Arduino; Supports PS3, PS4 and Xbox controllers via library; Reads USB barcode scanners for inventory projects; Well-documented open-source library