Expand your Raspberry Pi with this small OLED HAT, featuring a 1.3-inch (3.3-cm) OLED display with 128 x 64 pixel resolution, four-way joystick and three buttons (for pin assignment, see "Datasheets & Downloads"). Features • Compatible with all Raspberry Pi models with a 40-pin GPIO interface • pHAT form factor, making it ideal for use with the Raspberry Pi Zero • Communication takes place via either SPI or I2C • Interface can be selected by changing SMD resistors: 4-wire SPI, 3-wire SPI, I2C Specifications • Driver IC: SH1106 • Interface: 4-wire SPI, 3-wire SPI, I2C • Display colour: blue • Resolution: 128 x 64 • Operating voltage: 3.3 V Included in delivery • 1.3-inch (3.3-cm) OLED display • 2x set of screws Downloads https://www.waveshare.com/wiki/1.3inchOLEDHAT