Raspberry Pi GPIO Pinout
40-Pin GPIO Header (Pi 2/3/4/5)
| Pin | Name | Function | Type |
|---|
| 1 | 3V3 | 3.3V Power | Power |
| 2 | 5V | 5V Power | Power |
| 3 | GPIO2 | I2C1 SDA | I2C/GPIO |
| 4 | 5V | 5V Power | Power |
| 5 | GPIO3 | I2C1 SCL | I2C/GPIO |
| 6 | GND | Ground | Ground |
| 7 | GPIO4 | GPCLK0 | GPIO |
| 8 | GPIO14 | UART0 TX | UART/GPIO |
| 9 | GND | Ground | Ground |
| 10 | GPIO15 | UART0 RX | UART/GPIO |
| 11 | GPIO17 | GPIO | GPIO |
| 12 | GPIO18 | PCM CLK / PWM0 | GPIO/PWM |
| 13 | GPIO27 | GPIO | GPIO |
| 14 | GND | Ground | Ground |
| 15 | GPIO22 | GPIO | GPIO |
| 16 | GPIO23 | GPIO | GPIO |
| 17 | 3V3 | 3.3V Power | Power |
| 18 | GPIO24 | GPIO | GPIO |
| 19 | GPIO10 | SPI0 MOSI | SPI/GPIO |
| 20 | GND | Ground | Ground |
| 21 | GPIO9 | SPI0 MISO | SPI/GPIO |
| 22 | GPIO25 | GPIO | GPIO |
| 23 | GPIO11 | SPI0 SCLK | SPI/GPIO |
| 24 | GPIO8 | SPI0 CE0 | SPI/GPIO |
| 25 | GND | Ground | Ground |
| 26 | GPIO7 | SPI0 CE1 | SPI/GPIO |
| 27 | GPIO0 | ID EEPROM SDA | I2C |
| 28 | GPIO1 | ID EEPROM SCL | I2C |
| 29 | GPIO5 | GPIO | GPIO |
| 30 | GND | Ground | Ground |
| 31 | GPIO6 | GPIO | GPIO |
| 32 | GPIO12 | PWM0 | GPIO/PWM |
| 33 | GPIO13 | PWM1 | GPIO/PWM |
| 34 | GND | Ground | Ground |
| 35 | GPIO19 | SPI1 MISO / PCM FS | SPI/GPIO |
| 36 | GPIO16 | GPIO | GPIO |
| 37 | GPIO26 | GPIO | GPIO |
| 38 | GPIO20 | SPI1 MOSI / PCM DIN | SPI/GPIO |
| 39 | GND | Ground | Ground |
| 40 | GPIO21 | SPI1 SCLK / PCM DOUT | SPI/GPIO |