⚙️ GPIO Pin Overview
The following GPIO pins are accessible through API:
GPIO
Power-on Pull, alternate Functions, Header Pin
2
PullUp I2C1 SDA 3
3
PullUp I2C1 SCL 5
4
PullUp 7
5
PullUp 29
6
PullUp 31
7
PullUp SPI0 CS1 26
8
PullUp SPI0 CS0 24
9
PullDown SPI0 MISO 21
10
PullDown SPI0 MOSI 19
11
PullDown SPI0 SCLK 23
12
PullDown 32
13
PullDown 33
16
PullDown SPI1 CS0 36
17
PullDown 11
18
PullDown 12
19
PullDown SPI1 MISO 35
20
PullDown SPI1 MOSI 38
21
PullDown SPI1 SCLK 40
22
PullDown 15
23
PullDown 16
24
PullDown 18
25
PullDown 22
26
PullDown 37
27
PullDown 13
35
PullUp Red Power LED *
47
PullUp Green Activity LED *
Hardware interfaces for the Raspberry Pi 2 and Raspberry Pi 3 are exposed through the 40-pin header J8 on the board. Functionality includes:
- 24x - GPIO pins
- 1x - Serial UARTs (RPi3 only includes mini UART)
- 2x - SPI bus
- 1x - I2C bus
- 2x - 5V power pins
- 2x - 3.3V power pins
- 8x - Ground pins