Jetson Nano GPIO Header PINOUT

I2C and UART pins are assigned to that function by default. Also by default, all other pins (except power) are assigned as GPIO. Pins labeled with other functions are recommended functions if using a different device tree. Here’s a spreadsheet map to RPi to help.

Jetson Nano J41 Header
Sysfs GPIO Name Pin Pin Name Sysfs GPIO
  3.3 VDC
Power
1
2
5.0 VDC
Power
 
gpio75 I2C1_SDA
I2C Bus 1
3
4
5.0 VDC
Power
 
gpio74 I2C1_SCL
I2C Bus 1
5
6
GND  
gpio216 AUDIO_CLK
7
8
UART1_TX
/dev/ttyTHS1
gpio48
  GND
9
10
UART1_RX
/dev/ttyTHS1
gpio49 
gpio50 UART1_RTS
11
12
I2S0_SCLK
gpio79
gpio14 SPI1_SCK
13
14
GND  
gpio194 GPIO
15
16
SPI1_CS1
gpio232
  3.3 VDC
Power
17
18
SPI1_CS0 gpio15
gpio16 SPI0_MOSI
19
20
GND  
gpio17 SPI0_MISO
21
22
SPI1_MISO gpio13
gpio18 SPI0_SCK
23
24
SPI0_CS0 gpio19
  GND
25
26
SPI0_CS1 gpio20
gpio13 I2C0_SDA
I2C Bus 0
27
28
I2C0_SCL
I2C Bus 0
gpio18
gpio149 CAM_MCLK
29
30
GND  
gpio200 GPIO
31
32
PWM gpio168
gpio38 PWM
33
34
GND  
gpio76 I2S0_FS
35
36
UART1_CTS gpio51
gpio12 SPI1_MOSI
37
38
I2S0_DIN gpio77
  GND
39
40
I2S0_DOUT gpio78
The J6 40 Pin Header is on the right side in this picture

Pin 1 is marked 1

Notes