GPIO gives high when board is shutdown

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

I am trying to operate four 5v relay with the help of pin 7, 8, 20 & 21 of jetson nano. But facing strange issues. When OS is shutdown, GPIO gives full 3.3v as output, however when it boots and I am trying to give alternate high and low in these pins, it works initially then hangs at a particular state. Whether GPIO pins used to be at high during OS shutdown? And how to handle hanging state issue? Please advice.

3

hello barnwal.r,

there’s default board configurations, please access pinmux spreadsheet to have customization, you’ll also check application notes for Nano’s 40-pin configuration.
please also setup serial console to gather kernel logs, you might share details logs about system hang.
thanks

4

Thanks for the response. Can you inform, how to operate a 5v DC relay with the help of GPIO pin of Jetson Nano? The output logic signal is not able to drive 5v DC relay, however the same relay can easily be operated using other Single board computers. Please advice.

5

hello barnwal.r,

there’s 5V for your usage, you may also check Nano J41 Header Pinout for reference.
thanks