Possible Short Circuit on Jetson Nano

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

I was trying to make a [url]12v 16 channel relay model LM2576 work with the commands through my Jetson Nano (connected on the 5v 4a barrel jack), and I connected the pins [7, 11, 13, 15, 19, 21, 12, 16, 18, 22, 24, 26] on the relay and the last one was connected with its own 12v power supply.

I saw the commands working on my Jetson Nano but the relay wasn’t activated. The relay has two 5v and GND pins each and I saw in a website that it would have to be connected to the Nano to send the logic signal, when I did it aparrently a short circuit happened and now the Nano doesn’t connect to the monitor and it doesn’t send signal to the relay.

Just after the event I could connected to the monitor, but i couldn’t change the resolution of the screen, it was around (640 x something) and now this option is to change the display setting is not available on VNC.

When I access the Nano through VNC it works normally, it’s also normal through SSH.

Is there another way to access directly through the Nano?

Thanks in advance.

Leandro

2

Serial console is one method. See:
https://www.jetsonhacks.com/2019/04/19/jetson-nano-serial-console/

Note that mechanical relays will probably damage the Nano if care is not taken to buffer/isolate the power to the coil.

3

I tried but it didn’t work. Also, the GPIO isn’t working and the nano doesn’t recognize it when I try to use as input or output. I think I’ll have to buy a new one! Thanks!