No Connection to Nvidia Jetson Xavier NX Board

Controllers
1

Dear Community,

I work with a Unitree A1 robot, equipped with a Jetson Xavier NX and a Raspberry Pi, and encountered problems with connecting to the Jetson-Board.

With my current settings, the board ran properly for the last 2 months.
However, now, the following problems occur:

  1. no connection via SSH (WLAN or LAN) is possible, even though the robot’s WLAN/LAN works and I can connect to the Raspberry Pi with it.
  2. The Jetson board is not visible from the Raspberry Pi.
  3. connecting a HDMI cable to the corresponding plug does not deliver a signal. If I do the same with the Raspberry Pi, it works properly.

Seems like a hardware issue to me. Has anybody had similar problems?

Thank you for any help

2

Hi @QuadrupedUser1,

Could you please send a video of this issue? and the Robot ID as well!

3

The Robot ID is A1-1447.

I’m not sure what to include in the video.
If we connect the serial connection with the supplied USB-cable to check on the boot-loader, the nvidia board doesn’t transmit anything.
If you want something specific recorded on video let me know.

4

It would be sufficient to record the screen when trying to ssh and perhaps using the command nmap -sP 192.168.123.* to ensure that it is not available in the network furthermore, a video including connection via HDMI and null screen showing.

5

We tried both, the ssh connection and the network scan via nmap.
As expected, we receive the result below.
Since we could not upload a video, we uploaded a screenshot.
We hope, this is sufficient.

Note:
192.168.123.161 is the raspberry pi, which is available.

ssh_nmap

Additionally, you can find a screenshot of the display, while failing to connect via HDMI:

HDMI
HDMI3264×2448 482 KB

1 Like
6

I’ll discuss this issue with Unitree guys and get back to you once we get some information.