Jetson nano module , carrier board (JN30B)

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

This topic is to discuss issues related to the Jetson nano production module with JNB30B carrier board

2

Hi All,
I purchased Jetson nano carrier board JN30B POE PSE, and AUvidea claims that this carrier should be able to power POE camera.

This board has only one RJ45, I used this port for network and works fine, and because there is no other RJ45 ports, I tried to use the same port to power my POE camera, however, I could not get the camera to work.

Has anyone managed to get the JN30B POE PSE to work as a power source for POE camara ?

AUVidea, can you please advise, you advertised this product as POE PSE, how does it work?,

https://auvidea.eu/wp-content/uploads/2019/03/Bildschirmfoto-2019-03-19-um-17.10.27.png

For JB30, in the network row, GbE POE PSE

Please clarify what is needed to connect IP camera directly to the JB30B board

Regards

3

Solved: make sure that the jetson IP subnet mask is the same as the camera

4

Hi,

this is Jurgen from Auvidea. Please be aware that we are introducing a new product, the 38363. It allows to connect 4 PoE cameras to the JN30B. So you can connect 4 IP network cameras to the Nano and have them powered by the Nano system.
https://auvidea.eu/product/38363/

This is a nice solution to bring in 4 HD video sources with little overhead on the Nano system, as the network bandwidth is fairly low (the video is compressed by H.264 or H.265) and the decompression on the Nano uses low resources because of its on chip H.264/H.265 hardware decoders.

The network bandwidth of an H.264/H.265 IP network camera is only 10 to 20 Mbit/s, whereas a GigE camera transfers uncompressed video and therefore uses almost the entire GbE bandwidth (approx. 800 to 900 Mbit/s).

Please let us know, if you have further questions.

Best regards,

Jurgen

5

Thanks Jurgen for your response.
I have another question related to the AUvidea JN30B GPIOs .
https://devtalk.nvidia.com/default/topic/1071336/jetson-nano/auvidea-jn30b-gpios-/

Can you please advise how to interact with those GPIOs , if there is a need for kernel/device tree update would you please provide that

6

Hi, please find the translation of the signals on J22 to GPIO numbers in the list below:

SPI2_SCK (pin 106) → GPIO3_PB.06 → GPIO14
SPI2_MISO (pin 108) → GPIO3_PB.05 → GPIO13
SPI2_MOSI (pin 104) → GPIO3_PB.04 → GPIO12
SPI2_CS0 (pin 110) → GPIO3_PB.07 → GPIO15
SPI2_CS1 (pin 112) → GPIO3_PDD.00 → GPIO232
GEN1_I2C_SCL (pin 185) → GPIO3_PJ.01 → GPIO73
GEN_1_I2C_SDA (pin 187) → GPIO3_PJ.00 → GPIO72

Tomorrow I can explain you, how you can use these GPIO numbers to enable the GPIO function and how to control input and output. Please note that pin 10 on J22 is GND.

Best regards, Jurgen

7

Thank you @Jurgen. The mapping works very well.

There is another question,
I have a POE camera connected directly to the JN30B POSE/PSE socket. And connected the JN30B to a USB wifi adaptor to connect to the internet.

The problem is , I can not ping this JN30B from any other computer on the network. However if I took the POE camera of the JB30B, I can ping the JN30B normally.
To summarise, the issue is mainly when you have a POE camera and wifi connections to JN30B, this JN30B can not ping other devices on the same network, and this JN30B can not be pinged from the rest of the network as well
Can you please help?

8

This is great.

Your network problem sounds a little strange. Please try the following, to locate the problem:

  1. run “ifconfig -v” for:
  • the PoE camera and the wifi stick are connected
  • only the wifi stick is inserted
    and please post the result
  1. power the PoE camera not by the JN30
  • use an AC adapter for the camera
  • or use a PoE injector to power the camera

Please let me know what you find.