My topic is driving Velodyne VLP16 (Puck) and FLIR BlackSky (PoE GigE model) on TX2.
The Velodyne Puck and FLIR camera modules both use ethernet. Therefore, an additional LAN card must be installed in TX2. Some posts on the forum say that using a Realtek LAN card does not cause the problem.
Additionally, a DC 12V output is required to drive the Blackfly module camera. However, as far as I know, the TX2 board does not output DC 12V by default.
Datasheet The TX2 board uses 5VDC/4A as drive voltage, Puck is 9 to 18VDC, Blackfly is 12VDC.
My questions are:
- What if I just install a Realtek autonomous card with 1 or 2 ports to use two independent sensors?
- Would it be wise to use a power supply that supports multiple output voltages to match the driving voltage of the sensor and board?
I don’t know enough about cameras to answer fully, but this is a start.
It’s difficult to understand exactly what the question really is. Normally one uses a single network card, and then a switch for more than one device. In the case of power over ethernet (PoE), you get a switch capable of providing this. It’s pretty much a guarantee that you should not pull all that PoE from the Jetson itself; the PoE switch would have its own supply.
There is also sometimes a bandwidth issue. Some cameras only work with more bandwidth than others. Typically, FLIR is not high enough resolution to require a lot of bandwidth.
If you are asking about stereo vision, or just two sensors somehow synchronized, you should probably provide a lot more detail so someone with that knowledge can answer.
To be honest, I didn’t know much about PoE specifications. Now I understand what it is.
Also, through your answer and surfing the web, I discovered that my TX2 board doesn’t have a PoE switch.
For better information my camera module name is BFS-PGE-19S4C-C. The resolution is 1616 x 1240 @ 131 FPS.
Your answer almost solves my question.
What I think is:
- Connect the PoE camera to the PoE switch (also connected to the TX2 board).
- Receive camera data from the ROS package.
But I have another sensor called LiDAR. I think it’s easy to operate with a PoE switch with multi-input (even though LiDAR has a separate interface). Isn’t it?
That’s something probably meant for @dusty_nv to answer, he knows a lot about AI and ROS, and I have no ability to answer. Generally speaking though, individual programming for LIDAR versus camera probably isn’t an issue, but sometimes when you get into the realm of stereo, with two sensors (camera or otherwise) which must use simultaneous frames, it might be more difficult.
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