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I'm about to start a robotics project based around the Jetson Xavier, and I'll need to plug a number of USB devices into it (the Xavier has an x8 PCIe slot). Does there exist a PCIe expansion card which: a. Offers full compatibility with Ubuntu 18.04 b. Doesn't require a separate power connection if you aren't plugging high-power devices into it (seriously, WTF is up with that - I thought the PCIe standard was supposed to support something like 75W of power through the card) Thank you.
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Oct 19, 2018 04:24
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I can't offer specific recommendations but I'm pretty sure that USB controllers all follow the same standard so they don't require specific drivers, the OS should instead have a generic driver that should work with any compliant controller.
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Oct 21, 2018 02:33
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Cockmaster posted:I'm about to start a robotics project based around the Jetson Xavier, and I'll need to plug a number of USB devices into it (the Xavier has an x8 PCIe slot). Does there exist a PCIe expansion card which: Are they USB cameras? How much actual bandwidth do you need from the devices / your USB ports?
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Oct 22, 2018 07:52
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movax posted:Are they USB cameras? How much actual bandwidth do you need from the devices / your USB ports? Yeah, they're depth cameras. I'm not sure exactly how much bandwidth each one uses, but it's probably a lot. Edit: For one in particular (The Zed from Stereo Labs), the manufacturer explicitly advises against plugging it into a USB hub. Cockmaster fucked around with this message at 21:33 on Oct 26, 2018 |
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Oct 26, 2018 02:08
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https://www.amazon.com/gp/product/B015CQ8DCS This card has four separate USB 3.0 controllers connected to an on-board PCIe switch, so each port has the full bandwidth available. It also says it's Linux compatible.
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Oct 27, 2018 14:34
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Oculus's head tracking system uses a type of camera that should be similar to what you're using and their support specifically recommends cards based on the Fresco Logic FL1100EX chipset. That support article links to this particular card, though it doesn't meet your "no additional power connector" requirement. (As an aside, just checking the PCIe spec it looks like the reason most cards require an external power connector is because the PCIe slot only supplies 12v and 3.3v with no direct 5v power, so the cards without an external power connector would need an onboard 12v to 5v voltage converter which probably adds more cost than a simple Molex or SATA power connector.) Mr.Radar fucked around with this message at 20:30 on Oct 27, 2018 |
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Oct 27, 2018 20:25
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SamDabbers posted:https://www.amazon.com/gp/product/B015CQ8DCS Thank you, that looks good.
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Oct 28, 2018 01:44
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