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I have a setup that uses 4 USB cameras, a USB cell modem and a USB weather station. I deal with this by adding a powered USB hub. I just bought a Waveshare USB hat which looked like a tidier solution. The USB ports on the hat are not recognised although the power light comes on and the TxD diode blinks for a little while during boot.

By "not reconised" I mean if I plug a camera in to one of the 4 hat ports, it does not show up in lsusb and when I try to take a picture with fswebcam I get the "no such device" message. I am using dietpi if that matters ....

Ian Boag
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2 Answers2

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I will assume you have this USB hat:
usb hat
Never used it myself, but according to the wiki:

You have to attach the USB HUB HAT to a Raspberry Pi B+/2B/3B with a USB cable

Have you done that?

Community
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Botspot
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I usually from time to time, experience this "USB hub ports/device not recognized" problem whenever I upgrade to a new USB hub, powered or not powered, or a new raspbian version.

I usually solve the problem by replacing the new but "incompatible" USB hub by the old one, or by trials and errors another one from my junk box of more than 10 old hubs.

My quick and dirty conclusion is that the old/new raspbian cannot find or wrongly use a old/new USB hub driver.

Of course I am upset when I buy an expensive USB hub and find it no working ofor Rpi. But it does often happen that I can use the Rpi incompatible new USB hub for my Windows PC, but never vice versa! :(.

References

(1) WavewShare Rpi USB HUB HAT (USB to UART) Board

https://www.waveshare.com/wiki/USB_HUB_HAT

(2) Rpi3 USB Serial Port Drivers (PL2303, Hl340)?

How many serial ports are on the Pi 3?

.END

tlfong01
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