[Solved] USB ports not functioning?

StereoPi hardware discussion
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dtbaker
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Joined: Sat Sep 21, 2019 12:26 pm

[Solved] USB ports not functioning?

Post by dtbaker » Sat Sep 21, 2019 12:33 pm

Hello,

When I attempt to plug a USB keyboard into the StereoPi nothing happens. I have tried:

- (all these things work fine on other Pi boards, just not the StereoPi)
- multiple keyboards
- different power packs
- different operating systems, thinking maybe USB was disabled for some reason?
- different SD cards
- wiggling / half inserting usb cables, thinking something might not be making contact, pins look fine though
- plugging a USB hub into the StereoPi - it actually lights up so it's getting power, just no data?

There are no errors visible during boot, it just drops me to a flashing login prompt. Making it a little difficult to set up.

Am I doing something really silly here?

Any ideas on what I should look for or how to debug this further?


Edit: ~I also noticed that flicking the power switch has no impact, it's always on in any position.~ Power switch works fine when powered by a 5v power brick, not USB.

Edit: I also just noticed the ethernet lights don't turn on when plugging a cable in (works on other Pis). Is there something that controls Ethernet / USB that could be busted?

Thanks!
Dave

dtbaker
Posts: 2
Joined: Sat Sep 21, 2019 12:26 pm

Re: [Solved] USB ports not functioning?

Post by dtbaker » Sat Sep 21, 2019 12:50 pm

Seems USB ports work fine when powered by a 5v desktop power supply, not via the micro usb cable.

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Realizator
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Re: [Solved] USB ports not functioning?

Post by Realizator » Sat Sep 21, 2019 4:39 pm

Dave, I'm glad you've solved this issue!
Cite: "Please let me dispel the myth: The MicroUSB on StereoPi is not for power as with the classic RaspberryPi."
Full article in our Wiki is here: how to connect power.
Eugene a.k.a. Realizator

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Re: [Solved] USB ports not functioning?

Post by Realizator » Sun Sep 22, 2019 10:15 am

UPD> Please notice, that Raspberry Pi foundation recommends at least 2A power adapter. So if you power up your StereoPi from your desktop computer, please check you use USB 3 connector, as USB 3.0 provides 0,5A only. We recommend to use external power adapter, like you use for your tablet or phone charge. Our experiments shows, that with S.L.P. image, 2 cameras and WiFi dongle StereoPi consumes from 0.5-0.7 and up to 1-1,2A while livestreaming video. Here is a discussion on this forum.
Eugene a.k.a. Realizator

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