Raspberry Pi

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Raspberry Pi is a series of small single-board computers. It is widely used in many areas because of its low cost, modularity, and open design. It is typically used by computer and electronic hobbyists.

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Powered USB hub hat? (piefed.social)

submitted 5 days ago by nigel@piefed.social to c/raspberry_pi@programming.dev

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Has anyone found something like a powered USB hub in hat form for a Pi zero 2 w?

The X302 seems like the right idea, although:

It inhibits the use of a header
There isn't enough docs to figure out if I could just trim a few pins and use the header anyway
Will it actually power the pi, or is the power just for the hub and amp

The ultimate goal is a midi synth with USB inputs for the keyboards. It needs a screen and DAC, and for now I'm building with a Pirate Audio headphone amp but the USB needs to power the keyboard too.

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[–] IcedRaktajino@startrek.website 1 points 5 days ago (1 children)

https://www.amazon.com/dp/B01K9IVUYM

I bought that earlier this year. Works great. Have two RTL-SDRs hooked into it along with a Meshtastic node. It mounts under the Pi Zero so you still have your headers available for other stuff.

[–] nigel@piefed.social 1 points 5 days ago (1 children)

Thank you. That looks perfect. I'll give it a shot.

[–] IcedRaktajino@startrek.website 0 points 5 days ago

The only tricky bit is forcing the Pi's USB port into host mode by default. I thought the hub was defective but it worked when I put an OTG adapter into the micro USB port. The default auto detect behavior doesn't work with this since it doesn't connect to the OTG pin.

I had to edit /boot/firmware/config.txt and add under the [all] section:

[all]
dtoverlay=dwc2,dr_mode=host