I am trying to power multiple Raspberry pi model 4s. I would like to use some kind of usb hub for this. Can anyone recommend one that will supply the necessary 3 amps to more than 1 Pi? No other devices like a HD are involved.

thanks,

John

Cursory search isn't showing what you'd need:


I would like to do the same for 4 RPi 4's; however, am resorting to individual PS's.

Issue is, you need 3a per port. Most hubs will not supply this level of amperage. Not sure if you can leverage a 12a supply for a OTS 4-port hub or not.

But, anything can happen, so following as I have a similar interest.

On 02/01/2021 12:14 tacs <kf4hry@...> wrote:

I am trying to power multiple Raspberry pi model 4s. I would like to use some kind of usb hub for this. Can anyone recommend one that will supply the necessary 3 amps to more than 1 Pi? No other devices like a HD are involved.

thanks,

John

On 02/01/2021 15:02 N5XMT <dacooley@...> wrote:

I haven't seen any powered USB Hubs that will provide more than 1.2A per port.? You'd most likely have to wind up building one yourself to do it

On Sat, Jan 2, 2021 at 10:42 AM tacs <kf4hry@...> wrote:

I am trying to power multiple Raspberry pi model 4s. I would like to use some kind of usb hub for this. Can anyone recommend one that will supply the necessary 3 amps to more than 1 Pi? No other devices like a HD are involved.

thanks,

John

That solution will only supply 2.4 amps maximum on any one port with a maximum total of 8 amps. That may just squeak by for a Pi4 if its lightly loaded with no USB devices hooked to the ports. Pi3B/+ models would probably be OK.
I'd just order the USB "C" connectors and make up 2-wire power leads and hook them to a good quality switching power supply.

Perry K4PWO

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I don’t have any experience with this specific model but will be ordering one as soon as they are back in stock.?

If you have a good 12v supply available for your radios, then these are a *GREAT* solution in the shack.

They give 3A 5v very RF clean. I love'em.

73.

_-_-_ Dave AE7TD

How about something like this?


Ten ports at 2.4A each. I don't have any RPi 4s, but I power several RPi 3s and a bunch of other stuff from one.

Michael WA7SKG

tacs wrote on 1/2/21 9:14 AM:

Advanced Astronomers use a lot of USB connected devices to control the telescope gear and have similar issues with power and ports. Google ‘Powered USB Hub for Astronomy”, lots of choices but $$$$$$$

That's good for 10A max, enough for 3-4 pis.
Still think the easiest option is the PSU from an old desktop, will give 20A or so at 5V.

On 02/01/2021 17:47 Michael WA7SKG <wa7skg@...> wrote:


How about something like this?


Ten ports at 2.4A each. I don't have any RPi 4s, but I power several RPi
3s and a bunch of other stuff from one.

Michael WA7SKG

tacs wrote on 1/2/21 9:14 AM:

I am trying to power multiple Raspberry pi model 4s. I would like to use
some kind of usb hub for this. Can anyone recommend one that will supply
the necessary 3 amps to more than 1 Pi? No other devices like a HD are
involved.

thanks,

John

Nigel A. Gunn, ///shoulders.outwards.resolutions tel +1-937-971-0366
Amateur Radio G8IFF W8IFF and GMRS WRBV701, e-mail nigel@... www

That is not sufficient for the Pi 4.?

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So plan 1 would be to use the Anker Usb hub with usb3 to usb C cables and power the PI4s.
Plan 2 is to use a 5vdc power supply and cut one end off the usb C cables and hook the 5vdc and ground wires to the power supply.
I don't think any of the other usb c wires will be needed since the PI will power up now using a usb 3 to C cable which only uses 4 wires
The power supply is 5v and 14 amp so I think it should handle multiple PI4s.
I thank everyone for their suggestions so far and would welcome any comments on my plans.
Thanks,
John

No, the Pi4 and Pi2/3 series are just using the "USB" style connector to deliver 2-wire power. They do not emulate a USB device on the power port. That is why some people had issues with Pi4's and "smart" USB "C" chargers that would refuse to power the Pi. The smart chargers expected the device to negotiate their charging current and the Pi4 couldn't do that.
You'd need to fuse each leg off a common supply for safest use.

Also, be careful with "smart" USB "C" fast chargers/power supplies as they can supply up 15-volts at several amps.