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Raspberry Pi via POE

I’m thinking of setting up Pi-Hole on a Raspberry Pi and powering via POE from my UniFi switch. Has anyone been powering their Pi this way? Or is it easier to just use the standard power supply?

 

Thanks. 

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Re: Raspberry Pi via POE

The only Pi that works with PoE is the Pi 3B+ model and that one still needs an extra $30 add on card, to make that work. I was looking into that as well. I wanted to build mini PoE powered Pi boxes with 7" LCD screens for watching live camera feeds from around the outside of the house. Still thinking about it.
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Re: Raspberry Pi via POE

I have used 2 different POE HATs for the Raspberry Pi 3 b+

The HAT developed by the RPF and the one developed by NavoLabs

 

https://www.raspberrypi.org/blog/introducing-power-over-ethernet-poe-hat/

 

https://navolabs.com/product/raspberry-pi-3-micro-poe-hat/

 

Both work fine.  Neither have had overheating issues in my experience.  I used the NavoLabs devices for approximately a month.  I had no problems, I don't remember how much power was being drawn.  By the time I received the RPF POE HAT (RPFPH?) I switched my controller to a new device.  Though I have had it running with the RPFPH for at least a month with no problems, it currently is drawing 3.18 watts.  The RPFPH has standoffs and a fan.  The NavoLabs HAT just pushes onto the GPIO and POE pins.

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Re: Raspberry Pi via POE

I used this one when i had my RPi.

 

Micro-USB/Raspberry Pi PoE (Power-over-Ethernet) splitter/adapter 802.3af

Brand: RocksolITParts

9200000055254942 

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Re: Raspberry Pi via POE

It's a real shame the official Pi PoE HAT is only AF and not AT so that you can power more peripherals with it, like touchscreen LCD or something.

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Re: Raspberry Pi via POE


@verisarioc wrote:
The only Pi that works with PoE is the Pi 3B+ model and that one still needs an extra $30 add on card, to make that work. I was looking into that as well. I wanted to build mini PoE powered Pi boxes with 7" LCD screens for watching live camera feeds from around the outside of the house. Still thinking about it.

So it looks like with a HAT the project then goes to about $100. 

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Re: Raspberry Pi via POE

Yea thats kind of the reason why I haven't pulled the trigger and bought the parts for the project idea I had. When the PoE hat is almost more than the Pi itself, its pretty worthless.
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Re: Raspberry Pi via POE

The Hat is about half the price here (If they ever become available again). £28 for a Pi 3B+ and £15 for a POE HAT (excl VAT).

 

Hat https://www.modmypi.com/raspberry-pi/power-1051/power-over-ethernet-1053/raspberry-pi-power-over-eth...

Pi https://www.modmypi.com/raspberry-pi/raspberry-pi-a-plusb-plus23-1015/rpi3-model-b-plus/raspberry-pi...

 

 

There is a much more expensive POE 'hat' but it's no better than a separate POE splitter IMO. 

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Re: Raspberry Pi via POE

I had no idea about that splitter. I am going to look into that ASAP. Thanks!
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Re: Raspberry Pi via POE

I use splitters to power a few pi’s. Not as tidy as a hat but much cheaper and don’t limit what other hats you want to use. 

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Re: Raspberry Pi via POE

I have two Raspberry Pis running on a pair of these: https://www.aliexpress.com/item/New-Power-Over-Ethernet-48V-To-5V-2-4A-Active-POE-Splitter-Micro-USB...

 

This obviously also works for older Pi models.

 

I have had them running for months powered by a Unifi US-8-60W with no issues.

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Re: Raspberry Pi via POE

This adapter opens up a lot more opportunity with the PoE switches. Thanks everyone! You got me excited again for a little project!
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Re: Raspberry Pi via POE

Just remember everyone, if it's not an isolated splitter design, be veeeerrrrrrryyyyyy careful about what else you plug into the Pi, could go KABOOM.....

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Re: Raspberry Pi via POE


@verisarioc wrote:
This adapter opens up a lot more opportunity with the PoE switches. Thanks everyone! You got me excited again for a little project!

The splitter certainly look like a good option. The HAT is too expensive. 

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Re: Raspberry Pi via POE

[ Edited ]

I have bought 2 splitters but the don’t power up the Pi. It looks the dont trigger the Poe on unifi switch 

 

http://www.produktinfo.conrad.com/datenblaetter/1700000-1799999/001720601-da-01-en-POE_ADAPTER_FUER_...

D2C09E46-E0ED-4107-AE17-F0A2CAE45EBF.png

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Re: Raspberry Pi via POE

I'm not sure, but you may need to enable POE on the switch's ports through the Unifi Controller.

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Re: Raspberry Pi via POE

Important note, though! Make sure you DON'T enable 24V passive POE, if your switch is capable of that. You want POE+.

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Re: Raspberry Pi via POE

[ Edited ]

I know. Poe+ is enabled by default on a unifi switch. But the switch is not triggered to switch on the power when the the splitter is plugged in. 

 

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Re: Raspberry Pi via POE

[ Edited ]

I ended up buying the PoE HAT...

 

https://www.raspberrypi.org/products/poe-hat/

 

It works great. For $20 it was definitely worth it. One Ethernet wire to power and run the pi, no PoE splitters or anything. Nice and clean. I also changed the case to a translucent one so I can see the status lights on the board. 

 

D135C90B-ED24-42E0-A001-BE9547B3A4E6.jpeg

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Re: Raspberry Pi via POE

After a review of the posts on this thread, I realise what a good deal the UniFi CloudKey is.

 

I'm surprised nobody has mentioned solar cells(yet). One of the server farms I use is solar powered, and it works.

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