Power supply via PoE ?

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supermario333333
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Power supply via PoE ?

Post by supermario333333 »

Hi @all,

is it planned or currently possible to power the board directly via PoE ?

Thanks
Mario

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Re: Power supply via PoE ?

Post by mdrjr »

No, there's no support for PoE.

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Re: Power supply via PoE ?

Post by venkatbo »

Careful use of this cable set may be an option:
http://www.adafruit.com/products/435?gc ... AuQE8P8HAQ

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Re: Power supply via PoE ?

Post by odroid »

venkatbo wrote:Careful use of this cable set may be an option:
http://www.adafruit.com/products/435?gc ... AuQE8P8HAQ
It seems not to be compatible with the Gbit Ethernet. :(

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Re: Power supply via PoE ?

Post by supermario333333 »

Currently I use for my RASPi this Splitter but I think I can take it also for the C1 (incl. Gigabit network)

http://www.trendnet.com/products/prodde ... _TPE-114GS

Basically I search for a board where I can put the PoE cable direct in - without splitter etc.

cheers
Mario

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Re: Power supply via PoE ?

Post by rosbeef »

Rasperry pi b+ consume upt to 3W-600mA https://fr.wikipedia.org/wiki/Raspberry ... rry_Pi_3) then it's compatible with POE

Odroid hc1 at least 4W up to 14W for 5V. I result in intensity up to 2,8 A. which is not alowded by the POE standard https://en.wikipedia.org/wiki/Power_over_Ethernet

Warning ethernet cable should not support this intensity. :oops:

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Re: Power supply via PoE ?

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Re: Power supply via PoE ?

Post by midnite »

rosbeef, you are mistaken, 4w is nothing for poe. The amps limiting is for the ethernet cable, not for the device 5v power, that's why the poe voltage is normally at least 24v to minimize the amps in the network cable.
odroid can with no problem be powered by poe and a splitter cable.
/Midnite

rosbeef wrote:Rasperry pi b+ consume upt to 3W-600mA https://fr.wikipedia.org/wiki/Raspberry ... rry_Pi_3) then it's compatible with POE

Odroid hc1 at least 4W up to 14W for 5V. I result in intensity up to 2,8 A. which is not alowded by the POE standard https://en.wikipedia.org/wiki/Power_over_Ethernet

Warning ethernet cable should not support this intensity. :oops:

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Re: Power supply via PoE ?

Post by sadarahu »

I purchased the splitter mentioned in a first post and it is not working with XU4. I measure voltage on the barrel plug and it is fluctuating between 0.5V and 6.4V. I do not understand why, or perhaps there is something wrong with that splitter. I used the same Ethernet (no PoE splitter, just PoE adapter on the RasPi) cable for my RASPI and it works fine. Basically is there is 5V on the barrel connector this should work OK. Measure the voltage on the connector directly (no load). I wonder if anybody else can confirm the voltage ?

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Re: Power supply via PoE ?

Post by igorpec »

sadarahu wrote:
Sat May 08, 2021 3:40 am
I purchased the splitter mentioned in a first post and it is not working with XU4.
XU4 draw more current than most of those cheap POE splitter can supply (usually up to 2A, which is not enough).
sadarahu wrote:
Sat May 08, 2021 3:40 am
I measure voltage on the barrel plug and it is fluctuating between 0.5V and 6.4V.
Mine also do that when there is no load. Just not in this range, since its rated at 12V / 2A.
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Re: Power supply via PoE ?

Post by odroid »

XU4 needs very stable 5V/3A power source at least when you do not connect any power hungry USB devices.

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