Arduino ethernet - PoE

Projects General Guidance
1

Evening all

I currently have a project that monitors the local network and it turns on/off LEDs to indicate a network issue. Green LEDs = network fine, Red LEDs = network error. My intention is to install this into my elderly father's house so he can see when his internet is acting up. I'm even contemplating including a relay to automatically power cycle.

Currently it's all WiFi based and connects via a 12v DC wall wort, which is fine for how I'm using it currently at my house.

His home as numerous cat5/PoE runs for his CCTV system. My intention is to put this in an easy to see area by his home entertainment system purely connected to his network via ethernet and powered by PoE.

I've been looking at the Arduino Ethernet Shield 2 which from what I've read has PoE and a "12v output" but I can't find much, if any, documentation on it specifically. I need to extract power from the ethernet connection to power up to 8 LED's and still power the board.

Is this type of setup even feasible or do I have no choice but to run a separate power supply?

2

I don't know your particular needs, but you probably could make adapters for each end of the installed ethernet wiring so you could run a four conductor 10BaseT ethernet setup and use the other four conductors for supplying power.

3

According to the arduino store, that shield is retired. Link here

Also, the PoE module is an add-on you would need to purchase separately

NB: the Power over Ethernet module is proprietary hardware not made by Arduino, it is a third party accessory. For more information, see the datasheet

and that datasheet is here

4

His home as numerous cat5/PoE runs for his CCTV system.

Is this a real PoE setup with 48V on the cat5, or a lower DC voltage that is often mislabeled as PoE?