I thought I was missing something... I was hoping to get away from the transformer chip to simplify things / lower costs...
seems the cheapest jack I can find here is the following:
Bel Stewart MagJack SI-60002-F (no LED indicators)
of if you insist on the LED's - and want an easy to prototype option, check out sparkfun - RB-Spa-1054
I'll try make time to draw something up later, hopefully help a few other people out with similar needs that might be as new to this as I am 
Is this not sufficient for what I would need? with 51 ohm resisters and 100 nF ceramic capacitors?
@ccs-hello the easyjack is just a RJ45 connector which can be soldered to - is it not? or is there more to it? for my application I am happy to terminate to screw connectors, which may simplify things for my application. I am purely concerned with what the safest way is to connect the 2 pairs of wires within a CAT5 cable to the ethernet pins of the Omega2
and I am still not clear what is meant by C.T.?
I literally juuust clicked.... feel like a bit of an idiot for my wording... hehe
so all I effectively need is 4 resistors and 2 caps over the TX and RX pins accordingly - bridged to ground.
Do I need the cap to the TX/RC CT? I assume not? I am just not 100% clear what the 3rd cap on the following page goes to on the following:
See soldered image at the bottom of this page... (not sure about the cap at theh top of the row of resistors)
Just not too sure what pin the TC/RX CT item relates to as per the pin-outs of the onion
Literally on my way to the electronics shop to buy some caps and resistors to test - hopefully I don't cook any components tonight...
That helps even more!
My initial plan was to inject DC down 1 of the unused ethernet pairs, and then use a buck converter to drop down to the 3.3v for the Omega2, so (assuming there isn't a reason that won't work) all I need is a way to safely connect the ethernet cables to the omega
I'm not concerned with notification LED's either, so I am assuming I could omit those too?
Is there a way of safely achieving this with just passive components?
@ccs-hello - thank you so much - that looks a lot more like what I am trying to achieve.
Is there any chance you have a schematic of what you put together?
I want to connect my omega2 devices direct to my network switches - but I don't have space for the dock and expansion (and also can't justify additional $30 per setup considering I need to do this 18 times)
Any pointers would be greatly appreciated!
I'm looking to package a bunch of onion omega 2 boards in some restrictive space, looking through the forums I saw mention of something similar as a "debrick" option
My plan is to run DC PoE and terminate the ethernet cables straight onto the ethernet TX and RX pins.
Before blowing my devices, I'd like to confirm how safe this is? the documents on
"Reflash Omega without Ethernet" seem to have capacitors between the ethernet connection and board, and also have some 2v and ground connectors bridged to these pins with 100ohm resistors (circuit diagram from "debrick with serial?"
the Omega2 seems to only have 3.3v for one thing, and for another - I am not too sure if I should be adding voltage to my switch (I plan on having 18 of these things on the network around the house)
So... can I just connect the ethernet cables direct like this:
Or do I need the capacitors in line like this? (and will the polarity of the caps matter?)
