Making a Ethernet Cable Question?

fleetingmind

So I'm trying to make my first ethernet cable. 
Cable I have has 4 cables (2 wires twisted together for each so 8 total) - green & white, blue & white, brown & white and orange & white.

Do I untwist the cables or crimp as they are?

When the cables go into the end connector do they have to go in a certain order and if so does the other end have to match that order?

Cheers

Sandtree

Depends on if you need a cross over cable or not

Neil_Jones

fleetingmind said:

So I'm trying to make my first ethernet cable. 
Cable I have has 4 cables (2 wires twisted together for each so 8 total) - green & white, blue & white, brown & white and orange & white.

Do I untwist the cables or crimp as they are?

When the cables go into the end connector do they have to go in a certain order and if so does the other end have to match that order?

Cheers

Here you go:

https://www.electronicproducts.com/how-to-create-your-own-ethernet-cross-over-cable

fleetingmind

Sandtree said:

Depends on if you need a cross over cable or not

Haha erm not sure.
The cables are to run from sky Q and mini boxes to router. Got to do one for Sky Q and 2 x mini boxes.

Sandtree

If its going to a router then you dont want a cross over cable.... anything going via a router, switch or similar should be straight wired, cross over cables are used for connecting two things directly (eg connect two computers directly).

Convention says to use colours to certain pins, it would work if you just ensure pin 1 goes to pin 1 but if there is any degradation at all for not following the standard wiring I've no idea... there is a lot of snake oil when it comes to cables (thinking the £300 power plugs they sell for hifi which magazines rave about but others argue its going to make no difference to the £1 kettle lead from Poundland)

unforeseen

TBH it's probably cheaper to get the cables off Amazon ready terminated. 
By the time you take into account buying a crimping tool, crimps and, unless you are sure you can get it right first time, a tester then buying ready made is a better option. 

fleetingmind

Sandtree said:

If its going to a router then you dont want a cross over cable.... anything going via a router, switch or similar should be straight wired, cross over cables are used for connecting two things directly (eg connect two computers directly).

Convention says to use colours to certain pins, it would work if you just ensure pin 1 goes to pin 1 but if there is any degradation at all for not following the standard wiring I've no idea... there is a lot of snake oil when it comes to cables (thinking the £300 power plugs they sell for hifi which magazines rave about but others argue its going to make no difference to the £1 kettle lead from Poundland)

Thanks. So doing it straight would be fine for sky Q and sky mini boxes?

Neil_Jones

fleetingmind said:

Sandtree said:

If its going to a router then you dont want a cross over cable.... anything going via a router, switch or similar should be straight wired, cross over cables are used for connecting two things directly (eg connect two computers directly).

Convention says to use colours to certain pins, it would work if you just ensure pin 1 goes to pin 1 but if there is any degradation at all for not following the standard wiring I've no idea... there is a lot of snake oil when it comes to cables (thinking the £300 power plugs they sell for hifi which magazines rave about but others argue its going to make no difference to the £1 kettle lead from Poundland)

Thanks. So doing it straight would be fine for sky Q and sky mini boxes?

If in doubt... straight. 

baza52

unforeseen said:

TBH it's probably cheaper to get the cables off Amazon ready terminated. 
By the time you take into account buying a crimping tool, crimps and, unless you are sure you can get it right first time, a tester then buying ready made is a better option. 

not if you want to poke the cables between walls without drilling an oversized hole.

Mickey666

Sandtree said:

Depends on if you need a cross over cable or not

Cross-over cables are rarely required these days because most LAN interfaces are auto-sensing.  In the unlikely event that one is required, just buy a cross-over adapter.  This way the cables won’t need to be labelled because they can all be assumed to be straight-through.

Heedtheadvice

"When the cables go into the end connector do they have to go in a certain order and if so does the other end have to match that order?"

You should follow the standard given in Neil's link. It gives straight as well as crossover connections. It is important to construct with each wire in the twisted pairs going to the correct pins. They are twisted together for best signal transmission and interference rejection. Just follow end A connections on both ends.

No snake oil in that! it is just basic electronics......unlike a lot of the hype from sales persons and those who think they can hear a difference when non exists in the hope of getting perfection or having too much dosh!!