Universal Network Adaptor

[delphijustin]

heres my universal network cord,  mine uses a special switch which non only can be crossover or straight-trew it can disconnect and be loopback, BUT THE CIRCUIT I GIVE YOU ONLY DOES CROSSOVER AND STRAIGHT TREW.


Youtube video http://youtu.be/nFIyUfUTksE

[mariush]

What the hell... what potato did you use to record that?  Can't see anything in that video...

Gigabit network cards will auto-detect the type of cable.

If you really want to do something... get a small prototyping board with 0.1" holes, cut a small piece of it... get 4 jumpers and a 2 row 8 way header

O - O
G  - G
WO - WO
WG - WO
O - G
G - O
WO-WG
WG-WO

Want crossover, just move the 4 jumpers to the bottom 4 positions.

You can use some heatshrink to lock the wires to the protoboard and give it some strength, and in addition, you don't have to untwist the cable so much as to cause signal issues.

jumpers with handle http://uk.farnell.com/te-connectivity-amp/881545-1/jumper-amp-modu-with-handle-0-4gold/dp/4218164
2 rows 8 contacts  (picture doesn't match, it's same for 2 rows , x contacts) : http://uk.farnell.com/multicomp/mc34767/header-2-row-r-angle-8way/dp/1593450
proto board (cut two columns with 8 rows) : http://uk.farnell.com/roth-elektronik/re310-s1/labor-card-cem3-3holepads/dp/1837352

[mikes]

You've got the idea, but the implementation isn't good. It won't work with gb Ethernet, which uses all 4 pairs. The switches (or even jumpers) will present a bump in impedance, so it's likely to cause errors, especially at 100 mb and long runs.

Just get a crossover cable and use that when needed. Better yet, get a switch with auto MDI/MDI-X, so you don't have to worry about it.

[delphijustin]

I guess for 1GB cables will need a 8PDT switch. So thats why my new laptop can hook to another computer in Straight-trew mode. Well it works pretty good, the switch i used is an old one. That might be a good idea using jumpers maybe when i get some i will make a video response.

[mariush]

1gbps cables don't need any kind of switching, the network cards and switches auto-detect the type of cable and work with any type of cable at 1 gbps. 

Network card to network card, network card to switch/hub, it doesn't need any messing about with the wires.

[kripton2035]

it's been at least 10 years I don't bother anymore with cross or not network cables ! the cards do it alone.