Instructables

Step 5: Final thoughts

i recommend tagging the ports so you know which key goes where
you can also use flags to tag the keys
if you have different colored rubber protectors you could color-code the keys and divide them into groups by type or location of the lock they open.

enjoy.
 
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FLAWLESSVW2 years ago
This is an excellent idea! I don't have a great place to mount the jacks, so I think I'm going to mount an old router or switch in my free-standing coat closet and plug my keys into it instead. I'll upload an image when I get it finished. Very cool.
dwaal3 years ago
Could there be a way to just light a LED when it is plugged in?
earlye dwaal3 years ago
You certainly could. My approach would (will?) be:

1) make sure one of the wires connects pins 1->2.
2) Hook up either a battery or a transformer for DC power (make sure the voltage is compatible w/ the LED, else you'll need a resistor hooked up in serial w/ the LED) , and connect its positive lead to pin 1 on the jack.
3) Connect the LED to pin 2 on the jack, and to the negative lead from the battery/transformer.

You could also make creative use of a transistor such that it lights up an LED (different one?) when you unplug the keyring. Would be nice for hanging up the key in the dark.
Very cool idea for us geeks. Thanks
chuckk3 years ago
This is a fun idea. 
Why not make these useful loopback plugs?

You could store them plugged into the switch, and your syslog would tell you when they've been removed and returned!

OK, that's a bit crazy, but why not wire them in a meaningful configuration while you're building.

Ethernet Loopback
Pin <-> Pin
1->3
2->6



T-1/E-1 Loopback
Pin->Pin
1->4
2->5





220px-Rj45plug-8p8c[1].png