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OG Xbox Forums => Hardware Forums => General Hardware/Technical Chat => Topic started by: traxtar944 on April 04, 2007, 09:06:00 AM
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Does anyone know? I'm checking the voltages from the positive red wire to the sheilded controller port, and it's always 5.0 volts, regardless of weather or not a controller is plugged in. Therefore, I don't know how plugging in a contoller would trip the relay. Am I doing something wrong?
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actually, th voltmeter reads 0v...which makes sense becaue the port is not connected to the rest of the case. How does inserting a controller into the port close the circuit to trip the relay? I'm not following...and I've tried almost every combo of wires I can think of to trip the relay. I just can't get it to work. Can someone post a picture of their exact wiring? I'm using a 5V SPDT relay from radio shack with the markings OUAZ-AA-1050 is also has the markings 1A 120VAC/24VDC on it. I have a 1N4004 diode on the relay as well. HELP!!!!
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Inside the controller plug, jumper from a black wire to the shielding. Youve probably disconnected it somehow (whether youve made a glowy plug, etc).
Port is isolated from the chassis (which is normally grounded).
Controller plug metal is grounded (jumper wire that I explained).
Controller plug inserted into port -> plug connects shielding to ground, which trips your relay.
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Yes if Im thinking what your trying to do. You can only use mod controllers. Because there are connections in the controller you have to jump, to make it work.
http://www.xbox-scen...ntrollerled.php
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Apparently I can't edit my posts, so I have to vreate a new reply every time I want to say something.
This diagram is not working for me:

I can't really see how it would work because no matter what the port is never grounded to the chassis, so a circuit could never be completed to close the relay.
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Nahh you dont have to modify the controller. But you may have opened it to do another mod, so here's how to test whether it will work or not. Open it up at the controller end, and put one probe of a DMM (multimeter) on the pin leading to the black wire. Take the other probe and touch the metal casing of the controller plug (that goes into the port). If there is a connection, youve messed up inside the Xbox.
If there is no continuity, youll need to open the plug itself (also called a dongle) and solder a wire from the black wire to the shielding somewhere.
The theory is that there is (usually) continuity between the shielding and the black wire, so when you plug it in to the Xbox, the shielding on the port connects with the shielding on the plug which is connected to the black wire which is a ground (thereby turning on your relay and turning off the wireless receiver).
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Put the red probe of a multimeter to any 5v wire (red wire), and put the black probe to the shielding of the controller port, with the controller plugged in. Make sure the port is isolated from the metal case (take it out if you have to). Turn the xbox on. What does the multimeter say?
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Just out of curiosity, what kind of controller are you using? Is it an M$ controller? If not, try a stock M$ controller. Also, do you have any other ports handy to try?
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Try another controller port or set of ports. Somehow, youre not getting a connection between the shielding on the port, and the shielding on the plug. I dont have any ports handy, but there should be little metal tabs that connect the shielding to the plug itself. Make sure theyre pushed down, and that they touch the metal on the plug. Other than that, Im pretty well out of ideas.
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Wait... The controller port is GROUNDING the relay (through the black wire and metal covering), not supplying it with 5v... The 5v for the relay comes from any red wire, like the molex wire.
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Maybe youre not following me here. The way that the case of the port gets grounded is as follows:
- Inside the controller plug, there is a black wire, which is connected to ground when it is plugged in
- Also, inside the controller, the ground is connected to the shielding of the plug (the metal part you see when you look at it) - if it isnt, make it connected
- When you plug in the plug to the port, the little tabs inside the port touch this metal on the plug, connecting the casing of the port to the shielding of the plug, which connects to ground, which turns on your relay.
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The controller plugs I saw always had seven solder connectors:
| | | | | | |
from left to right: shield, ground, signal, signal, +5v, shield. (i may have the ground and +5v signals backwards - use whatever one has a black wire). There was a blob of solder between the shield peg-thing, and the black wires' solder pad. If there isnt a blob, make one (make sure youre soldering ground to the shield though!). If there isnt a peg for the shield, as inconspicuously as possible, solder a wire from the ground connection to the shield somewhere.
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Usually you dont. I find it odd that you had to but... Glad you got it working.