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#21 |
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@geoldr
, the datasheet was only for a specific ic, not the complete board.
but look at this next picture, i marked the 2 copper holes that go through the board to the other side. you see the TP28 ? (testpoint), i marked it in red, if i'm right this testpoint is connected to the same powerline, it's a bigger point to solder to. also look at the ic on the right again , the 4 pins on the right looks to connect also to that same power trace, if i'm right then you can solder a wire across these pins. but you have the board you can look more close if i'm right, and ofcourse you can measure it. ![]() last but not least, did you measure if that power line is 0V when the controller is shut off?
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#22 |
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I see TP28, and it is measuring the correct voltage. When I tried to connect the LED to it, and the ground it still doesnt light up. Not sure if I am doing something wrong here, but it should work.
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#23 | |
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if so, try the led directly onto the battery. it is being said that you don't need a resistor, but even the leds build in have resistors (180ohm if i'm correct). the led should obviously work without a resistor, it wil only shine brighter.
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#24 | |
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Apprentice
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#25 |
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what also could be a possibility is that although it's a power line, this one is not capable of doing too much current.
personally i would still use a resistor in between (100-200ohm) because now the led might draw too much current. also if you have the led connected you might want to measure if voltage drops to zero. |
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#26 |
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@geoldr
, found an alternative point, this should work.
![]() compared a schematic that i found on the net from a dualshock 2 controller. (the led part) in your case TP51 is TP29 (2,80V) , RN3 is RN2. so i think TP29 and ground should give you what you need.
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#28 |
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Apprentice
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Bad news. The point TP29 is constantly powered, so that wont work. TP28 however does work, BUT (and also TP29) its very weak. I can see the LED turn on, but I have to be in a completely dark room to actually see it.
The battery points read 4.04V. The Ground + TP28/29 only reads 2.7V Last edited by geoldr; 11-29-2012 at 09:53 PM. |
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#29 | |
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![]() i looked at my own controllers, i only own dualshock 2 ones, so i can't experiment myself. i would probably give up searching for a decent point and use this next schematic. ![]() R1 should be around 100ohm or less, but i can understand since you have to use a transistor that this is not an ideal solution for you.
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#30 |
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Apprentice
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I'm sorry I don't entirely understand what you suggest I do.
If there are no solder points that are going to give the proper power, I can always just stop with this project. I can live without button lighting up. It seems as though Sony really doesn't want anybody playing around with their controllers. |
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