gamecube controller ports

Discuss modifications you have done or plan to do to your Dreamcast or any other hardware, or discuss devices you want to build. If your console does not work or is acting up, ask about fixing it in here.
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LyingWake
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gamecube controller ports

Post by LyingWake »

Image

thing is, they are no longer working. i need to put a resistor on. thats what it looked like when i did it and it was working at first.
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HomerCIDAL
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Post by HomerCIDAL »

Check your ground. That is usually the problem when installing LEDs in controller ports. Otherwise...very nice job!
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Smiley
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Post by Smiley »

Very nice work, Lyingwake!!! I am jealous...I soo wannna do that mod to both of my cubes, but I'm afraid I'd f them up.
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Post by LyingWake »

Smiley wrote:Very nice work, Lyingwake!!! I am jealous...I soo wannna do that mod to both of my cubes, but I'm afraid I'd f them up.
I wouldn't even be scared of doing it. The ONLY thing you do to the cube is solder the positive and negative legs to the cube.

I soldered them to the bottom of my psu thing and the lights stayed on when the cube wasnt turned on. i need to splice either than fan's or the power source to the mobo's wires somehow and get it so the power is ran only when the cube is turned on.

i also need to put in a resistor cause the damn current it too high so it keeps blowing the first led.
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Post by LyingWake »

i dont know what it is but i cant stop comming to these forums...

anyway i took some quick photos while i was working on the controller leds. i remembers i had some resistors when my 10-pk of 3mm leds i bought on ebay awhile back, so i used one. didn't proove to work out as good as i hoped.

i took the cover off with a $15 screwdriver and gamebit from ebay. before i remembered i should take pictures, i soldered a resistor onto the positive side of my series of leds.

Image

now i strip the wires to the silver stuff on the 12v fan

Image

now its striped.

i solder the positive side of the series on the grey wire and negitive to the black wire - the results we not pretty:

Image
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Post by semicolo »

you should tie leds in parallel two by two, I don't know the voltage of your leds, I read 3.4V for blue leds @ 12mA.
So if you've got two groups in parallel of two leds in serie, it needs 24mA @ 6.8V
so you need a 220 Ohms resistor (1/4W is ok).
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Post by semicolo »

Code: Select all

                     ----|>|----|>|------
                    |                    |
+12 V____/\/\/\/\___|----|>|----|>|----------- GND

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Post by LyingWake »

Say I keep my current series, which is a series of 4 LEDs. I don't doubt you about blue LEDs being 3.4v, but I believe when I bought these small 3mm blue LEDs, they were marked as 3.3v (typical voltage is 3.5v) at 20mA each.

Say I do keep my setup - what ohm resistor would you figure should work nicely? The resistor I used simply stated that they work for 12v and not much else.

EDIT: I got an e-mail from the seller. The resistor I used was a 470ohm 1/4w resistor.
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Post by semicolo »

you mean for just one led you'd use a 470 ohms resistor from a 12V supply ?

The 3.4V was just an example, it depends from the manufacturer.
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Post by LyingWake »

semicolo wrote:you mean for just one led you'd use a 470 ohms resistor from a 12V supply ?

The 3.4V was just an example, it depends from the manufacturer.
The resistor I used (shown in the pictures) was a 470ohm resistor (lol).
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Post by semicolo »

you can't have four leds of 3.3V powered by a 12V supply (3.3 * 4 = 13.2V)
That's simple : tie the leds two by two and use a 270 ohms resistor for each group of 2 leds.
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Post by semicolo »

something like this :
Image
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Post by LyingWake »

That'll do 'er.
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