LED Game Cartridge

Trying to get homebrew running on your PSP? Want to add a screen light to your Game Boy? Trying to figure out how to work your GP2X? By popular demand, discuss it in here! (This forum is for pre-built handhelds, NOT custom made portables!)

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Gaara Ichimaru
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Re: LED Game Cartridge

Post by Gaara Ichimaru »

lucidPerspective wrote:Are you sure you changed the size of the pics? they still look the same to me lol

edit: I'm thinking you might have a hard time using that wire and getting it to all fit back into the closed cartridge. you only need thick wire like that if your putting lot's of current/voltage through it. for an LED job like this the wire from an IDE cable should be fine (IDE is 28AWG, bigger number is smaller) ..that wire could just look bigger than it actually is though lol
Try refreshing the page, that's what I had to do :)

Also, it's about a millimeter thick, may look bigger in the photo, i have an old USB mouse that broke, could I strip the wires out of the usb cord and use them? They are very thin, copper and multi-coloured. If not my grandpa is an electrician, so I'm assuming he may have some wires :)

-Gaara
Gaara Ichimaru
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lucidPerspective
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Re: LED Game Cartridge

Post by lucidPerspective »

Pics are still showing big for me :? ah well, doesn't bother me.

If it fit's, great, otherwise try something else. any wire should do lol, at least with the wire you have you'll be able to get it working, and then if it doesn't close, you'll get some more practice removing it, and redoing it with thinner wire :D
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Gaara Ichimaru
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Joined: Tue Jul 27, 2010 1:40 am

Re: LED Game Cartridge

Post by Gaara Ichimaru »

lucidPerspective wrote:Pics are still showing big for me :? ah well, doesn't bother me.

If it fit's, great, otherwise try something else. any wire should do lol, at least with the wire you have you'll be able to get it working, and then if it doesn't close, you'll get some more practice removing it, and redoing it with thinner wire :D
I was wondering whether or not the LED will only come on when the game is plugged in, because I don't want it on all the time, only when its in the Gameboy.
Gaara Ichimaru
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lucidPerspective
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Re: LED Game Cartridge

Post by lucidPerspective »

well think about it, the gameboy game cartridge only get's power (given from the gameboy) when it's plugged in. so if you wire the led to the game cartridge, what do you think will happen?
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Gaara Ichimaru
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Re: LED Game Cartridge

Post by Gaara Ichimaru »

lucidPerspective wrote:well think about it, the gameboy game cartridge only get's power (given from the gameboy) when it's plugged in. so if you wire the led to the game cartridge, what do you think will happen?
Lol, oh yeah good point! :lol:

The only reason I wasn't sure was because I know there is a small battery in the cart and I wasn't sure weather the LED would drain that.

Other question is do I solder the wires to the little holes above the pins 1 and 32? and it's definitely positive to 1 and negative to 32? sorry, I just really don't want to mess up too bad first time XD

And thanks again so much Lucid for putting up with me and helping so much :)

-Gaara
Gaara Ichimaru
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lucidPerspective
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Re: LED Game Cartridge

Post by lucidPerspective »

Good point about the internal battery.. I'm almost sure that that battery would not be connected to the power rail that get's power from the gameboy, because if it was, each time you put in your game cart the memory chip would get too much voltage and fry itself. but I haven't actually opened up a game cart so I can't be sure. but I'm 99% sure without looking because it just wouldn't make sense if they were joined lol

I think someone posted a link to an instructable on the first page of this thread. I can't help you with the specifics, like which pins, because I haven't done this mod myself. So I'd say follow that instructable and you'll be sweet
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Gaara Ichimaru
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Re: LED Game Cartridge

Post by Gaara Ichimaru »

lucidPerspective wrote:Good point about the internal battery.. I'm almost sure that that battery would not be connected to the power rail that get's power from the gameboy, because if it was, each time you put in your game cart the memory chip would get too much voltage and fry itself. but I haven't actually opened up a game cart so I can't be sure. but I'm 99% sure without looking because it just wouldn't make sense if they were joined lol

I think someone posted a link to an instructable on the first page of this thread. I can't help you with the specifics, like which pins, because I haven't done this mod myself. So I'd say follow that instructable and you'll be sweet
Yeah, that's what I was thinking.

And I did find a link about it to instuctables but because I don't pay I don't get to see high res pictures, I'll ask my grandpa and try and figure it as I go I guess... TBH it wouldn't make much sense if you had to solder the wires directly to the pins as then it would be impossible to close the cart and it wouldn't go into the GBC's slot...

EDIT: Signed up free to instuctables but the guy still makes it a lot harder than it needs to be ;)

Thanks,

-Gaara
Gaara Ichimaru
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lucidPerspective
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Re: LED Game Cartridge

Post by lucidPerspective »

you could trace those pins back to the first component they connect to and solder your wire to that. because that would be the same as soldering directly to the correct pin, as long as theres no components between your wire and the pin it'll work fine. your right, soldering directly to the pins won't work because then the cart won't go into the gameboy. I assume the picture you saw was just showing were the power comes in, and where the ground pin is. so yea, hopefully you can figure it out!

Also, there will be many places that are GROUND inside the cartridge, so you don't necessarily have to go straight to that pin. just use a multimeter to find another point in the cartridge that's GND and you can solder your ground side of the LED to that.
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Gaara Ichimaru
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Re: LED Game Cartridge

Post by Gaara Ichimaru »

lucidPerspective wrote:you could trace those pins back to the first component they connect to and solder your wire to that. because that would be the same as soldering directly to the correct pin, as long as theres no components between your wire and the pin it'll work fine. your right, soldering directly to the pins won't work because then the cart won't go into the gameboy. I assume the picture you saw was just showing were the power comes in, and where the ground pin is. so yea, hopefully you can figure it out!

Also, there will be many places that are GROUND inside the cartridge, so you don't necessarily have to go straight to that pin. just use a multimeter to find another point in the cartridge that's GND and you can solder your ground side of the LED to that.
Ahhh that feel so relieving to finally get the best, most perfect piece of advice yet! Thank you very much :)

I think I'm pretty ready to attempt it, so I'll try to be methodical and I'll post more pictures up soon as :)

-Gaara
Gaara Ichimaru
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lucidPerspective
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Re: LED Game Cartridge

Post by lucidPerspective »

Glad you made sense of that :mrgreen: ..let us know how it goes
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Haunted360
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Re: LED Game Cartridge

Post by Haunted360 »

Right - so it lowers the current (Amps) too?

And I wouldn't use wire that thick. It will increase the resistance I believe.

Though, you can STILL use it - just a reccomendation is all :mrgreen:
Gaara Ichimaru
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Re: LED Game Cartridge

Post by Gaara Ichimaru »

Haunted360 wrote:Right - so it lowers the current (Amps) too?

And I wouldn't use wire that thick. It will increase the resistance I believe.

Though, you can STILL use it - just a reccomendation is all :mrgreen:
Only lowers that amperage,

also having a thick wire decreases the resistance, not that it matters, the current cant be higher than the original source anyway. :)

-Gaara
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Haunted360
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Re: LED Game Cartridge

Post by Haunted360 »

Wait.

This has got me all confused...


What do you mean by Amperage? Amps of course. Right?
What do you mean by Current? Ohms, Volts???


And wouldn't a thick wire increase the resistance?
Because there is much more wire and density for the 'electricity' to travel through, thus slowing it down? (Well, increasing the Ohms)


But, as for the resistors - it lowers the AMPS and VOLTS? Correct??
Last edited by Haunted360 on Wed Aug 04, 2010 6:35 pm, edited 1 time in total.
lucidPerspective
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Re: LED Game Cartridge

Post by lucidPerspective »

Haunted360 wrote:But, as for the resistors - it lowers the AMPS and VOLTS? Correct??
Generally just amps, like in the tests I posted before, it only dropped the voltage when I went supersayan and put a 500k resistor in there :D
Haunted360 wrote:What do you mean by Current? Ohms, Volts???
current is measured in amps
Haunted360 wrote:And wouldn't a thick wire increase the resistance?
Because there is much more wire and density for the 'electricity' to travel through, thus slowing it down? (Well, increasing the Ohms)
there is more wire for the electricity to flow freely. thus why a thicker wire can deliver more current (amps) and why we use thicker wire for the main power wires in our portables
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Haunted360
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Re: LED Game Cartridge

Post by Haunted360 »

Thanks.

I thought that Resistors only dropped the Voltage, not the Amps.

And I thought that Thin Wire would decrease the resistance...

But I was incorrect there!


And of course, you would put thicker wire where the Main Power is :mrgreen:


Thank You.
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