Help with Gameboy advance analog / nub mod

[Luigus]

hey, if been meaning to do this mod. I have a analog / nub with the wires connected and the ground wire in place but i dont know where i should solder these wires to the d-pad from the gba. i just want to make the analog work in place of the d-pad.. any thoughts?

i'll try to attach a picture of the d-pad board

thanks, Luigus

[hyper999]

is the dpad setup in a matrix or common line format?

[Luigus]

no idea, how do i check?

[hyper999]

use your multimeter to check if one contact of the button is connected to one contact of each of other buttons

[Phantom]

you could make a pcb like this, and swap it our with the one inside the stock psp analog.

[Luigus]

i'll do what hyper999 said, what difference would it make?

phantom i dont need a analog ive got that, i just want to wire it up to the gba's d-pad but dont know where..

[hyper999]

you could make a pcb like this, and swap it our with the one inside the stock psp analog.

if you make a pcb like this you don't even need to bother doing what i said, however you are going to have to modify the nub no matter what you do because it simply isn't setup to do what you want

[Luigus]

so in short ill have to make a new pcb board.. could you attach the pic plz... my administrator blocked the pictures :/.... cant i do it the same way as in a psp? or is this way more complicated?

[Luigus]

use your multimeter to check if one contact of the button is connected to one contact of each of other buttons

id di what you said.. if i touch one point of the multimeter on the eg.down button and one on the eg. up button, theres is contact

[hyper999]

ok as long as they have a common line you can do this just like a psp dual nub mod, heres some tutorials
https://www.acidmods.com/forum/index.php/topic,35124.0.html
https://www.acidmods.com/forum/index.php/topic,27383.0.html
https://www.acidmods.com/forum/index.php/topic,27306.0.html

you just have to do exactly the same as these tuts but obviously the points for the buttons on the gba will be different to on the psp

[Luigus]

ok thanks for help...

could you tell me if this basic diagram of what i want to do would work...

i'll attach it..

[hyper999]

yes that will work but the red wire on your diagram only needs to connect to one of the common pads (one of the ones that are all connected), not all 4.

P.S i cant actually tell you 100% that that diagram will work because i dont know which side of the buttons is the common side.

[Luigus]

ok kwl, i thought about he one ground wire after i posted XD... and i figured out to which pins i should solder the directions too.. thanks for all you help

[hyper999]

cool that diagram looks great be sure to post up a work log this is a pretty cool mod

[Luigus]

cool that diagram looks great be sure to post up a work log this is a pretty cool mod

OK ill do that, i just need time to take pics and stuff... and some supplies haha.

anyway thanx for all your help!

Luigus