Hacking Hardware Unintrusive bluetooth mod for Ds Lite.

[LexDG]

The vision: convert the gba slot cover into a bluetooth audio transmitter. POSSIBLY powered by the 3.3v pin. Since it sit’s right next to the headphone jack it could be used with a short low profile right angle cable to plug in.

The question: how does a complete noob go about designing something like this?

 

[mrparrot2]

If you mean use a custom made gba cart as a bluetooth transmitter, you will probably Just use the gba slot to get Power from. Since no audio can be transmitted to it (you would need to patch every ROM with custom code for your transmitter, which would be insane), a much feasible way would be to use a headphone Jack passthrough from the DS headphone Jack to the GBA cart, and the cart would send the bluetooth sinal to another headphone for example.

Or perhaps it would be simples to Just use a headphone Jack to bluetooth converter?

https://www.amazon.com/s?k=bluetoot...ansmitter+,aps,349&ref=nb_sb_ss_ts-doa-p_2_22

If you want to continue with this, then grab the smallest receiver you can that operate on 3v (or 3.3v, probably it will work), dissassemble it, then try to fit into a gba cart. Then some minor eletronics work would be necessary to wire it into the 3v pin of the gba cart, as well as gnd.

That way you would already have a working protype.

 

[JuanMena]

I think it's very simple in theory.
Basically any Bluetooth module could work, you'd simply be replacing the Bluetooth modules's battery for the DS Lite's power.
So, in reality, all you'll have to do is wire the Audio OUT from the headphone jack to the Bluetooth's Audio OUT (in the Bluetooth's pcb) and then solder the Ground and V lines.

But finding a board that fits exactly in the GBA cartridge is a whole other matter. If capacitors are an issue, replace for surface mounted caps, and I think that'd be your biggest trouble.

Nice project though!

 

[LexDG]

a much feasible way would be to use a headphone Jack passthrough from the DS headphone Jack to the GBA cart, and the cart would send the bluetooth sinal to another headphone for example.

That’s pretty much exactly the idea. No massive work on the hardware or software side of the console itself. Simply an adapter that tucks neatly away with only a small cable going to the headphone jack.