I wanted to make an interal teensyboy mod but would I need to make a thing similar to little sounds design or could I just put the teensyboy pre programmed and it put it in the gameboy?
The most difficult part about putting an aruidnoboy or teensy whatchamacallit inside of your boy is not the soldering and it is not the programming. The most difficult part is the drilling. Are you prepared to drill two 1 inch holes in the side of your Boy? If you don't have the perfect drill bit and a steady hand, you're in for some disappointment.
If you're up for that, we can help you with the rest.
i dont have the teensy yet and im not sure how to install it if i just put the teensy in or not