It's separated in modules. You press the upper button (A) to switch between them, and when you reach the desired number you press the lower button (B).
Nothing (0) -> Torch (1) -> Laser (2) -> IR Mode (3) -> TV-B-Gone (4) -> Only sound (5)
Our laser is broken, and the fifth option is still being developed, we're going to get a broken earphones and try to amplify the sound. We want a similar sound to the Sonic Screwdriver.
I'm trying to keep the code simple, but it's getting more complex each time I modify it. I have already started from 0 three times. First time was a total mess.
Everything is going to be soldered into a PCB an introduced into the bottle. Even it looks like it doesn't, it fits! We're trying to do the Arduino extractable, in order to modify the code, but that is giving us a lot of problems. We have a design but we couldn't try it yet.