After finishing the simple hardware version I started coding  on a Gameboy emulator to try to display time and play "a-russian-tune-that-looks-like-a-famous-game-music-that-gets-a-lot-of-copyright-complaints"

The controls are :

• button A             : set time
• button B             : set alarm
• up/down  : select hours or minutes

• left/right  : increase/decrease time (minutes or seconds, choose with up and down)

I wrote the code in C and use GBDK to compile it. I will put the source code on Github soon, for now you can find the .gb file in the files section.

I contacted Eric from The Other Days and he pointed me to Lsdpack which would allow me to play proper LSDJ chiptunes on my "gameboy alarm clock" so I will try it soon.