Hello,
This is the door chime that appeared in issue 6/2003 of Elektor magazine.
I have made two copies with the same problems:
- they don't switch to the next piece of music each time,
- they block while remaining powered, obligation to cut the power supply to reset,
- they don't start each time.
I have tried with different power supplies without success, I have also reprogrammed various PICs without any result.
I'm counting on your help to get rid of this.
I hope you will help me to solve this problem,

Alain