Tone music surprises

Hey all! It's almost Christmas and time for the traditional carols. I've found a 8Ω loudspeaker from an old PC and I went through a classic Arduino Sketch for beginners. I've optimized it a little bit. Moreover, I've translated into French/Italian the notes and introduced standardized length for durations and the possibility to add pauses.

Lost treasures 2: a strange LCD 1x16 (or 2x8?)

This was an electric typewriting machine.

While disassembling an old electric typewriter which was sleeping since years in a corner, I’ve found this LCD.

The strange LCD screen found.

Lost treasures 1 (Cooling fan HY45J-05A-831)

Lost treasures

Disassembling old electronics pieces can be lot of fun. Sometimes one can find small treasures. I will start a series of posts with my findings. This time is the turn of a PC cooling fan. On the case I've found the model code: HY45J-05A-831. The manufacturer is SEPA. The are also minimal specs: 

DC 5V

0.16A

Here is a picture of the fan.