Simple Electronic Piano made with NE555 Timer IC produces 8 tones (do, re, mi, fa, sol, la, si, do) and the frequency of the notes can be changed with 10k trimpot. You can use big or normal type push-release button. A small speaker can be used instead of buzzer in the sound output.
Electronic piano Technical parameters
- It can produce 8 tones.
- Sound frequency can be adjusted.
- Working voltage 9-12V DC.
- PCB dimensions: 114x42mm.
Electronic Piano Circuit Diagram
source: arlisklep.pl/files/ARLI/AR194.pdf
Simple Electronic Piano ZIP File Password: 320volt.com
