8 Note Tune Player


Posted on Dec 19, 2012

This neat little circuit can play 8 note tunes at any speed you want. You select the notes with 8 trim pots. The speed in selected through a ninth pot. The circuit draws very little power and can be powered by a 9 volt battery, with the addition of a 7805 regulator to power the TTL logic used.


8 Note Tune Player
Click here to download the full size of the above Circuit.

# R1 controls the speed at which the notes are played. R3-R10 control the pitch of those notes. # The circuit will operate fine on a 9V battery, with the addition of a 7805 regulator to power the TTL logic used. # The missing pin on U2 is pin 14.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

12 V battery charger
Dc Output Chopper Circuit
Light control system of traffic of double mode of infrared remote-control on the basis of 89C52 one-chip computer
lm2876 40w audio power amplifier circuit design
NightRydazz
Poor Mans DDS Board
Tube amplifier input voltage input



Top