Melody or Sound Generator Circuit

Published  July 22, 2015   0
S Saddam
Author
Melody or Sound Generator Circuit

A lot of toys have some kind of melody tones in them. But how do these tones generate? Here we have designed a simple tone generator circuit using only a single melody generator IC.  

 

Circuit Components

  • BT66T-19L
  • 1K Resistor
  • Breadboard
  • 3 Volt lithium Battery
  • Buzzer
  • Push Button

 

Circuit Diagram and Explanation

Melody Generator Circuit Diagram

​Working and connections for this project is very easy. BT66T Melody generator IC’s BD or output pin is connected to buzzer through a 1K resistor and Vss to ground. A push button is connected with Vdd pin of melody IC with battery. When we press this attached button, melody IC plays a “For Elise” melody using a buzzer. If we keep pressing the button, melody repeat again and again.

 

In this circuit we have used only single chip namely BT66T-19L for generation of Elise melody or sound. A push button is used to start melody and a buzzer for sound and a single 3 Volt Lithium battery for powering the circuit.

 

Main component of this circuit is melody generator chip which generate a melody tone when we press push button.  There are some features mentioned for melody generator family’s IC with some specifications.

 

BT66T has some melody ICs namely:

BT66T-19L for “For Elise” melody Generation

BT66T-02L for “Jingle bell” melody Generation

BT66T-08L for “Happy Birthday” melody Generation

BT66T-19L for “Love story” melody Generation

BT66T-19L for “It’s a Small World” melody Generation

 

Features:

Plays a melody consisting of 64 note

Inbuilt RC oscillator

64-note ROM memory

TO-92 Package

Start from the head of melody

Power on Reset

Direct piezo drive

Dynamic speaker cab be driven using transistor externally.

Sound range 2 octaves

Operating Voltage 1.3 Volt to 3.3 Volts

Video

Have any question related to this Article?

Add New Comment

Login to Comment Sign in with Google Log in with Facebook Sign in with GitHub