2B6 Active Buzzer Alarm Module

Description

The YL-44 is a small buzzer module which operates around the audible 2 kHz frequency range. It is an active buzzer, which means that it produces sound by itself, without needing an external frequency generator. Taking the I/O pin LOW will turn the buzzer ON and taking this pin HIGH will turn the buzzer OFF (as will leaving this pin OPEN). This device could be controlled by PWM.

Features

• It and your Arduino/Chin Duino will be able to play melodies. This is a small buzzer for the Sensor Shield.

• It creates different sounds based on the different frequencies of I/O toggling. 

• All you need to do is to plug in the buzzer module to sensor shield and tell the function which pin you'd like to use the frequency you want to hear and the duration to play that frequency. 

• Bring oscillation source 

• Audion 9012 drive 

• Work Voltage:3.3-5V 

• Set bolt hole, easy to assemble 

• PCB Dimension:3.3cm*1.3cm 

Pin Definition:

Pin	definition
Vcc	3.3~5V
GND	the Ground
I/O	I/O interface of SCM

Package Include: 

• 1pcs Active Buzzer Alarm Module 

• 3pcs 20cm 1p-1p DuPont cable 

 

 Code

 This code will produce a two tone output

/*Example Code for YL-44 Active buzzer
Connect Vcc to 5 volts
Connect Gnd to Gnd
Connect I/O to pin 3 */


int buzzer = 3 ;// connect the I/O pin on the buzzer to this


//Explain

void setup ()
{
pinMode (buzzer, OUTPUT) ;
}
void loop ()
{
unsigned char i, j ;// define variables
while (1)
{
for (i = 0; i <80; i++)
{
digitalWrite (buzzer, LOW) ; // Turn buzzer ON
delay (1) ;// Delay 1ms
digitalWrite (buzzer, HIGH) ;// turn buzzer OFF
delay (1) ;// delay ms
}
for (i = 0; i <100; i++) // new frequency
{
digitalWrite (buzzer, LOW) ;// turn buzzer ON
delay (2) ;// delay 2ms
digitalWrite (buzzer, HIGH) ;// turn buzzer OFF
delay (2) ;// delay 2ms }
}
}