The Buzzer Piezoelectric Piezo Ceramic Wafer Dc3-24v is a compact device capable of generating basic beeps and tones. Utilizing a piezo crystal, it changes shape when a voltage is applied, producing pressure waves that the human ear perceives as sound. This buzzer is designed for simple applications requiring audible alerts or alarms.

Specifications:

• Operating Voltage: DC3-24V
• Type: Continuous sounder electronic buzzer
• Dimensions: Straight: 23MM, Height: 11MM, Pitch: 30MM

Features:

• Small high-decibel alarm

How to Connect the Buzzer to Arduino:

1. Connect the piezo wires to the breadboard.
2. Insert a 100ohm resistor to limit the current of the piezo to prevent damage to the Arduino Out Pin.
3. Connect the red wire from the piezo to the 8th pin on the Arduino.
4. Connect the black wire from the piezo to one end of the resistor, then connect the other end of the resistor to the GND (Ground) pin on the Arduino.

Arduino Code:

//Specify digital pin on the Arduino that the positive lead of piezo buzzer is attached.
int piezoPin = 8;

void setup() {
}

void loop() {
  /*Tone needs 2 arguments, but can take three
   1) Pin#
   2) Frequency - this is in hertz (cycles per second) which determines the pitch of the noise made
  */
  tone(piezoPin, 1000);
  //tone(piezoPin, 1000);
  //delay(1000);
}

This code generates a tone with a frequency of 1000Hz on the specified pin of the Arduino. You can adjust the frequency by changing the value inside the tone() function.

Package Includes:

• 1x Buzzer Piezoelectric Piezo Ceramic Wafer Dc3-24v