Simple Speaker Setup

Introduction

Speakers can be used for many things, for example playing tunes, communicate to a user of a product or even give a warning that something is wrong.

In this guide, you will learn how to connect a speaker to your microcontroller and make it play a noise using a speaker or active buzzer.

Before continuing this guide it is recommended that you have read- or have basic knowledge about .

Supplies

board
Wires
100 Ohm
Piezo (any speaker or buzzer will do)

Circuit

This circuit is quite simple and quick to do. First connect a wire from 2 to the left leg of the . Then connect a 100 Ohm from the right leg to another wire that goes into ground.

Code

// How to connect a (Piezo) speaker

// This code will make your speaker make a pitched sound.


// a pin for the speaker is initialized
const int PiezoPin = 2;

void setup() {
// no setup is required for this tutorial :)
}

void loop() {
  /* For this tutorial the tone() function is used:
   * tone() require 2 inputs with an optional third input
   * 1) pin number
   * 2) frequency - hertz (cycles per second) which determines
   *    the pitch of the noise made
   * 3) duration (optional) - duration of tone in milliseconds before the
   * code skips to the next line. If no duration is used the tone will
   * play continuously.
  */

  // make a pitch sound at 2000-, 3000- and 4000 hertz for half a second each
  tone(PiezoPin, 2000, 500);
  delay(500);
  tone(PiezoPin, 3000, 500);
  delay(500);
  tone(PiezoPin, 4000, 500);
  delay(500);
}

import gpiozero as g
import time
# How to connect a (Piezo) speaker
# This code will make your speaker make a pitched sound.
# Define Buzzer on pin 11 (#17)
buzzer = g.Buzzer(17)

# Initialize loop
while True:
    # Buzzer makes noise every second
    buzzer.on()
    time.sleep(1)
    buzzer.off()
    time.sleep(10)

Further Work

Now that you have completed this tutorial on how to connect a speaker, try creating your own tune.