A very easy tutorial that uses only two components. The Arduino plays a short melody on a loudspeaker. The program to load to the Arduino is one of the programs that is built into the Arduino IDE.
Prerequisites
Complete tutorial 3 – Starting with Arduino and its prerequisites before attempting this tutorial.
Components
Besides an Arduino Uno and wire link, you will need:
| Qty | Part | Designator | Notes | Type |
|---|---|---|---|---|
| 1 | 100 ohm (brown – black – brown) | R1 | 1/4W, 5% or better | Resistors |
| 1 | 8 ohm loudspeaker | SP1 | Transducer |
The required components are shown in this photo:
Circuit Diagram
The circuit diagram shows that the positive terminal of the speaker is connected through a 100 ohm resistor to pin 8 of the Arduino. The negative terminal of the speaker is connected to one of the Arduino GND pins.
Building the Circuit
Start by connecting the negative speaker terminal (black wire) to a GND pin on the Arduino. Note that it is not necessary to use a breadboard when using a speaker that is taken from an old PC as it has a connector that a single core wire can be plugged into.
Loading the Program
The program to load is one of the built-in Arduino programs. Open it from within the Arduino IDE under:
File → Examples → 2.Digital → toneMelody.
Read more: Arduino Melody