Arduino and speaker example

Another simple example is to hook up a speaker to your Arduino.

Schematic

arduino speaker schematic

Layout

arduino speaker

Code

A simple example.

int pin = 8;
int note = 988;

void setup()
{
}

void loop()
{
//3 dots for the S
for (int i=0; i<3; i++)
{
tone(pin, note, 100);
delay(200);
noTone(pin);
}
delay(200);
//3 dashes for the O
for (int i=0; i<3; i++)
{
tone(pin, note, 300);
delay(400);
noTone(pin);
}
delay(200);
//3 dots for the S again
for (int i=0; i<3; i++)
{
tone(pin, note, 100);
delay(200);
noTone(pin);
}
delay(200);
//wait 3 seconds
delay(3000);
}

Parts List

Amount	Part Type
1	Arduino Uno (Rev3)
1	100 Ω Resistor
1	Loudspeaker