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
