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Morse_Code_Sound_Challenge.ino
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Morse_Code_Sound_Challenge.ino
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/*
Morse Code Sound
Uses pin blinking to display morse code.
Dots and pauses between a Dot or a Dash are 240ms.
Dashes and pause beween letters are 3*240ms.
Pause between words is 7*240ms.
Pin 9 is used as output.
The following code outputs "SOS" in morse code with sound.
*/
int pin = 9;
int uTime = 240;
unsigned int frequency = 250; //frequency of output sound
void setup() {
// initialize digital pin pin as an output.
pinMode(pin, OUTPUT);
}
void loop() {
tone(pin, frequency); //start of "S"
delay(uTime);
noTone(pin);
delay(uTime);
tone(pin, frequency);
delay(uTime);
noTone(pin);
delay(uTime);
tone(pin, frequency);
delay(uTime); //end of "S"
noTone(pin); //delay between letters
delay(3 * uTime);
tone(pin, frequency); //start of "O"
delay(3 * uTime);
noTone(pin);
delay(uTime);
tone(pin, frequency);
delay(3 * uTime);
noTone(pin);
delay(uTime);
tone(pin, frequency);
delay(3 * uTime); //end of "O"
noTone(pin); //delay between letters
delay(3 * uTime);
tone(pin, frequency); //start of "S"
delay(uTime);
noTone(pin);
delay(uTime);
tone(pin, frequency);
delay(uTime);
noTone(pin);
delay(uTime);
tone(pin, frequency);
delay(uTime); //end of "S"
noTone(pin); //delay between words
delay(7 * uTime);
}