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1. Introduction
Read moreThis is a simple project that uses an Arduino Uno with a piezo buzzer to convert the text message into an audio Morse code.
Morse code
Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called dots and dashes or dits and dash. Morse code is named after Samuel Morse, an inventor of the telegraph.
International Morse Code, also known as Continental Morse Code, encodes the 26 English letters A through Z, some non-English letters, the Arabic numerals, and a small set of punctuation and procedural signals (prosigns). There is no distinction between upper and lower case letters. Each Morse code symbol is formed by a sequence of dots and dashes. The dot duration is the basic unit of time measurement in Morse code transmission. The duration of a dash is three times the duration of a dot. Each dot or dash within a character is followed by a period of signal absence, called a space, equal to the dot duration. The letters of a word are separated by a space of duration equal to three dots, and the words are separated by a space equal to seven dots.
2. Demonstration_WW0WGxR4nM.png)
int t=75,pin=3;
void morse(char ch)
{
if(ch=='a')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='b')
{
digitalWrite(pin,HIGH); //Dash
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH); //Dot
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH); //Dot
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH); //Dot
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='c')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='d')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='e')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='f')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='g')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='h')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='i')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='j')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='k')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='l')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='m')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='n')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='o')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='p')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='q')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='r')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='s')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='t')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='u')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='v')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='w')
{
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='x')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='y')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch=='z')
{
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(3*t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(t);
/*---------------------------------*/
digitalWrite(pin,HIGH);
delay(t);
digitalWrite(pin,LOW);
delay(3*t);
}
else if(ch==' ')
{
delay(7*t);
}
}
void setup()
{
Serial.begin(9600);
pinMode(pin,OUTPUT);
}
void loop()
{
String input="";
if(Serial.available()>0)
{
input=Serial.readString();
Serial.println(input);
int i=0;
char ip='a';
while(ip != '\0')
{
ip=input.charAt(i); // This code gets the charcter at a particular location in the string.
Serial.println(ip);
morse(ip);
i++;
}
}
}
Adhyoksh Jyoti
11 projects • 9 followers
Electronics and Communication Engineering B.Tech graduate from NIT Srinagar, J&K.
_WW0WGxR4nM.png){kind=link}
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