Hi,

I don't know the real reason, but I have that crush on the old technology and its stuff , one of the most thing I ever loved is morse code and how they communicate, so in my first days with arduino -three years ago I think !- one of my first projects was morse code with it, then I decided to try another method to use this codes, so I came with the LED idea in that night and did it.

Now in my very first instructable I'll write about this old MEMORY :)

Step 1: What Will Need!

Nothing just any Arduino board and LED

and some knowledge about the morse code https://en.wikipedia.org/wiki/Morse_code

you need to install arduino IDE and the drivers to communicate with the board

you can download it from this link >>>>> https://www.arduino.cc/en/Main/Software

that's it lets start fun :)

oh!...ONE LAST THING!!!

the morse code reference>>>> https://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/International_Morse_Code.svg/2000px-International_Morse_Code.svg.png

Step 2: Programming....

before I start you need to that the programming is a fun thing just you need to get the right mode :)

now go and take a TRIPLE ESPRESSO

cause the code is easy but tricky (very!) -if you prefer to test the code or too lazy to write it my code files is attached just compile and upload it!-

all done lets start :

- first we need to but the LED in it's right place so but the taller part in the 13 pin and the shorter in GND pin like th pics.

- now all is ready connect the arduino to the computer and lunch the arduino IDE -don't forget to select the port-

- it's programming time :D,,,,,

to start programming u need first to download the reference to know the codes, this is some explanation and how we will do it with arduino :

-now u need to understand some points

-the dot and the dash, the dot is the short sound in morse code and the dash is the long one I made the time for the dot is 300 millisecond and 900 for the dash cause the dash is triple dot.

-u will find the time and the length of the morse code in the reference pic, maybe u will find the time I but different in some situation if u did please post and I'll explain.

-the code...............

//morse_code by LED
/*
  This code was written by Ebrahim Bawazir in 2013 and updated in 2015
          U R FREE TO USE IT AND MODIFY IT AS U WANT
                      *****************
*/
int led =13;//the led pin
char input;// to save the input
void setup () {
  pinMode (led,OUTPUT);//tell that the 13 pin is an output
  Serial.begin(9600);//for the connect with the boared
}
void loop () {
  if (Serial.available()) {
    input = Serial.read();//read the input
    if (input == 'a' || input == 'A') {lA();}//if the input is a or A go to function lA
    if (input == 'b' || input == 'B') {lB();}//same but with b letter
    if (input == 'c' || input == 'C') {lC();}
    if (input == 'd' || input == 'D') {lD();}
    if (input == 'e' || input == 'E') {lE();}
    if (input == 'f' || input == 'F') {lF();}
    if (input == 'g' || input == 'G') {lG();}
    if (input == 'h' || input == 'H') {lH();}
    if (input == 'i' || input == 'I') {lI();}
    if (input == 'j' || input == 'J') {lJ();}
    if (input == 'k' || input == 'K') {lK();}
    if (input == 'l' || input == 'L') {lL();}
    if (input == 'm' || input == 'M') {lM();}
    if (input == 'n' || input == 'N') {lN();}
    if (input == 'o' || input == 'O') {lO();}
    if (input == 'p' || input == 'P') {lP();}
    if (input == 'q' || input == 'Q') {lQ();}
    if (input == 'r' || input == 'R') {lR();}
    if (input == 's' || input == 'S') {lS();}
    if (input == 't' || input == 'T') {lT();}
    if (input == 'u' || input == 'U') {lU();}
    if (input == 'v' || input == 'V') {lV();}
    if (input == 'w' || input == 'W') {lW();}
    if (input == 'x' || input == 'X') {lX();}
    if (input == 'y' || input == 'Y') {lY();}
    if (input == 'z' || input == 'Z') {lZ();}
    if (input == '1') {n1();}// the numbers
    if (input == '2') {n2();}
    if (input == '3') {n3();}
    if (input == '4') {n4();}
    if (input == '5') {n5();}
    if (input == '6') {n6();}
    if (input == '7') {n7();}
    if (input == '8') {n8();}
    if (input == '9') {n9();}
    if (input == '0') {n0();}
    if (input == ' ') {space();}//the space
    Serial.println (input);//print the latter saved in the input var
    
  }
}
//fonctions for the letters and the numbers
void lA () {dot();dash();shortspace();}//letter A in morse code!
void lB () {dash();dot();dot();dot();shortspace();}//same for B
void lC () {dash();dot();dash();dot();shortspace();}
void lD () {dash();dot();dot();shortspace();}
void lE () {dot();shortspace();}
void lF () {dot();dot();dash();dot();shortspace();}
void lG () {dash();dash();dot();shortspace();}
void lH () {dot();dot();dot();dot();shortspace();}
void lI () {dot();dot();shortspace();}
void lJ () {dot();dash();dash();dash();shortspace();}
void lK () {dash();dot();dash();shortspace();}
void lL () {dot();dash();dot();dot();shortspace();}
void lM () {dash();dash();shortspace();}
void lN () {dash();dot();shortspace();}
void lO () {dash();dash();dash();shortspace();}
void lP () {dot();dash();dash();dot();shortspace();}
void lQ () {dash();dash();dot();dash();shortspace();}
void lR () {dot();dash();dot();shortspace();}
void lS () {dot();dot();dot();shortspace();}
void lT () {dash();shortspace();}
void lU () {dot();dot();dash();shortspace();}
void lV () {dot();dot();dot();dash();shortspace();}
void lW () {dot();dash();dash();shortspace();}
void lX () {dash();dot();dot();dash();shortspace();}
void lY () {dash();dot();dash();dash();shortspace();}
void lZ () {dash();dash();dot();dot();shortspace();}
void n1 () {dot();dash();dash();dash();dash();shortspace();}//number 1 in morse code
void n2 () {dot();dot();dash();dash();dash();shortspace();}
void n3 () {dot();dot();dot();dash();dash();shortspace();}
void n4 () {dot();dot();dot();dot();dash();shortspace();}
void n5 () {dot();dot();dot();dot();dot();shortspace();}
void n6 () {dash();dot();dot();dot();dot();shortspace();}
void n7 () {dash();dash();dot();dot();dot();shortspace();}
void n8 () {dash();dash();dash();dot();dot();shortspace();}
void n9 () {dash();dash();dash();dash();dot();shortspace();}
void n0 () {dash();dash();dash();dash();dash();shortspace();}
void space () {delay (1200);}//space between words
void dot () {digitalWrite(led,HIGH); delay (300); digitalWrite(led,LOW); delay (300);}//the dot this code make the led on for 300 than off for 300
void dash () {digitalWrite(led,HIGH); delay (900); digitalWrite(led,LOW); delay (300);}//the dash this code make the led on for 900 than off for 300
void shortspace () {delay(600);}//space between letters
/*done*/

any Q ask and I'll respond.