This project turns your arduino into a sos morse code sender. It sends the code using a LED connected to the digital pin 10. 

To build this project you will need:

  • 1 Arduino board
  • 1 LED
  • 1 220ohm resistor

Build the circuit like the picture above.

Then, upload the following code:

// LED connected to digital pin 10 
int ledPin = 10;

// run once, when the sketch starts
void setup() 
{
// sets the digital pin as output
pinMode(ledPin, OUTPUT); 
}

// run over and over again 
void loop() 
{
// 3 dits
for (int x=0; x<3; x++) {
digitalWrite(ledPin, HIGH); // sets the LED on
delay(150); // waits for 150ms
digitalWrite(ledPin, LOW); // sets the LED off
delay(100); // waits for 100ms
}

// 100ms delay to cause slight gap between letters
delay(100); 
// 3 dahs
for (int x=0; x<3; x++) {
digitalWrite(ledPin, HIGH); // sets the LED on
delay(400); // waits for 400ms
digitalWrite(ledPin, LOW); // sets the LED off
delay(100); // waits for 100ms
}

// 100ms delay to cause slight gap between letters 
delay(100); 

// 3 dits again
for (int x=0; x<3; x++) {
digitalWrite(ledPin, HIGH); // sets the LED on
delay(150); // waits for 150ms
digitalWrite(ledPin, LOW); // sets the LED off
delay(100); // waits for 100ms
}

// wait 5 seconds before repeating the SOS signal 
delay(5000); 
}

When finished, the arduino will start blinking the LED with the SOS morse signal.

That's it!

References:

http://arduino.cc/en/

http://www.labdegaragem.org/loja/index.php/47-livros/arduino-basico...

Views: 1572

Tags: arduino, project

Comment by Ed Goulart on February 2, 2013 at 2:23pm

Indeed a nice code!

A good challenge would be not to repeat the second "di-di-dit", redirecting the program to the first routine.

Comment by Robin Hemmer on August 9, 2013 at 9:10am

this worked for me - 

// Another SOS sketch by Robin Hemmer

// LED connected to digital pin 10
int ledPin = 13;

// run once, when the sketch starts
void setup()
{
// sets the digital pin as output
pinMode(ledPin, OUTPUT);
}

// run over and over again
void loop()
{
// 3 dits
for (int x=0; x<3; x++)
{
dit();
}

// 300ms delay to cause slight gap between letters
delay(300);
// 3 dahs
for (int x=0; x<3; x++)
{
dah();
}

// 300ms delay to cause slight gap between letters
delay(300);

// 3 dits again
for (int x=0; x<3; x++)
{
dit();
}
// wait 3 seconds before repeating the SOS signal
delay(3000);
}

void dit()
{

digitalWrite(ledPin, HIGH); // sets the LED on
delay(150); // waits for 150ms
digitalWrite(ledPin, LOW); // sets the LED off
delay(100); // waits for 100ms

}

void dah()
{
digitalWrite(ledPin, HIGH); // sets the LED on
delay(400); // waits for 400ms
digitalWrite(ledPin, LOW); // sets the LED off
delay(100); // waits for 100ms
}

Comment

You need to be a member of GarageLab (arduino, electronics, robotics, hacking) to add comments!

Join GarageLab (arduino, electronics, robotics, hacking)

Latest Activity

Walter Hynson commented on Marcelo Rodrigues's group Arduino
"have you checked the data sheet for the display ,check to find out what pin does what and then make…"
22 hours ago
Walter Hynson joined Marcelo Rodrigues's group
Thumbnail

Arduino

Group for the Arduino communitySee More
22 hours ago
GarageLab posted blog posts
yesterday
Profile IconTodd Jarvis, Raul Palav and William Lathan joined GarageLab (arduino, electronics, robotics, hacking)
yesterday
Profile IconGordon Rain and Ronald E Anderson joined GarageLab (arduino, electronics, robotics, hacking)
Wednesday
GarageLab posted a blog post
Wednesday
Harry Matthie posted a discussion

Garagino JP1

Does anyone know what the JP1 is for on the Garagino?  I found out that the x1 and x2 pins are for…See More
Tuesday
GarageLab posted a blog post
Monday
Profile IconManikandan and k joined GarageLab (arduino, electronics, robotics, hacking)
Monday
GarageLab posted a blog post
Apr 17
Donnie Rose replied to Donnie Rose's discussion Building an auto-boat to keep ducks out of the pool!
"Correction, sorry.  RC receiver is not used with this set up.   Battery & motor hooks…"
Apr 16
Donnie Rose posted a discussion
Apr 16
Profile IconDonnie Rose and Ransona Company joined GarageLab (arduino, electronics, robotics, hacking)
Apr 16
GarageLab posted a blog post
Apr 16
Jim Kelley commented on GarageLab's blog post HemaVision Smart Thermal Imager Actually Tells You What that Cool (or Hot) Image Means
"This could be a valuable tool for diagnosing temperature and humidity problems in locations where…"
Apr 15
Anthony Parker updated their profile
Apr 14
David Braithwaite added a discussion to the group Raspberry Pi
Apr 14
David Braithwaite joined David's group
Thumbnail

Raspberry Pi

This is a place to discuss all things Raspberry Pi.See More
Apr 14
GarageLab posted a blog post

Artificial bee brain used for vision system of a drone

The Green Brain Project is located in Sheffield, England, and it has one key focus: to simulate a…See More
Apr 14
Profile Iconabraham chemweno, Hetcher, Dan Calef and 1 more joined GarageLab (arduino, electronics, robotics, hacking)
Apr 14

© 2015   Created by Marcelo Rodrigues.

Badges  |  Report an Issue  |  Terms of Service