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: 1344

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

Profile IconDinko, Bukasa Tshilombo, simataempat and 1 more joined GarageLab (arduino, electronics, robotics, hacking)
yesterday
ANGEL RUIZ replied to ANGEL RUIZ's discussion Can this Xyron be used as a CNC router
"Here"
Thursday
ANGEL RUIZ posted a discussion

Can this Xyron be used as a CNC router

I don't have the money to afford a CNC router so I was wondering if I can convert this into…See More
Thursday
GarageLab posted a blog post

HAVOC: NASA’s proposed cloud city over Venus

The surface of Venus is a notorious hell-hole. If an atmospheric pressure roughly 90 times greater…See More
Thursday
roberto premoli's photo was featured

premobox25-per-web-001

premoboard+cubieboard+hdd2.5''features:-3LAN-5USB-2WIFI-500GB HDD…
Tuesday
Veritus's photo was featured

Battery Pack

Created a closed system of power in a wearable back pack. Back pack had 5 power outlets each at 220…
Tuesday
NELU NASTASOIU's photo was featured
Tuesday
wesley wortman's photo was featured
Tuesday
GarageLab posted blog posts
Tuesday
sunny lai left a comment for sunny lai
"thanks for hearing from you, it is my pleasure"
Tuesday
Enahoro Olori updated their profile
Monday
Profile IconRobert Sitton, Mr Abraham Akim and Magnus Nordin joined GarageLab (arduino, electronics, robotics, hacking)
Monday
GarageLab posted blog posts
Dec 12
Profile Icongiacomo, dan rules and Jay Thornton joined GarageLab (arduino, electronics, robotics, hacking)
Dec 11
GarageLab posted a blog post
Dec 10
GarageLab replied to Lou Liberatore's discussion LiquidCrystal_I2C library in the group Arduino
" Hi Lou Lberatone, I think you Hi Lou Lberatone, I think you probably are using the libraries…"
Dec 10
GarageLab joined Marcelo Rodrigues's group
Thumbnail

Arduino

Group for the Arduino communitySee More
Dec 10
GarageLab posted blog posts
Dec 9
Profile Iconbenjamin black and sunny lai joined GarageLab (arduino, electronics, robotics, hacking)
Dec 9
Profile IconJjdelala and Sathish GP joined GarageLab (arduino, electronics, robotics, hacking)
Dec 8

© 2014   Created by Marcelo Rodrigues.

Badges  |  Report an Issue  |  Terms of Service