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  • 1 LED(Red, Green, Yellow)
  • 3 Arduino UNO (download)
  • computer(with Arduno app!)
  • program
  • programmer

Step 1: Plug in Your LED(Green)

plug the LED(Green)into pins 13 (+) GND (-)

make sure the + and - are in the right way.

Step 2: Plug in LED(Red)

plug the LED(Green)into pins 13 (+) GND (-)

make sure the + and - are in the right way.

Step 3: Plug in LED(Yellow)

plug the LED(Green)into pins 13 (+) GND (-)

make sure the + and - are in the right way.

Step 4: Code for the LEDs

Copy and paste this code!

/*

Blink Turns on an LED on for one second, then off for one second, repeatedly.
Most Arduinos have an on-board LED you can control. On the Uno and Leonardo, it is attached to digital pin 13. If you're unsure what pin the on-board LED is connected to on your Arduino model, check the documentation athttp://arduino.cc This example code is in the public domain. modified 8 May 2014 by Scott Fitzgerald * / the setup function runs once when you press reset or power the board void setup() { // initialize digital pin 13 as an output. pinMode(13, OUTPUT); } // the loop function runs over and over again forever void loop() { digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(13, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second }

Blink Turns on an LED on for one second, then off for one second, repeatedly.

Most Arduinos have an on-board LED you can control. On the Uno and Leonardo, it is attached to digital pin 13. If you're unsure what pin the on-board LED is connected to on your Arduino model, check the documentation at http://arduino.cc

This example code is in the public domain.

modified 8 May 2014 by Scott Fitzgerald *

/ the setup function runs once when you press reset or power the board void setup() { // initialize digital pin 13 as an output. pinMode(13, OUTPUT); }

// the loop function runs over and over again forever void loop() { digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level) delay(1000); // wait for a second digitalWrite(13, LOW); // turn the LED off by making the voltage LOW delay(1000); // wait for a second }

Step 5: What Will It Look Like When It Is Done

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