Easy LED Sequential Control using Arduino UNO

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What is Arduino UNO ?

Arduino UNO is a microcontroller board which can be connected on a computer using a USB cable, or it can be supply by Ac-to-Dc Adapter. Uno has 14 output and input pins, on that 14, 6 of them can be used as a PWM outputs.

To download the latest Arduino IDE : Pls click here

What will i learn in following this tutorial ?

How to use Arduino Uno and Arduino IDE
Control the LED sequentially

Components Needed

Arduino Uno
(4) Jumping Wires
(3) LED Blue , Green , Red
Breadboard
(3) 220 ohms resistor
USB cable

Difficulty

Easy

Tutorial :
Step 1 : Physical Connection of LED to Arduino UNO.

Connect the following :

VCC to 5V of Arduino Uno
Led to Resistor
Resistor to Ground
Blue LED on pin 13 of Arduino
Green LED on pin 12 of Arduino
Red LED on pin 11 of Arduino

Step 2 : Connection of Arduino IDE to Arduino UNO

Connect the Arduino UNO using the USB cable to a computer.
Open your Arduino IDE, go to Tools > Board > and choose Arduino/Genuino Uno.

Step 3 : The Code

Just follow the codes below.

int LED1 = 13;
int LED2 = 12;
int LED3 = 11;

void setup()
 {
   pinMode(LED1, OUTPUT);
   pinMode(LED2, OUTPUT);
   pinMode(LED3, OUTPUT);
}


void loop()
 {
  digitalWrite(LED1, HIGH);    
  delay(200);                  
  digitalWrite(LED2, HIGH);    
  delay(200);                  
  digitalWrite(LED3, HIGH);   
  delay(200);                 
  digitalWrite(LED1, LOW);  
  delay(300);                  
  digitalWrite(LED2, LOW);    
  delay(300);                 
  digitalWrite(LED3, LOW);     
  delay(300);                
}

Step 4 : Compile and Run

After compiling, don't forget to upload the sketch before running.

Remember that the LED has two tails, the short tail will be the negative and the long tail will be the positive. If you have change the code, compile and upload it again so that the latest code will run.

Thank you for following my Tutorial

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