Simple Blinking LED (External)

This is a basic tutorial to get you going with Arduiono. You will learn how to make an external LED blink. Simple as that.

Jan 12, 2021

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lights

Components and supplies

Arduino Uno Rev3

LED (generic)

Resistor 10k ohm

Jumper wires (generic)

Breadboard (generic)

Project description

Code

Blinking LED Code

arduino

This code makes the external LED connected to pin 13

1int led = 13; // set the "led" variable as 13
2 
3void setup() {                
4  pinMode(led, OUTPUT);   // designate port 13 as output
5}
6  
7void loop() {
8  digitalWrite(led, HIGH);   // turn the led on
9  delay(1000);               // wait for 1 second
10  digitalWrite(led, LOW);    // turn the  led off
11  delay(1000);               // wait for a second
12}

int led = 13; // set the "led" variable as 13
 
void setup() {                
  pinMode(led, OUTPUT);   // designate port 13 as output
}
  
void loop() {
  digitalWrite(led, HIGH);   // turn the led on
  delay(1000);               // wait for 1 second
  digitalWrite(led, LOW);    // turn the  led off
  delay(1000);               // wait for a second
}

Downloadable files

Blinking LED Diagram

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