Working with two LEDs and two PUSH BUTTONs

This project illustrates the use of two PUSH BUTTONS to operate two LEDs

Apr 24, 2019

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learning

starter

beginner

Devices & Components

Arduino Uno Rev3

Resistor 1k ohm

LED (generic)

Jumper wires (generic)

Tactile Switch, Top Actuated

Breadboard (generic)

Software & Tools

Arduino IDE

Project description

Code

Two LEDs and Two Push Buttons with opposite effect

arduino

Two LEDs and Two Push Buttons with opposite effect

1const int BUTTON1 = 2;
2const int BUTTON2 = 4;
3const int LED1 = 8;
4const  int LED2 = 12;
5int BUTTONstate1 = 0;
6int BUTTONstate2 = 0;
7
8void setup()
9{
10  pinMode(BUTTON1, INPUT);
11  pinMode(BUTTON2, INPUT);
12  pinMode(LED1, OUTPUT);
13  pinMode(LED2, OUTPUT);
14}
15
16void loop()
17{
18  BUTTONstate1 = digitalRead(BUTTON1);
19  if (BUTTONstate1 == HIGH)
20  {
21    digitalWrite(LED1, HIGH);
22  } 
23  else{
24    digitalWrite(LED1, LOW);
25  }
26  BUTTONstate2 = digitalRead(BUTTON2);
27  if (BUTTONstate2 == HIGH)
28  {
29    digitalWrite(LED2, LOW);
30  } 
31  else{
32    digitalWrite(LED2, HIGH);
33  }
34}
35

const int BUTTON1 = 2;
const int BUTTON2 = 4;
const int LED1 = 8;
const  int LED2 = 12;
int BUTTONstate1 = 0;
int BUTTONstate2 = 0;

void setup()
{
  pinMode(BUTTON1, INPUT);
  pinMode(BUTTON2, INPUT);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
}

void loop()
{
  BUTTONstate1 = digitalRead(BUTTON1);
  if (BUTTONstate1 == HIGH)
  {
    digitalWrite(LED1, HIGH);
  } 
  else{
    digitalWrite(LED1, LOW);
  }
  BUTTONstate2 = digitalRead(BUTTON2);
  if (BUTTONstate2 == HIGH)
  {
    digitalWrite(LED2, LOW);
  } 
  else{
    digitalWrite(LED2, HIGH);
  }
}

Downloadable files

Breadboard Diagram

Make connections as shown in the figure.

Breadboard Diagram

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