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Led Pushbutton

The document describes how to program an LED light to blink on and off using a microcontroller by setting the pin as output and using digitalWrite and delay functions. It also describes how to program a push button switch to turn an LED on when pressed by setting the button pin as input and reading its state using digitalRead.

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Moa Anwar
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47 views2 pages

Led Pushbutton

The document describes how to program an LED light to blink on and off using a microcontroller by setting the pin as output and using digitalWrite and delay functions. It also describes how to program a push button switch to turn an LED on when pressed by setting the button pin as input and reading its state using digitalRead.

Uploaded by

Moa Anwar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Programming of Blinking LED Light

int ledPin=8; //definition digital 8 pins as pin to control the LED


// the setup function runs once when you press reset or power the board
void setup()
{
pinMode(ledPin,OUTPUT); //Set the digital 8 port mode, OUTPUT:
Output mode
}
// the loop function runs over and over again forever
void loop()
{
digitalWrite(ledPin,HIGH); //turn the LED on (HIGH is the voltage
level)
delay(1000); //Set the delay time, 1000 = 1S
digitalWrite(ledPin,LOW); //turn the LED off by making the voltage LOW
delay(1000); //Set the delay time, 1000 = 1S
}

Programming of Push Button Switch

// constants won't change. They're used here to set pin numbers:


const int buttonPin = 2; // the number of the pushbutton pin
const int ledPin = 13; // the number of the LED pin

// variables will change:


int buttonState = 0; // variable for reading the pushbutton
status

void setup() {
// initialize the LED pin as an output:
pinMode(ledPin, OUTPUT);
// initialize the pushbutton pin as an input:
pinMode(buttonPin, INPUT);
}

void loop() {
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);

// check if the push button is pressed. If it is, the buttonState is


HIGH:
if (buttonState == HIGH) {
// turn LED on:
digitalWrite(ledPin, HIGH);
} else {
// turn LED off:
digitalWrite(ledPin, LOW);
}
}

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