Published March 8, 2023 © CERN-OHL2

LED blink using Raspberry Pi

In this project, we are going to construct a project-led blink using Raspberry pi.

IntermediateFull instructions provided5 hours9,896

Things used in this project

Hardware components

Raspberry Pi 3 Model B

LED (generic)

Resistor 220 ohm

Story

Rapberry Pi

This is the board of raspberry pi. The raspberry pi has 40 pins and it has 26 GPIO pins and 3 power and many other pins.

Here the pin description of Raspberry Pi:-

pin description

LED Blinking using a Raspberry Pi is a simple and popular project for beginners in the field of electronics and programming. It involves connecting an LED to one of the GPIO (General Purpose Input/Output) pins of the Raspberry Pi and controlling its on and off state using Python programming.

Here are the steps to perform LED Blink using a Raspberry Pi

Gather the required components: Raspberry Pi board, breadboard, LED, resistor (220 Ohm), jumper wires.
Connect the LED to the breadboard. Connect the anode (longer leg) of the LED to the positive rail of the breadboard, and connect the cathode (shorter leg) of the LED to a 220 Ohm resistor.
Connect one end of the resistor to the cathode of the LED and the other end to the negative rail of the breadboard.
Connect the jumper wires to the GPIO pin of the Raspberry Pi. Use a female to male jumper wire to connect the positive rail of the breadboard to the 3.3V pin of the Raspberry Pi. Use another female to male jumper wire to connect the negative rail of the breadboard to the GND pin of the Raspberry Pi.
Connect a male to male jumper wire to the GPIO pin that you want to use for the LED. Connect the other end of the jumper wire to the anode of the LED.
Open the Python editor on the Raspberry Pi and write the Python code to control the GPIO pin. Here is a sample code to blink an LED connected to GPIO pin 17:
Save the Python file and run it using the command python filename.py in the terminal.
Save the Python file and run it using the command python filename.py in the terminal.
The LED connected to the GPIO pin 17 will blink on and off every second.

Note: Always use a resistor in series with the LED to limit the current flowing through the LED and prevent it from burning out. Also, be careful while connecting the components to the Raspberry Pi and follow the proper wiring diagram to avoid damaging the board.

Code

Code for Led blink

import RPi.GPIO as GPIO # Import Raspberry Pi GPIO library
from time import sleep # Import the sleep function from the time module

GPIO.setwarnings(False) # Ignore warning for now
GPIO.setmode(GPIO.BOARD) # Use physical pin numbering
GPIO.setup(18, GPIO.OUT, initial=GPIO.LOW) # Set pin 18 to be an output pin and set initial value to low (off)

while True: # Run forever
 GPIO.output(18, GPIO.HIGH) # Turn on
 sleep(1) # Sleep for 1 second
 GPIO.output(18, GPIO.LOW) # Turn off
 sleep(1) # Sleep for 1 second

Credits

RAJESH SINHA

14 projects • 8 followers

Hey there! I'm Rajesh. I'm passionate about building innovative projects that solve real-world problems and make people's lives easier.

LED blink using Raspberry Pi

Things used in this project

Hardware components

Story

Schematics

screenshot_(130)_gGocNDzTVQ.png

Code

Code for Led blink

Credits

RAJESH SINHA

Comments

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LED blink using Raspberry Pi

LED blink using Raspberry Pi

Things used in this project

Hardware components

Story

Schematics

screenshot_(130)_gGocNDzTVQ.png

Code

Code for Led blink

Credits

RAJESH SINHA

Comments

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