Simple GPIO input/output program for raspberry pi

By: prayag nao

Today we are going to discuss about simple I/O program of raspberry pi.here is pin diagram of raspberry.

so we are going to talk about GPIO I/O program then we need 2 pins,one for output and one for input from button.

material required:

Raspberry pi.
A push Button.
some connector wires.
A LED.

connections:

connect 5v pin of raspberry pi to one pin of push button.
Now connect one end of push button ti 11th pin of raspberry pi.
Now connect 13th pin to +ev pin of led and ground to -ev pin of led (you should use a resistance of 330omhs in series with LED).

Programming:

open text editor of raspberry pi and paste the following code.

      import GPIO.RPi as GPIO            ##import GPIO library
import time
GPIO.setmode(GPIO.BOARD)    ##use board pin numbering
GPIO.setup(11,GPIO.IN)          ##set 11th pin as Input pin
GPIO.setup(13,GPIO.OUT) ## set 13th pin as output pin

while 1:
if GPIO.input(11):
   GPIO.output(13,1) ## Turn on led
   time.sleep(1)           ## 1 second delay
             GPIO.output(13,0) ## Turn off led
             time.sleep(1)

Now save the following code with name of input.py.
Run this code as root user and you will see when we press button led will start blinking in 1 second delay.

For any query pls comment below.

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