TIMER OR LED BLINKING

BLINKING ONCE

import RPi.GPIO as gpio #adds main header file
import time           #adds timer header file
gpio.setmode(gpio.BOARD)           #sets as the pin number in board
gpio.setwarnings(False)           #disable warnings
gpio.setup(40,gpio.OUT) #set 40 pin as output
gpio.output(40,1)               #writes a digital value to it
time.sleep(1)               #sleeps one seconds
gpio.output(40,0)               #writes a digital value to it

BLINKING INFINITELY

import RPi.GPIO as gpio #adds main header file
import time #adds timer header file
gpio.setmode(gpio.BOARD) #sets as the pin number in board
gpio.setwarnings(False) #disable warnings
gpio.setup(40,gpio.OUT) #set 40 pin as output
while True: #starts infinite loop
    gpio.output(40,1) #writes a digital value to it
    time.sleep(1) #sleeps one seconds
    gpio.output(40,0) #writes a digital value to it
    time.sleep(1) #sleeps one seconds

BLINKING FASTER

import RPi.GPIO as gpio #adds main header file
import time           #adds timer header file
gpio.setmode(gpio.BOARD) #sets as the pin number in board
gpio.setwarnings(False) #disable warnings
gpio.setup(40,gpio.OUT) #set 40 pin as output
while True: #starts infinite loop
    gpio.output(40,1) #writes a digital value to it
    time.sleep(.1) #sleeps one seconds
    gpio.output(40,0) #writes a digital value to it
    time.sleep(.1) #sleeps one seconds

LED CHASER USING RASPBERRY PI

import RPi.GPIO as gpio #adds main header file
import time #adds timer header file
gpio.setmode(gpio.BOARD) #sets as the pin number in board
gpio.setwarnings(False) #disable warnings
gpio.setup(40,gpio.OUT) #set 40 pin as output
gpio.setup(38,gpio.OUT)
gpio.setup(36,gpio.OUT)    #set 40 pin as output
while True: #starts infinite loop
    gpio.output(40,1) #writes a digital value to it
    gpio.output(38,0)
    gpio.output(36,0)    #writes a digital value to it
    time.sleep(1) #sleeps one seconds
    gpio.output(40,0) #writes a digital value to it
    gpio.output(38,1)
    gpio.output(36,0)    #writes a digital value to it
    time.sleep(1) #sleeps one seconds
    gpio.output(40,0)    #writes a digital value to it
    gpio.output(38,0)
    gpio.output(36,1)    #writes a digital value to it
    time.sleep(1)        #sleeps one seconds