The switch is a component that connect two points in a circuit when you press it.LED turns on when you press the button.
Hardware Required
- Push Button.
- LED
- Resistor
- Raspberry pi
- Jumper wires
- Breadboard
Circuit
Code
- Create a new text file “switch.py” by typing the following “nano switch.py”
- Now type the following code
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM) //BCM is broadcom which specifies the actual pin number considered by broadcom chip
GPIO.setwarnings(False) //Ignore warnings
GPIO.setup(24, GPIO.IN, pull_up_down=GPIO.PUD_DOWN) //Set pin 24 to be an input pin and set initial value to be pulled low (off)
GPIO.setup(23,GPIO.OUT,initial=GPIO.LOW) //set pin 23 as output & set initial value to low(off)
if GPIO.input(24) == GPIO.HIGH:
print ("Button pressed") //This line prints the status on to the terminal.
GPIO.output(23,GPIO.HIGH)
time.sleep(3) //delay function pauses the program for 3 secs
else:
print ("Button not pressed")
GPIO.output(23,GPIO.LOW)
time.sleep(3)
GPIO.cleanup() //To reset the pin status
- To run type python switch.py in the terminal.
