AIM: Programming of Raspberry Pi to take feedback from the switch
APPARATUS: Raspberry Pi with Raspbian Pi OS, LEDs, Resistors, Push button switch, USB Keyboard, mouse LCD Monitor, HDMI to VGA converter, 5V Power Adapter.
CIRCUIT DIAGRAM:
Procedure:
1. The kit consists of Raspberry Pi 3B+, Power adapter, HDMI to VGA converter cable and PCB with LEDs connected and the 9 pin connector.
2. One two pin and other five pin male connectors are available on the PCB.
3. The two pin connector is of 3.3V and other five pin connector consists of male connector in the sequence of Ground, LED1, LED 2, SW1 and SW2.
4. Two LEDs and Two switches are available. You can use one pair of LED and a switch ot both LEDs and two switches.
5. Connect the circuit as shown in the circuit above. Use Female to Female connecting wires to connect Raspberry Pi pins to the Led pins and switch, available on the PCB.
6. Run the program using “run” button in the IDE, it will ask you to save the file. If not saved before, save it with file name extension .py
7. Now press the switch (SW1), you will observe LED is glowing. After releasing the switch, the LED turns off. Press second switch (SW2), you will observe other LED is glowing and turns off after releasing the SW2.
Program 1:
# PROGRAM TO TAKE FEEDBACK FROM THE SWITCH
import RPi.GPIO as GPIO # Import GPIO Library
import time # Import Time Library
GPIO.setmode(GPIO.BOARD) # Set the pins as the pin numbers
GPIO.setup(8,GPIO.IN) # Set pin 8 as input
GPIO.setup(10,GPIO.OUT) # Set pin 10 as output
GPIO.output(10, False) #Turn LED OFF
while(True):
x = GPIO.input (8) # Name the pin 8 as “x”
#single pressed
If (x==0): # Check logically if the key is pushed
GPIO.output (10, True) # Make output pin 10 HIGH, Turn ON LED
print ("Switch Pressed") #Print Switch is pressed
else:
GPIO.output (10, False) # Make output pin 10 LOW, Turn OFF LED
print ("Switch Released") #Print Switch is released
0 Comments