Blinking an LED connected to one of the GPIO pin, Adjusting the brightness of an LED Adjust the brightness of an LED

Blinking an LED connected to one of the GPIO pin, Adjusting the brightness of an LED Adjust the brightness of an LED

• 1.
  Program-2
• 2.
  Accessing GPIO pinsusing Python a. Installing GPIO Zero library. First, update your repositories list: sudo apt update Then install the package for Python sudo apt install python3-gpiozero b. Blinking an LED connected to one of the GPIO pin c. Adjusting the brightness of an LED Adjust the brightness of an LED (0 to 100, where 100 means maximum brightness) using the in-built PWM wavelength.
• 3.
  b. Blinking anLED connected to one of the GPIO pin Hardware Required Raspberry Pi LED 220Ω or 330Ω resistor Breadboard and jumper wires Circuit: LED positive (+) → GPIO17 LED negative (–) → 220 Ω resistor → GND
• 6.
  Program from gpiozero importLED from time import sleep led = LED(17) while True: print("LED ON") led.on() sleep(1) print("LED OFF") led.off() sleep(1)
• 7.
  Line of CodeExplanation from gpiozero import LED Imports the LED class from the GPIO Zero library. from time import sleep Imports the sleep() function, led = LED(17) Creates an LED object connected to GPIO pin 17. while True: Starts an infinite loop so the program keeps running until it is stopped. led.on() Turns the LED ON by sending a HIGH signal to GPIO pin 17. sleep(1) Waits for 1 second while the LED remains ON. led.off() Turns the LED OFF by sending a LOW signal to GPIO pin 17. sleep(1) Waits for 1 second while the LED remains OFF. Then the loop repeats.
• 8.
  GPIO Zero library: LEDclass led.on() → Turns the LED ON. led.off() → Turns the LED OFF. led.toggle() → Changes the LED state (ON to OFF or OFF to ON). led.blink() → Makes the LED blink automatically.
• 9.
  c) Adjusting thebrightness of an LED Adjust the brightness of an LED (0 to 100, where 100 means maximum brightness) using the in-built PWM wavelength. from gpiozero import PWMLED from time import sleep # Connect LED to GPIO 18 led = PWMLED(18) while True: # Increase brightness for i in range(0, 101, 10): led.value = i / 100 print(f"Brightness: {i}%") sleep(0.5) # Decrease brightness for i in range(100, -1, -10): led.value = i / 100 print(f"Brightness: {i}%") sleep(0.5)