A program written in Python to control an LED light from a Raspberry Pi.

blinking_led.py

#!/usr/bin/env python
#
# blinking_led.py
# @author Nate Heppard
# @date 1 October 2020

import RPi.GPIO as GPIO                             # Import RasPi GPIO library
from time import sleep                              # Import sleep function from time module

LED_PIN = 23                                        # Pin used to control LED

GPIO.setwarnings(False)                             # Ignore GPIO warnings
GPIO.setmode(GPIO.BCM)                              # Use BCM GPIO pin numbering
GPIO.setup(LED_PIN, GPIO.OUT, initial=GPIO.LOW)     # Set LED_PIN to be an output pin, set initial value to low (off)

# Run the loop forever
while True:
    GPIO.output(LED_PIN, GPIO.HIGH)     # Set LED_PIN to high (on)
    sleep(1)                            # Sleep for 1 second
    GPIO.output(LED_PIN, GPIO.LOW)      # Set LED_PIN to low (off)
    sleep(1)