LED Bar Raspberry Pi Project

To make a flowing water light, you will need the following:

1. 11 wires
2. 1 bar graph LED
3. 1 breadboard
4. 10 220 ohm resistors
5. 1 raspberry pi 3

Now, place the pieces like the following:

Once you are done putting the pieces in the right place, type the following code:

import RPi.GPIO as GPIO
import time

ledPins = [11, 12, 13, 15, 16, 18, 22, 3, 5, 24]


def setup():
    GPIO.setmode(GPIO.BOARD)
    GPIO.setup(ledPins, GPIO.OUT)
    GPIO.output(ledPins, GPIO.HIGH)


def loop():
    while True:
        for pin in ledPins:
            GPIO.output(pin, GPIO.LOW)
            time.sleep(0.1)
            GPIO.output(pin, GPIO.LOW)
        for pin in ledPins[::-1]:
            GPIO.output(pin, GPIO.LOW)
            time.sleep(0.1)
            GPIO.output(pin, GPIO.HIGH)


def destroy():
    GPIO.cleanup()


if __name__ == '__main__':
    print('Program is starting... \n')
    setup()
    try:
        loop()
    except KeyboardInterrupt:
        destroy()

Once you run the program, the LED bar makes a flowing water lamp!

Changing The Program

You can also modify the program so it seems like something that shows the power of something! Just remove line 18 and voilà!