[program] Led Strip Controling

Pre-requisites:

Install 

sudo apt-get update

sudo apt-get install pigpio python-pigpio python3-pigpio

Program:

Simple program to control a SMD5050 Led Strip

import time

import pigpio

import random

#the pin code uses the BCM number

v_pinG = 14 #GREEN

v_pinR = 15 #RED

v_pinB = 23 #BLUE

v_pio = pigpio.pi()

#routines

def SetLed(v_gpio, value):

  v_pio.set_PWM_dutycycle(v_gpio, value)

  print("Led: ", v_gpio, "Value:", value)

def InitLed():

  SetLed(v_pinR, 0)

  SetLed(v_pinG, 0)

  SetLed(v_pinB, 0)

def TestColor(v_color):

  for i in range(255):

    SetLed(v_color, i)

    time.sleep(0.025)

#turn off lights

InitLed()

#test colors

TestColor(v_pinR)

TestColor(v_pinG)

TestColor(v_pinB)

input("Press a Ley to start random colors")

#random colors until keyboard interuption

try:

  while True:

    v_value = random.randint(1,255)

    SetLed(v_pinR, v_value)

    v_value = random.randint(1,255)

    SetLed(v_pinG, v_value)

    v_value = random.randint(1,255)

    SetLed(v_pinB, v_value)

    time.sleep(0.2)

except KeyboardInterrupt:

  print("Aborting program")

  pass

#turn off lights

InitLed()

#end program

v_pio.stop()

Sources:

• https://dordnung.de/raspberrypi-ledstrip/
• http://abyz.me.uk/rpi/pigpio/index.html