berlin_clock.py

import time
from neopixel import Neopixel
NO_OF_LEDS = 12

pixelssec = Neopixel(8, 0, 1, "GRB")
pixelsmin1 = Neopixel(11, 2, 22, "GRB")
pixelsmin2 = Neopixel(12, 3, 18, "GRB")
rtc = machine.RTC()

WHITE = (80, 80, 80)
YELLOW = (90, 40, 0)
RED = (90, 5, 0)
BLACK = (0, 0, 0)

def set_hour(hr):
      #first hours row
      hrRow1NumLights = 12
      hrRow1Remainder = hr//5
  
      #second hour row
      hrRow2NumLights = 12
      hrRow2Remainder = hr%5
      
      pixelshr1 = Neopixel(hrRow1NumLights, 1, 9, "GRB")
      pixelshr1.set_pixel_line(0, hrRow1NumLights - 1, BLACK)
      for i in range(hrRow1Remainder):
          pixelshr1.set_pixel(hrRow1NumLights - 3*i - 2, RED)
          pixelshr1.set_pixel(hrRow1NumLights - 3*i - 3, RED)
      pixelshr1.show()
      
      
      pixelshr2= Neopixel(hrRow2NumLights, 1, 13, "GRB")
      pixelshr2.set_pixel_line(0, hrRow2NumLights - 1, BLACK)
      for i in range(hrRow2Remainder):
          pixelshr2.set_pixel(hrRow2NumLights - 3*i - 2, RED)
          pixelshr2.set_pixel(hrRow2NumLights - 3*i - 3, RED)
      pixelshr2.show()


def set_min(mins):
    minRow1NumLights = 11
    minRow2NumLights = 12
    minRow1Remainder = mins // 5
    minRow2Remainder = mins % 5


    pixelsmin1.set_pixel_line(0, minRow1NumLights - 1, BLACK)
    for i in range(minRow1Remainder):
        if (i + 1) % 3 == 0:
            pixelsmin1.set_pixel(minRow1NumLights - i - 1, RED)
        else:
            pixelsmin1.set_pixel(minRow1NumLights - i - 1, YELLOW)

    pixelsmin2.set_pixel_line(0, minRow2NumLights - 1, BLACK)
    for i in range(minRow2Remainder):
        pixelsmin2.set_pixel(minRow1NumLights - 3*i - 1, YELLOW)
        pixelsmin2.set_pixel(minRow1NumLights - 3*i - 2, YELLOW)

    pixelsmin1.show()
    pixelsmin2.show()


def set_sec(secs):
    if secs%2 == 1:
       pixelssec.set_pixel_line(0, 8, YELLOW)
    else:
        pixelssec.set_pixel_line(0, 8, BLACK)
    pixelssec.show()
    
while True:
  timestamp = rtc.datetime()
  _, _, _, _, hr, mins, secs, _ = timestamp

  print("The time now is" ,hr, ":", mins, ":", secs)    
  time.sleep(0.3)

  set_sec(secs)
  set_min(secs)
  set_hour(secs % 24)