ATOM Wall Clock

import time
from machine import Pin
from neopixel import NeoPixel
#WLAN credentials
SSID   = 'WLAN1_2.4GHz'
PASSWD = 'xyz'
#color for second-hand
RS=0
GS=20
BS=0
#color for minute-hand
RM=60
GM=50
BM=0
#color for hour-hand
RH=60
GH=50
BH=0
#color for background
RB=0
GB=0
BB=0
#color for markers
Rmark=6
Gmark=6
Bmark=6

BUTTON = Pin(39,Pin.IN)

#27= internal Neopixel
# seta a single Pixel on ATOM
# and a smily on ATOM-Matrix
pin = Pin(27,Pin.OUT)
np = NeoPixel(pin, 25)
for i in (0,4,12,15,19,21,22,23):
    np[i] = (int(RM/2),int(GM/2),int(BM/2))
np.write()
#time.sleep(2)

#26 = groveport pin3
#pin = Pin(26,Pin.OUT)

#21  = ATOM-Rueckseite
pin = Pin(21,Pin.OUT)

np = NeoPixel(pin, 85)
for i in range(0,83):
    np[i] = (85-i,i-80,1)
np.write()

import network
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(SSID, PASSWD)
while not wlan.isconnected():
            time.sleep(1)
            print("WLAN-login ...")
print('WLAN:', wlan.ifconfig())

from machine import RTC
rtc = RTC()
t_old = rtc.datetime()
#rtc.datetime((2017, 8, 23, 1, 12, 48, 0, 0)) # set a specific date and time
import ntptime
ntptime.settime() # set the rtc datetime from the remote server

def my_show_neo(t):
##########################
    # correct hh for TZ Berlin, but no DST possible 
    hh = ( t[4]+2 ) % 24 
    mm = t[5]
    ss = t[6]
    print(hh,":",mm,":",ss," BUTTON:",BUTTON.value())
    #   Clear all NeoPixel
    for i in range(0,84):
        np[i] = (RB,GB,BB)
    #   Marker for hours on outer ring 
    for i in range(0,60,5):
        if (i % 15 == 0): 
            np[i] = (Rmark,Gmark,Bmark)
        else:
            np[i] = (int(Rmark/2),int(Gmark/2),int(Bmark/2))
    #   Marker for hours on inner ring
    for i in range(60,85,2):
        if (i % 6 == 0): 
            np[i] = (Rmark,Gmark,Bmark)
        else:
            np[i] = (int(Rmark/2),int(Gmark/2),int(Bmark/2))
    #   set actual hour-LED on inner ring (in three steps depending on minutes)
    if mm > 40:
        hhh = 2
    elif mm > 20:
        hhh = 1
    else:
        hhh = 0
    np[((hh % 12) *2) + 60 + hhh] = (RH,GH,BH)
    #   set actual minute on outer ring
    np[mm] = (RH,GH,BH)
    #   set second on outer ring
    np[ss] = (RS,GS,BS)
    #   Now show the new pixel pattern    
    np.write()

    return
#################################################




print('Current date and timne: ',rtc.datetime())    # get the date and time in UTC
# MAIN_LOOP
TOGGLED_by_BUTTON = 1
xs=0
xm=10 
xh=8
while True:
    if not BUTTON.value():
        TOGGLED_by_BUTTON = 1-TOGGLED_by_BUTTON
        time.sleep(2)

    if TOGGLED_by_BUTTON:
        # --------------------- normalCLOCK-MODUS------------
        t  = rtc.datetime()
        if t[6] == t_old[6]:
            time.sleep(0.1)
        else:        
            my_show_neo(t)
            t_old = t
    else:
        # ---- DEMO-MODUS with fast running minutes and hours
        xs += 60
        if (xs >59):
            xs = 0
            xm += 1
            if (xm >59):
                xm = 0
                xh +=1
                if (xh >24):
                    xh =0
        t = (0,0,0,0,xh,xm,xs)
        my_show_neo(t)
        print ("DEMO:",t)
            
    
#END
###########################################################