Peter Neufeld
Published

ATOM Wall Clock

Wall clock shows time on two concentric NeoPixel LED rings. The inner ring shows the hours, the outer ring shows minutes and seconds

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ATOM Wall Clock

Things used in this project

Hardware components

M5Stack ATOM MATRIX or lite
×1
Adafruit NeoPixel Digital RGB LED Strip 144 LED, 1m White
Adafruit NeoPixel Digital RGB LED Strip 144 LED, 1m White
×1
switch regulator, step down 12V-24V to 4V8
×1

Story

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Schematics

schematic of ATOM Wall Clock

The simple schematic of the ATOM Wall Clock

Code

Micropython code for ATOM Wall Clock

MicroPython
Code for the 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
###########################################################

Credits

Peter Neufeld

Peter Neufeld

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