adafruit Matrix Portal Multiple 64x32 LED panel wall clock supporting multiple time zones.

code.py

# SPDX-FileCopyrightText: 2020 John Park for Adafruit Industries
#
# SPDX-License-Identifier: MIT

# Metro Matrix Clock
# Runs on Airlift Metro M4 with 64x32 RGB Matrix display & shield

from time import time
import time
import board
import displayio
import terminalio

from adafruit_display_text.label import Label
from adafruit_bitmap_font import bitmap_font
from adafruit_matrixportal.network import Network
from adafruit_matrixportal.matrix import Matrix
from adafruit_datetime import datetime, timezone
from tzdb import timezone



BLINK = True
DEBUG = False

# Get wifi details and more from a secrets.py file
try:
    from secrets import secrets
except ImportError:
    print("WiFi secrets are kept in secrets.py, please add them there!")
    raise
print("    Multi-Timezone Wall Clock")
print("Time will be set for {}".format(secrets["timezone"]))

# --- Display setup ---
base_width = 128
base_height = 32
chain_across = 1
tile_down = 1

width = base_width * chain_across
height = base_height * tile_down

matrix = Matrix(width=128, height=32, tile_rows=1)
display = matrix.display


network = Network(status_neopixel=board.NEOPIXEL, debug=False)


# --- Drawing setup ---
group = displayio.Group()  # Create a Group
bitmap = displayio.Bitmap(128, 32, 2)  # Create a bitmap object,width, height, bit depth
color = displayio.Palette(5)  # Create a color palette
color[0] = 0x000000  # black background
color[1] = 0xFF0000  # red
color[2] = 0xCC4000  # amber
color[3] = 0x85FF00  # greenish
color[4] = 0x09ff00 # green

# Create a TileGrid using the Bitmap and Palette
tile_grid = displayio.TileGrid(bitmap, pixel_shader=color)
group.append(tile_grid)  # Add the TileGrid to the Group
display.show(group)

if not DEBUG:
    font = bitmap_font.load_font("/IBMPlexMono-Medium-14.bdf")
else:
    font = terminalio.FONT

clock_label = Label(font)

#zone_label = Label(font, text="LOCAL    UTC ", color=color[4])
#zone_label = Label(font, text="PACIFIC  LOCAL  UTC", color=color[4])
zone_label = Label(font, text="PACIFIC  LOCAL ", color=color[4])


zone_label.y = 24
#zone_label.x = (round(display.width / 2 - zone_label.bounding_box[2] / 2))
zone_label.x = (round(128 / 2 - zone_label.bounding_box[2] / 2))
zone_label.scale =  1

def update_time(*, hours=None, minutes=None, seconds=None, show_colon=False):
    currDate = datetime.now()
    print("UTC Time: ", currDate)
    print("CurrDate Offset: ", currDate.utcoffset())

    utcHour = currDate.hour
    utcMinute = currDate.minute    

    now = currDate + timezone('America/New_York').utcoffset(currDate)
#    now = currDate

    print("Eastern Time: ", now)

    pacific = currDate + timezone('America/Los_Angeles').utcoffset(currDate)
    print("Pacific Time: ", pacific)

    #now = time.localtime()

    if hours is None:
        hours = now.hour
    if minutes is None:
        minutes = now.minute
    if seconds is None:
        seconds = now.second

    clock_label.color = color[1]

    hours2 = pacific.hour

    colon = ":"

    # clock_label.text = "{hours:02d}{colon}{minutes:02d}{colon}{seconds:02d}{hours2:02d}{colon}{minutes:02d}{colon}{seconds:02d}".format(
    #     hours=hours, hours2=hours2, minutes=minutes, seconds=seconds, colon=colon
    # )
    # clock_label.text = "{hours2:02d}{colon}{minutes:02d}{colon}{seconds:02d}{hours:02d}{colon}{minutes:02d}{colon}{seconds:02d}{utcHour:02d}{colon}{utcMinute:02d}{colon}{seconds:02d}".format(
    #     hours=hours, hours2=hours2, minutes=minutes, seconds=seconds, colon=colon, utcHour=utcHour, utcMinute=utcMinute
    # )
    clock_label.text = "{hours2:02d}{colon}{minutes:02d}{colon}{seconds:02d}{hours:02d}{colon}{minutes:02d}{colon}{seconds:02d}".format(
        hours=hours, hours2=hours2, minutes=minutes, seconds=seconds, colon=colon
    )
    bbx, bby, bbwidth, bbh = clock_label.bounding_box
    # Center the label
    clock_label.x = round(128 / 2) - round(bbwidth / 2)
    # clock_label.y = display.height // 2
    clock_label.y = 10
    if DEBUG:
        print("Label bounding box: {},{},{},{}".format(bbx, bby, bbwidth, bbh))
        print("Label x: {} y: {}".format(clock_label.x, clock_label.y))


last_check = None
update_time(show_colon=True)  # Display whatever time is on the board
group.append(clock_label)  # add the clock label to the group
group.append(zone_label)  # add the zone label to the group

while True:
    if last_check is None or time.monotonic() > last_check + 300000:
        try:
            update_time(
                show_colon=True
            )  # Make sure a colon is displayed while updating
            network.get_local_time()  # Synchronize Board's clock to Internet
            last_check = time.monotonic()
        except RuntimeError as e:
            print("Some error occured, retrying! -", e)

    update_time()
    time.sleep(1)