adding Blinka NeoPixel countdown code

CircuitPython_Day_2024_Projects/Blinka_NeoPixel_Countdown/code.py

@@ -0,0 +1,78 @@
+# SPDX-FileCopyrightText: 2024 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import os
+import time
+import wifi
+import microcontroller
+import board
+import neopixel
+import adafruit_connection_manager
+import adafruit_requests
+from adafruit_io.adafruit_io import IO_HTTP
+from adafruit_ticks import ticks_ms, ticks_add, ticks_diff
+
+timezone = "America/New_York"
+color = 0xFF00FF
+# The time of the thing!
+EVENT_YEAR = 2024
+EVENT_MONTH = 8
+EVENT_DAY = 16
+EVENT_HOUR = 0
+EVENT_MINUTE = 0
+# we'll make a python-friendly structure
+event_time = time.struct_time((EVENT_YEAR, EVENT_MONTH, EVENT_DAY,
+                               EVENT_HOUR, EVENT_MINUTE, 0,  # we don't track seconds
+                               -1, -1, False))  # we dont know day of week/year or DST
+
+print("Connecting to WiFi...")
+wifi.radio.connect(
+    os.getenv("CIRCUITPY_WIFI_SSID"), os.getenv("CIRCUITPY_WIFI_PASSWORD")
+)
+pool = adafruit_connection_manager.get_radio_socketpool(wifi.radio)
+ssl_context = adafruit_connection_manager.get_radio_ssl_context(wifi.radio)
+requests = adafruit_requests.Session(pool, ssl_context)
+io = IO_HTTP(
+    os.getenv("AIO_USERNAME"), os.getenv("AIO_KEY"), requests
+)
+
+pixel_pin = board.SCL1
+pixel_num = 16
+pixels = neopixel.NeoPixel(pixel_pin, n = pixel_num, brightness=1, auto_write=True)
+pixel_length = 0
+last_length = -1
+
+refresh_clock = ticks_ms()
+refresh_timer = 3600 * 1000  # 1 hour
+first_run = True
+finished = False
+
+while True:
+    if not finished:
+        if ticks_diff(ticks_ms(), refresh_clock) >= refresh_timer or first_run:
+            try:
+                print("Getting time from internet!")
+                now = time.struct_time(io.receive_time(timezone))
+                print(now)
+                total_seconds = time.mktime(now)
+                remaining = time.mktime(event_time) - total_seconds
+                if remaining < 0:
+                    pixel_length = pixel_num + 1
+                    finished = True
+                else:
+                    if now.tm_mon == EVENT_MONTH:
+                        pixel_length = now.tm_mday % (pixel_num + 1)
+                refresh_clock = ticks_add(refresh_clock, refresh_timer)
+            except Exception as e:  # pylint: disable=broad-except
+                print("Some error occured, retrying via reset in 15 seconds! - ", e)
+                time.sleep(15)
+                microcontroller.reset()
+    if last_length != pixel_length:
+        if not pixel_length:
+            pixels.fill(0x000000)
+        else:
+            for i in range(pixel_length):
+                pixels[i] = color
+        last_length = pixel_length
+    first_run = False