Merge pull request #1366 from adafruit/io_neopixel_sign

IoT neopixel sign code

Author: ladyada

IoT_NeoPixel_Sign/code.py

@@ -0,0 +1,81 @@
+import ssl
+import board
+import neopixel
+import adafruit_requests
+import socketpool
+import wifi
+from adafruit_io.adafruit_io import IO_HTTP
+from adafruit_pixel_framebuf import PixelFramebuffer
+# adafruit_circuitpython_adafruitio usage with native wifi networking
+
+# Neopixel matrix configuration
+PIXEL_PIN = board.IO6
+PIXEL_WIDTH = 12
+PIXEL_HEIGHT = 12
+
+# secrets.py has SSID/password and adafruit.io
+try:
+    from secrets import secrets
+except ImportError:
+    print("WiFi secrets are kept in secrets.py, please add them there!")
+    raise
+AIO_USERNAME = secrets["aio_username"]
+AIO_KEY = secrets["aio_key"]
+
+# LED matrix creation
+PIXELS = neopixel.NeoPixel(
+    PIXEL_PIN, PIXEL_WIDTH * PIXEL_HEIGHT, brightness=0.5, auto_write=False,
+)
+
+PIXEL_FRAMEBUF = PixelFramebuffer(
+    PIXELS,
+    PIXEL_WIDTH,
+    PIXEL_HEIGHT,
+    alternating=True,
+    rotation=1,
+    reverse_x=True
+    )
+
+# Adafruit.io feeds setup
+QUOTE_FEED = "sign-quotes.signtext"
+COLOR_FEED = "sign-quotes.signcolor"
+CURRENT_TEXT = "Merry Christmas!"
+CURRENT_COLOR = 0xFFFFFF
+
+# Helper function to get updated data from Adafruit.io
+def update_data():
+    global CURRENT_TEXT, CURRENT_COLOR
+    print("Updating data from Adafruit IO")
+    try:
+        quote_feed = IO.get_feed(QUOTE_FEED)
+        quotes_data = IO.receive_data(quote_feed["key"])
+        CURRENT_TEXT = quotes_data["value"]
+        color_feed = IO.get_feed(COLOR_FEED)
+        color_data = IO.receive_data(color_feed["key"])
+        CURRENT_COLOR = int(color_data["value"][1:], 16)
+    # pylint: disable=broad-except
+    except Exception as error:
+        print(error)
+
+
+# Connect to WiFi
+print("Connecting to %s" % secrets["ssid"])
+wifi.radio.connect(secrets["ssid"], secrets["password"])
+print("Connected to %s!" % secrets["ssid"])
+
+# Setup Adafruit IO connection
+POOL = socketpool.SocketPool(wifi.radio)
+REQUESTS = adafruit_requests.Session(POOL, ssl.create_default_context())
+# Initialize an Adafruit IO HTTP API object
+IO = IO_HTTP(AIO_USERNAME, AIO_KEY, REQUESTS)
+
+
+while True:
+    update_data()
+    print("Displaying", CURRENT_TEXT, "in", hex(CURRENT_COLOR))
+
+    for i in range(12 * len(CURRENT_TEXT) + PIXEL_WIDTH):
+        PIXEL_FRAMEBUF.fill(0x000000)
+        PIXEL_FRAMEBUF.pixel(0, 0, 0x000000)
+        PIXEL_FRAMEBUF.text(CURRENT_TEXT, PIXEL_WIDTH - i, 3, CURRENT_COLOR)
+        PIXEL_FRAMEBUF.display()