Merge pull request #150 from brentru/add-neopixel-example

Add new basics example for use with NeoPixel

Author: brentru

examples/basics/neopixel.py

@@ -0,0 +1,69 @@
+"""
+`rgb_led.py`
+=======================================================================
+Control a NeoPixel RGB LED using Adafruit IO and Python
+
+Tutorial Link: https://learn.adafruit.com/adafruit-io-basics-color
+
+Adafruit invests time and resources providing this open source code.
+Please support Adafruit and open source hardware by purchasing
+products from Adafruit!
+
+Author(s): Brent Rubell for Adafruit Industries
+Copyright (c) 2023 Adafruit Industries
+Licensed under the MIT license.
+All text above must be included in any redistribution.
+
+Dependencies:
+    - Adafruit_Blinka
+        (https://github.com/adafruit/Adafruit_Blinka)
+    - Adafruit_CircuitPython_NeoPixel
+        (https://github.com/adafruit/Adafruit_CircuitPython_NeoPixel)
+"""
+import time
+import board
+import neopixel
+from Adafruit_IO import Client, Feed, RequestError
+
+# Choose an open pin connected to the Data In of the NeoPixel strip, i.e. board.D18
+# NeoPixels must be connected to D10, D12, D18 or D21 to work.
+pixel_pin = board.D18
+
+# The number of NeoPixels
+num_pixels = 1
+
+# The order of the pixel colors - RGB or GRB. Some NeoPixels have red and green reversed!
+ORDER = neopixel.GRB
+
+pixels = neopixel.NeoPixel(
+    pixel_pin, num_pixels, brightness=0.2, auto_write=False, pixel_order=ORDER
+)
+
+# Set to your Adafruit IO key.
+# Remember, your key is a secret,
+# so make sure not to publish it when you publish this code!
+ADAFRUIT_IO_KEY = 'YOUR_AIO_KEY'
+
+# Set to your Adafruit IO username.
+# (go to https://accounts.adafruit.com to find your username)
+ADAFRUIT_IO_USERNAME = 'YOUR_AIO_USERNAME'
+
+# Create an instance of the REST client.
+aio = Client(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)
+
+try: # if we have a 'color' feed
+    color = aio.feeds('color')
+except RequestError: # create an `color` feed
+    feed = Feed(name='color')
+    color = aio.create_feed(feed)
+
+while True:
+    # get the value of the Adafruit IO `color` feed
+    color_val = aio.receive(color.key)
+    # Print hex value
+    print('Received Color HEX: ', color_val)
+    pixels.fill(color_val.value)
+    pixels.show()
+
+    # let's sleep/wait so we don't flood adafruit io's servers with requests
+    time.sleep(3)