very simple demo showing controlling an external strip and onboard neopixels

MagTag_Cheerlights/code.py

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+# SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
+#
+# SPDX-License-Identifier: Unlicense
+import time
+import board
+from adafruit_magtag.magtag import MagTag
+import neopixel
+
+external_pixels = neopixel.NeoPixel(board.D10, 30, brightness=0.3)
+
+# Set up where we'll be fetching data from
+DATA_SOURCE = "http://api.thingspeak.com/channels/1417/field/2/last.json"
+COLOR_LOCATION = ['field2']
+DATE_LOCATION = ['created_at']
+
+magtag = MagTag(
+    url=DATA_SOURCE,
+    json_path=(COLOR_LOCATION, DATE_LOCATION),
+)
+magtag.network.connect()
+
+# Color
+magtag.add_text(
+    text_font="Arial-Bold-12.bdf",
+    text_position=(10, 15),
+    text_transform=lambda x: "New Color {}".format(x),
+)
+# datestamp
+magtag.add_text(
+    text_font="Arial-Bold-12.bdf",
+    text_position=(10, 35),
+    text_transform=lambda x: "Updated on: {}".format(x),
+)
+
+timestamp = None
+while True:
+    if not timestamp or ((time.monotonic() - timestamp) > 10):  # once every 10 seconds...
+        try:
+            value = magtag.fetch()
+            print("Response is", value)
+            magtag.peripherals.neopixel_disable = False
+            color = int(value[0][1:], 16)
+            magtag.peripherals.neopixels.fill(color)
+            external_pixels.fill(color)
+            timestamp = time.monotonic()
+        except (ValueError, RuntimeError) as e:
+            print("Some error occured, retrying! -", e)
+    time.sleep(1)