1  # SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: Unlicense
 4  import time
 5  import board
 6  from adafruit_magtag.magtag import MagTag
 7  import neopixel
 8  
 9  external_pixels = neopixel.NeoPixel(board.D10, 30, brightness=0.3)
10  
11  # Set up where we'll be fetching data from
12  DATA_SOURCE = "http://api.thingspeak.com/channels/1417/field/2/last.json"
13  COLOR_LOCATION = ['field2']
14  DATE_LOCATION = ['created_at']
15  
16  magtag = MagTag(
17      url=DATA_SOURCE,
18      json_path=(COLOR_LOCATION, DATE_LOCATION),
19  )
20  magtag.network.connect()
21  
22  # Color
23  magtag.add_text(
24      text_font="Arial-Bold-12.bdf",
25      text_position=(10, 15),
26      text_transform=lambda x: "New Color {}".format(x),
27  )
28  # datestamp
29  magtag.add_text(
30      text_font="Arial-Bold-12.bdf",
31      text_position=(10, 35),
32      text_transform=lambda x: "Updated on: {}".format(x),
33  )
34  
35  timestamp = None
36  while True:
37      if not timestamp or ((time.monotonic() - timestamp) > 10):  # once every 10 seconds...
38          try:
39              value = magtag.fetch()
40              print("Response is", value)
41              magtag.peripherals.neopixel_disable = False
42              color = int(value[0][1:], 16)
43              magtag.peripherals.neopixels.fill(color)
44              external_pixels.fill(color)
45              timestamp = time.monotonic()
46          except (ValueError, RuntimeError, ConnectionError, OSError) as e:
47              print("Some error occured, retrying! -", e)
48      time.sleep(1)