1  # SPDX-FileCopyrightText: 2019 Anne Barela for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  # Gemma M0 Onchip Temperature Sensor
 6  # Project by Kathy Ceceri
 7  # CircuitPython by Anne Barela
 8  # Adafruit Industries, 2019
 9  
10  import time
11  import board
12  import microcontroller
13  import neopixel
14  import adafruit_dotstar
15  
16  ROOM_TEMP = 65.0  # Set this to the temp to change from blue to red (F)
17  
18  # Set up NeoPixel strand
19  pixels = neopixel.NeoPixel(board.D1,  # NeoPixels on pin D1
20                             4,         # Number of Pixels
21                             brightness=0.2)   # Change from 0.0 to 1.0
22  
23  # For the Gemma M0 onboard DotStar LED
24  dotstar = adafruit_dotstar.DotStar(board.APA102_SCK, board.APA102_MOSI, 1)
25  
26  def deg_f(deg_c):  # Convert Celcius to Fahrenheit
27      return(deg_c * 9 / 5) + 32.0
28  
29  while True:
30      temp = deg_f(microcontroller.cpu.temperature)
31      if temp > ROOM_TEMP:
32          pixels.fill((255, 0, 0))   # (255,0,0) is red
33          dotstar.fill((255, 0, 0))  # Set to red
34      else:
35          pixels.fill((0, 0, 255))   # (0,0,255) is blue
36          dotstar.fill((0, 0, 255))  # Set to blue
37  
38      time.sleep(1.0)  # Wait 1 second