1  # SPDX-FileCopyrightText: 2021 Brent Rubell for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  """
 6  'temperature_alarm.py'.
 7  
 8  =================================================
 9  sounds an alarm when the temperature crosses a threshold
10  requires:
11  - simpleio
12  """
13  
14  import time
15  import analogio
16  import board
17  from simpleio import map_range, tone
18  
19  tmp_36 = analogio.AnalogIn(board.A0)
20  
21  freeze_temp = 0
22  boil_temp = 100
23  
24  while True:
25      temp = map_range(tmp_36.value, 0, 65535, 0, 5)
26      # temp to degrees C
27      temp = (temp - 0.5) * 100
28      print(temp)
29  
30      if temp < freeze_temp:
31          tone(board.D8, 349, 4)
32      if temp > boil_temp:
33          tone(board.D8, 523, 4)
34      time.sleep(0.5)