Temp and Humidity Sensor for the Adafruit Clue

code.py

"""Monitor customisable temperature and humidity ranges, with an optional audible alarm tone."""
# Modification to allow changing between degrees Fahrenheit and Celsius
# Original source:
# https://github.com/adafruit/Adafruit_CircuitPython_CLUE/blob/master/examples/clue_temperature_humidity_monitor.py

from adafruit_clue import clue
from time import sleep

# Set desired temperature range in degrees Celsius.
min_temperature = 24
max_temperature = 30

# Set desired humidity range in percent.
min_humidity = 20
max_humidity = 65

# Set to true to enable audible alarm tone.
alarm_enable = False

# Default temperature scale
temp_scale = ["c", "f"]

clue_display = clue.simple_text_display(text_scale=3, colors=(clue.WHITE,))

allow_user_input = True

while True:

    if alarm_enable:
        clue_display[0].text = "   Temp &   *"
    else:
        clue_display[0].text = "   Temp &    "

    clue_display[1].text = "  Humidity   "

    alarm = False

    temperature_c = clue.temperature
    temperature_f = (clue.temperature * 9 / 5) + 32
    humidity = clue.humidity

    click = clue.were_pressed
    if allow_user_input and click:
        allow_user_input = False

        if 'A' in click:
            print("Button A detected")
            # toggle temperature scale from C to F / F to C
            temp_scale[0], temp_scale[1] = temp_scale[1], temp_scale[0]

        if 'B' in click:
            print("Button B detected")
            # toggle alarm_enable
            alarm_enable = not alarm_enable

    if temp_scale[0] == "f":
        clue_display[3].text = "Temp: {:.1f} F".format(temperature_f)
    else:
        clue_display[3].text = "Temp: {:.1f} C".format(temperature_c)

    clue_display[5].text = "Humi: {:.1f} %".format(humidity)

    if temperature_c < min_temperature:
        clue_display[3].color = clue.BLUE
        alarm = True
    elif temperature_c > max_temperature:
        clue_display[3].color = clue.RED
        alarm = True
    else:
        clue_display[3].color = clue.WHITE

    if humidity < min_humidity:
        clue_display[5].color = clue.BLUE
        alarm = True
    elif humidity > max_humidity:
        clue_display[5].color = clue.RED
        alarm = True
    else:
        clue_display[5].color = clue.WHITE
    clue_display.show()

    if alarm and alarm_enable:
        clue.start_tone(2000)
    else:
        clue.stop_tone()

    if not allow_user_input:
        if clue.button_a or clue.button_b:
            print("lay off the buttons!")
        else:
            print("no buttons detected")
            discard = clue.were_pressed
            allow_user_input = True