IO Home #1: Temperature and Humidity

IO_House_Series/Lights_and_Temp/io_house_light_temp.py

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+"""
+'io_house_light_temp.py'
+=======================================
+Control lights and monitor temperature
+and humidity in a model smart house.
+
+Learning System Guide: https://learn.adafruit.com/adafruit-io-house-lights-and-temperature
+
+Author(s): Brent Rubell for Adafruit Industries, 2018.
+
+Dependencies:
+    - Adafruit_Blinka
+        (https://github.com/adafruit/Adafruit_Blinka)
+    - Adafruit_CircuitPython_SI7021
+        (https://github.com/adafruit/Adafruit_CircuitPython_SI7021)
+    - RPi WS281x Python
+        (https://github.com/rpi-ws281x/)
+"""
+# Import standard python modules
+import time
+
+# import Adafruit IO REST client
+from Adafruit_IO import Client, Feed, RequestError
+
+# import Adafruit Blinka
+from busio import I2C
+from board import SCL, SDA
+
+# import Adafruit_CircuitPython_Si7021 Library
+import adafruit_si7021
+
+# import neopixel library
+import neopixel
+
+# while True loop delay, in seconds
+DELAY_TIME = 5
+
+# LED strip configuration:
+STRIP_LED_COUNT = 34      # Number of LED pixels on the NeoPixel Strip
+JEWEL_PIXEL_COUNT = 7       # Number of LED pixels on the NeoPixel Jewel
+LED_PIN = 18      # GPIO pin connected to the pixels (18 uses PWM!).
+LED_FREQ_HZ = 800000  # LED signal frequency in hertz (usually 800khz)
+LED_DMA = 10      # DMA channel to use for generating signal (try 10)
+LED_BRIGHTNESS = 255     # Set to 0 for darkest and 255 for brightest
+LED_INVERT = False   # True to invert the signal (when using NPN transistor level shift)
+LED_CHANNEL = 0       # set to '1' for GPIOs 13, 19, 41, 45 or 53
+
+# Create NeoPixel object with appropriate configuration.
+strip = neopixel.Adafruit_NeoPixel(STRIP_LED_COUNT, LED_PIN, LED_FREQ_HZ,
+                                   LED_DMA, LED_INVERT, LED_BRIGHTNESS, LED_CHANNEL)
+# Intialize the library (must be called once before other functions).
+strip.begin()
+
+# Set to your Adafruit IO key.
+# Remember, your key is a secret,
+# so make sure not to publish it when you publish this code!
+ADAFRUIT_IO_KEY = 'YOUR_IO_KEY'
+
+# Set to your Adafruit IO username.
+# (go to https://accounts.adafruit.com to find your username)
+ADAFRUIT_IO_USERNAME = 'YOUR_IO_USERNAME'
+
+# Create an instance of the REST client
+aio = Client(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)
+
+# set up Adafruit IO feeds
+try:
+    temperature = aio.feeds('temperature')
+    humidity = aio.feeds('humidity')
+    outdoor_lights = aio.feeds('outdoor-lights')
+    indoor_lights = aio.feeds('indoor-lights')
+except RequestError:
+    temperature = aio.create_feed(Feed(name='temperature'))
+    humidity = aio.create_feed(Feed(name='humidity'))
+    outdoor_lights = aio.create_feed(Feed(name='outdoor-lights'))
+    indoor_lights = aio.create_feed(Feed(name='indoor-lights'))
+
+# create an i2c interface object
+i2c = I2C(SCL, SDA)
+
+# instanciate the sensor object
+sensor = adafruit_si7021.SI7021(i2c)
+
+print('Adafruit IO Home: Lights and Climate Control')
+
+while True:
+    # get data from the si7021 sensor
+    temperature_data = sensor.temperature
+    humidity_data = sensor.relative_humidity
+
+    # send data to adafruit io
+    print('> Temperature: ', int((temperature_data * 1.8)+32))
+    aio.send(temperature.key, int(temperature_data * 1.8)+32)
+    print('> Humidity :', int(humidity_data))
+    aio.send(temperature.key, int(humidity_data))
+
+    # get the indoor light color picker feed
+    indoor_light_data = aio.receive(indoor_lights.key)
+    print('< Indoor Light HEX: ', indoor_light_data.value)
+    # convert the hex values to RGB values
+    red = aio.toRed(indoor_light_data.value)
+    green = aio.toGreen(indoor_light_data.value)
+    blue = aio.toBlue(indoor_light_data.value)
+
+    # set the jewel's color
+    for i in range(JEWEL_PIXEL_COUNT):
+        strip.setPixelColorRGB(i, green, red, blue)
+        strip.show()
+
+    # get the outdoor light color picker feed
+    outdoor_light_data = aio.receive(outdoor_lights.key)
+    print('< Outdoor Light HEX: ', outdoor_light_data.value)
+
+    # convert the hex values to RGB values
+    red = aio.toRed(outdoor_light_data.value)
+    green = aio.toGreen(outdoor_light_data.value)
+    blue = aio.toBlue(outdoor_light_data.value)
+
+    # set the strip color
+    for j in range(JEWEL_PIXEL_COUNT, STRIP_LED_COUNT + JEWEL_PIXEL_COUNT):
+        strip.setPixelColorRGB(j, green, red, blue)
+        strip.show()
+
+    # delay the loop to avoid timeout from Adafruit IO.
+    time.sleep(DELAY_TIME)