1  # SPDX-FileCopyrightText: 2018 Brent Rubell for Adafruit Industries
  2  #
  3  # SPDX-License-Identifier: MIT
  4  
  5  """
  6  'io_home_security.py'
  7  =======================================
  8  Secure and monitor your home with
  9  Adafruit IO.
 10  
 11  Learning System Guide: https://learn.adafruit.com/adafruit-io-home-security
 12  
 13  Author(s): Brent Rubell for Adafruit Industries, 2018.
 14  
 15  Dependencies:
 16      - Adafruit_Blinka
 17          (https://github.com/adafruit/Adafruit_Blinka)
 18      - Adafruit_CircuitPython_SGP30
 19          (https://github.com/adafruit/Adafruit_CircuitPython_SGP30)
 20      - Adafruit_CircuitPython_NeoPixel
 21          (https://github.com/adafruit/Adafruit_CircuitPython_NeoPixel)
 22      - picamera
 23          (https://github.com/waveform80/picamera)
 24  """
 25  # Import standard python modules
 26  import time
 27  import base64
 28  # import Adafruit IO REST client
 29  from Adafruit_IO import Client, RequestError
 30  
 31  # import SGP30, NeoPixel and picam libraries
 32  import neopixel
 33  import adafruit_sgp30
 34  import picamera
 35  
 36  # import Adafruit Blinka
 37  from board import SCL, SDA, D18, D22, D24
 38  from busio import I2C
 39  import digitalio
 40  
 41  # Number of NeoPixels connected to the strip
 42  NUM_PIXELS_STRIP = 60
 43  # Number of NeoPixels connected to the NeoPixel Jewel
 44  NUM_PIXELS_JEWEL = 6
 45  RED = (255, 0, 0)
 46  
 47  # Set to the hour at which to arm the alarm system, 24hr time
 48  ALARM_HOUR = 16
 49  
 50  # Set to the interval between loop execution, in seconds
 51  LOOP_INTERVAL = 2
 52  
 53  # Set to your Adafruit IO key.
 54  # Remember, your key is a secret,
 55  # so make sure not to publish it when you publish this code!
 56  ADAFRUIT_IO_KEY = 'YOUR_IO_KEY'
 57  
 58  # Set to your Adafruit IO username.
 59  # (go to https://accounts.adafruit.com to find your username)
 60  ADAFRUIT_IO_USERNAME = 'YOUR_IO_USERNAME'
 61  
 62  # Create an instance of the REST client
 63  aio = Client(ADAFRUIT_IO_USERNAME, ADAFRUIT_IO_KEY)
 64  
 65  # set up Adafruit IO feeds
 66  tvoc_feed = aio.feeds('tvoc')
 67  eco2_feed = aio.feeds('eco2')
 68  door_feed = aio.feeds('front-door')
 69  motion_feed = aio.feeds('motion-detector')
 70  alarm_feed = aio.feeds('home-alarm')
 71  outdoor_lights_feed = aio.feeds('outdoor-lights')
 72  indoor_lights_Feed = aio.feeds('indoor-lights')
 73  picam_feed = aio.feeds('picam')
 74  
 75  # set up picamera
 76  camera = picamera.PiCamera()
 77  # set the resolution of the pi camera
 78  # note: you can only send images <100kb to feeds
 79  camera.resolution = (200, 200)
 80  
 81  # set up door sensor
 82  door_sensor = digitalio.DigitalInOut(D24)
 83  door_sensor.direction = digitalio.Direction.INPUT
 84  
 85  # set up motion sensor
 86  pir_sensor = digitalio.DigitalInOut(D22)
 87  pir_sensor.direction = digitalio.Direction.INPUT
 88  prev_pir_value = pir_sensor.value
 89  is_pir_activated = False
 90  
 91  # set up sgp30
 92  i2c_bus = I2C(SCL, SDA, frequency=100000)
 93  sgp30 = adafruit_sgp30.Adafruit_SGP30(i2c_bus)
 94  
 95  # set up the neopixel strip
 96  pixels = neopixel.NeoPixel(D18, NUM_PIXELS_STRIP)
 97  pixels.fill((0, 0, 0))
 98  pixels.show()
 99  
100  def alarm_trigger():
101      """Alarm is triggered by the dashboard toggle
102      and a sensor detecting movement.
103      """
104      print('* SYSTEM ALARM!')
105      for j in range(NUM_PIXELS_JEWEL):
106          pixels[j] = RED
107          pixels.show()
108      time.sleep(0.5)
109      # turn pixels off after alarm
110      pixels.fill((0, 0, 0))
111      pixels.show()
112  
113  print('Adafruit IO Home: Security')
114  
115  while True:
116      # read SGP30
117      co2eq, tvoc = sgp30.iaq_measure()
118      print("CO2eq = %d ppm \t TVOC = %d ppb" % (co2eq, tvoc))
119      # send SGP30 values to Adafruit IO
120      aio.send(eco2_feed.key, co2eq)
121      aio.send(tvoc_feed.key, tvoc)
122      time.sleep(0.5)
123  
124      # read/send door sensor
125      if door_sensor.value:
126          print('Door Open!')
127          # change indicator block to red
128          aio.send(door_feed.key, 3)
129      else:
130          print('Door Closed.')
131          # reset indicator block to green
132          aio.send(door_feed.key, 0)
133  
134      # read/send motion sensor
135      if door_sensor.value:
136          if not prev_pir_value:
137              print('Motion detected!')
138              is_pir_activated = True
139              # change indicator block to red
140              aio.send(motion_feed.key, 3)
141      else:
142          if prev_pir_value:
143              print('Motion ended.')
144              is_pir_activated = False
145              # reset indicator block to green
146              aio.send(motion_feed.key, 0)
147  
148      camera.capture('picam.jpg')
149      print('snap!')
150      with open("picam.jpg", "rb") as imageFile:
151          image = base64.b64encode(imageFile.read())
152          send_str = image.decode("utf-8")
153          try:
154              aio.send(picam_feed.key, send_str)
155              print('sent to AIO!')
156          except RequestError:
157              print('Sending camera image failed...')
158  
159      # Alarm System
160      is_alarm = aio.receive(alarm_feed.key)
161  
162      if is_alarm.value == "ON":
163          # sample the current hour
164          cur_time = time.localtime()
165          cur_hour = time.tm_hour
166          if (cur_hour > ALARM_HOUR and is_pir_activated is True):
167              alarm_trigger()
168  
169      prev_pir_value = door_sensor.value
170      time.sleep(LOOP_INTERVAL)