Team Technocrat: Ishmael Ryu

Created January 24, 2018

Complete Alexa Smart Home Package

A smart home model that is controlled by Alexa.

601

Things used in this project

Hardware components

Arduino UNO

Raspberry Pi 3 Model B

Male/Female Jumper Wires

LED (generic)

DHT11 Temperature & Humidity Sensor (4 pins)

PIR Motion Sensor (generic)

Servos (Tower Pro MG996R)

An Arduino Servo Motor

Raspberry Pi Camera Module

Buzzer

Software apps and online services

Arduino IDE

Raspberry Pi Raspbian

Amazon Alexa Alexa Skills Kit

Story

1. Smart Home model controlled by Alexa

This is the smart home model I've built.

I've decided to make this project because I wanted to design a futuristic home which is made more convenient and relaxing for people through technology.

It has amazing skills such as:

living room lights are on

(1) Turning lights on and off

-the four LEDs in the smart home (living room light, kitchen light, bedroom light, bathroom light) can be controlled by saying commands to Alexa. When Alexa hears a command, the Raspberry Pi sends a signal to Arduino via Serial communication and the Arduino activates the LEDs according to the signal. ex) Person: "Alexa, tell smart home living room lights on." Alexa: turns on LED and replies "OK, living room lights are on."

front door connected with servo motor

(2) Opening and closing front door

-opening or closing front door by saying commands to Alexa (or smartphone app if you're outside) . When Alexa hears a command, the Raspberry Pi sends a signal to Arduino via Serial communication and the Arduino activates the servo motor according to the signal.

ex) Person: "Alexa, tell smart home open the door." Alexa: opens the door and replies "OK, the door is opened."

DHT 11 sensor that collects data of temperature and humidity

(3) Checking the temperature and humidity

- checking the temperature and humidity inside the house when saying commands to Alexa. The data of the temperature and humidity is collected by the DHT11 sensor. When Alexa hears a command, the Raspberry Pi sends a signal to Arduino via Serial communication and the Arduino responds by sending the data of the DHT11 sensor to the Raspberry Pi via I2C communication.

ex) Person: "Alexa, tell smart home what is the temperature?" Alexa: "Temperature is 25 celsius."

sends SMS to your phone if an intruder is in yout house while the security systems are activated

uploads a photo of the intruder on Twitter

(4) Security system

-when someone's in your home after you've activated the security system, the PIR sensor detects the intruder and notifies you by sending a message to your phone and uploading a photo of the intruder on Twitter which was taken by the Picamera module. ex) Person: "Alexa, tell smart home security on." Alexa: "OK, security systems are on." then if someone's in your home smart home sends text message to your phone and uploads a photo of the intruder on Twitter.

smart home calling your phone

(5) Finding your phone

-if your phone's somewhere inside your house but you can't find it, you can activate this Alexa skill which makes the Raspberry Pi call your phone with Plivo API, thus enabling yourself to locate your phone by the sound. ex) Person: "Alexa, tell smart home where is your phone?" Alexa: calls your phone and replies "Here is your phone."

(6) Emergency

-during emergencies such as having a heart attack, you can call 911 by saying a simple command to Alexa. This is also accomplished through Plivo API. ex) Person: "Alexa, tell smart home help!"

Alexa: calls 911 and replies "Calling 911."

(7) SNS X Smart Home

-when you're turning the lights on, opening the door, or asking what the temperature is, smart home uploads your requests on Twitter. That way, you can always know what's going inside your house and whether the lights are on. This is accomplished through Twitter API.

2. Building Smart Home

(1) install the neccessary libraries on Raspberry Pi

open the terminal on your Raspberry Pi and enter the following commands in order to install the neccessary python libraries

- pip3 install flask - pip3 install flask-ask -sudo apt-get install pyserial -sudo pip3 install twython - pip3 install plivo -sudo apt-get install python3-smbus

what your Python Shell looks like after you run your code on Raspberry Pi

(2) Write the Python code on Raspberry Pi

open Python 3 IDLE in Raspberry Pi and write the code posted below. Connect the Raspberry Pi with the Arduino with a USB cable. Don't run the code yet, but after you run the code, the Python Shell should look like this.

running Ngrok on terminal

(3) Run Ngrok

https://ngrok.com/ Go to this website and dowload the zip file on your Raspberry Pi. Unzip the file and go to the directory where the file is on your terminal. Run the following command - ./ngrok http 5000

copy the url (in this case, it's https://4426556f.ngrok.io )

(4) Alexa Skills Kit

https://developer.amazon.com/alexa-skills-kit Go to this website and log in using your Amazon account (if you don't have one, you gotta make one) . Click 'start skill'.

Skill Information in Alexa Skills Kit

In Skill Information, enter the neccessary information as the picture above. *Invocation Name is the phrase that activates the skill *. Click 'save' below and move on to Interaction Model.

Interaction Model in Alexa Skills Kit

In Interaction Model, click 'ADD+' button next to the 'Intents'. Name the intent and type in the sample utterance. The following are the intents I've created and their sample utterances.

LivingRoomIntent - living room lights on , LivingRoomOffIntent - living room lights off , KitchenIntent - kitchen lights on , KitchenOffIntent - kitchen lights off , BedRoomIntent - bedroom lights on , BedRoomOffIntent - bedroom lights off , BathRoomIntent - bathroom room lights on , BathRoomIntent - living room lights on , OpenDoorIntent - open the door , CloseDoorIntent - close the door , SecurityOnIntent - security on , SecurityOffIntent - security off , TemperatureIntent - what is the temperature , HumidityIntent - what is the humidity , HelpIntent - help , WhereIsMyPhoneIntent - where is my phone

After you're done, click 'Save Model' and 'Build Model' above. Then move on to Configuration.

Configuration in Alexa Skills Kit

In Configuration, select HTTPS as service endpoint type and paste the Ngrok url ou copied earlier in Default. Do everything as the picture above, save it , and move on to SSL Certificate.

SSL Certificate in Amazon Skills Kit

In SSl Certificate, do as the picture above and then save it. This is all you need to do in Alexa Skills Kit.

If you want to learn more about Alexa Skills Kit, visit codecademy.

(5) Arduino

Smart Home model with Arduino

Connect the sensors and LEDs to the Arduio as the schematics below. Then upload the Arduino IDE code (which is also written below) to the Arduino UNO board. Connect the Arduino and Raspberry Pi with a USB cable and several wires to enable Serial communication and I2C communication. Also, don't forget to connect the Pi camera module to the Raspberry Pi.

Twitter apps

(6) Twitter API

https://apps.twitter.com/ Go to this website and click on 'Create New App'. (You gotta have aTwitter account to o this. If you don't have one, make one.) After you've created a new app, copy the Consumer Key, Consumer Secret, Access Token, Access Token Secret and paste it in the Python auth3.py code below.

(7) Plivo API

https://www.plivo.com/ Go to this website, create an account , then copy the auth_id and auth_token, and paste them on the Python 3 (IDLE) code.

(8) Finish!

Run the code and you're all set!

Schematics

Code

from flask import Flask, render_template

from flask_ask import Ask,statement

import smbus

import serial

from picamera import PiCamera

import time

import plivo, plivoxml

from ubidots import ApiClient

from twython import Twython

from auth3 import (

    consumer_key,

    consumer_secret,

    access_token,

    access_token_secret

    )

twitter = Twython(

    consumer_key,

    consumer_secret,

    access_token,

    access_token_secret

    )

 

api = ApiClient(token = "A1E-esutDEn2fFKzH7cIAJ31kLn9agQsoP")

ubi_pir = api.get_variable("5a572831c03f9731148ff03e")

 

bus = smbus.SMBus(1)

address = 0x04

 

ser = serial.Serial("/dev/ttyACM0", 9600)

 

 

app = Flask(__name__)

ask = Ask(app, '/')

 

@app.route('/')

def page():

    return " welcome to Smart Home"

 

@ask.launch

def start():

    return statement("Hello,welcome to smart home.")

 

@ask.intent("LivingRoomIntent")

def living_room_lights_on():

    bus.write_byte(address,97)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message ="%s living room lights are on." % (f)

    twitter.update_status(status=message)

    return statement("OK, living room lights are on.")

 

 

@ask.intent("LivingRoomOffIntent")

def living_room_lights_off():

    bus.write_byte(address,65)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message ="%s living room lights are off." % (f)

    twitter.update_status(status=message)

    return statement("OK, living room lights are off.")

 

 

@ask.intent("KitchenIntent")

def kitchen_lights_on():

    bus.write_byte(address,98)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message ="%s kitchen lights are on." % (f)

    twitter.update_status(status=message)

    return statement("OK, kitchen lights are on.")

 

@ask.intent("KitchenOffIntent")

def kitchen_lights_off():

    bus.write_byte(address,66)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message ="%s kitchen lights are off." % (f)

    twitter.update_status(status=message)

    return statement("OK, kitchen lights are off.")

 

@ask.intent("BedroomIntent")

def bedroom_lights_on():

    bus.write_byte(address,99)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message ="%s bedroom lights are on." % (f)

    twitter.update_status(status=message)

    return statement("OK, bedroom lights are on.")

 

@ask.intent("BedroomOffIntent")

def bedroom_lights_off():

    bus.write_byte(address,67)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message ="%s bedroom lights are off." % (f)

    twitter.update_status(status=message)

    return statement("OK, bedroom lights are off.")

 

@ask.intent("BathroomIntent")

def bathroom_lights_on():

    bus.write_byte(address,100)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message ="%s bathroom lights are on." % (f)

    twitter.update_status(status=message)

    return statement("OK, bathroom lights are on.")

 

@ask.intent("BathroomOffIntent")

def bathroom_lights_off():

    bus.write_byte(address,68)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message ="%s bathroom lights are on." % (f)

    twitter.update_status(status=message)

    return statement("OK, bathroom lights are off.")

 

@ask.intent("HumidityIntent")

def what_is_the_humidity():

    bus.write_byte(address,101)

    time.sleep(1)

    data = ser.readline()

    h = str(data,'utf-8')

    hum_text = "humidity is %s percent." % (h)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message = '%s %s'%(f,hum_text)

    twitter.update_status(status=message)

    return statement(hum_text)

 

@ask.intent("TemperatureIntent")

def what_is_the_temperature():

    bus.write_byte(address,102)

    time.sleep(1)

    data = ser.readline()

    t = str(data,'utf-8')

    temp_text = "temperature is %s celsius ." % (t)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message = '%s %s'%(f,temp_text)

    twitter.update_status(status=message)

    return statement(temp_text)

 

@ask.intent("SecurityOnIntent")

def security_on():

    bus.write_byte(address,103)

    data = ser.readline()

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message = '%s INTRUDER'%(f)

    if (data ==b'h\r\n'):

        ubi_pir.save_value({'value':1})

        time.sleep(2)

        ubi_pir.save_value({'value':0})

        camera = PiCamera()

        camera.capture('/home/pi/Desktop/intruder.jpg')

        

        with open('/home/pi/Desktop/intruder.jpg','rb') as photo:

            twitter.update_status_with_media(status=message, media=photo)

    return statement("OK, security systems are on.")  

 

@ask.intent("SecurityOffIntent")

def security_off_intent():

    bus.write_byte(address,71)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message = '%s security systems are off.'%(f)

    twitter.update_status(status=message)

    return statement("OK,security systems are off.")

 

@ask.intent("OpenDoorIntent")

def open_the_door():

    bus.write_byte(address, 105)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message = '%s door is opened.'%(f)

    twitter.update_status(status=message)

    return statement("OK,the door is opened.")

 

@ask.intent("CloseDoorIntent")

def close_the_door():

    bus.write_byte(address, 106)

    i = time.asctime( time.localtime(time.time()) )

    f=str(i)

    message = '%s door is closed.'%(f)

    twitter.update_status(status=message)

    return statement("OK,the door is closed.")

 

@ask.intent("WhereIsMyPhoneIntent")

def where_is_my_phone():

    auth_id = "Your auth_id"

    auth_token = "Your auth_token"

 

    p = plivo.RestAPI(auth_id, auth_token)

 

    params = {

        'to': 'Your phone number',    # The phone numer to which the call will be placed

        'from' : 'any phone number', # The phone number to be used as the caller id

 

        # answer_url is the URL invoked by Plivo when the outbound call is answered

        # and contains instructions telling Plivo what to do with the call

        'answer_url' : "https://s3.amazonaws.com/static.plivo.com/answer.xml",

        'answer_method' : "GET", # The method used to call the answer_url

 

        # Example for asynchronous request

        # callback_url is the URL to which the API response is sent.

        #'callback_url' => "http://myvoiceapp.com/callback/",

        #'callback_method' => "GET" # The method used to notify the callback_url.

    }

 

    # Make an outbound call and print the response

    response = p.make_call(params)

    return statement("Here is your phone.")

 

@ask.intent("HelpIntent")

def help():

    auth_id = "Your auth_id"

    auth_token = "Your auth_token"

 

    p = plivo.RestAPI(auth_id, auth_token)

 

    params = {

        'to': '911',    # The phone numer to which the call will be placed

        'from' : 'Your phone number', # The phone number to be used as the caller id

 

        # answer_url is the URL invoked by Plivo when the outbound call is answered

        # and contains instructions telling Plivo what to do with the call

        'answer_url' : "https://s3.amazonaws.com/static.plivo.com/answer.xml",

        'answer_method' : "GET", # The method used to call the answer_url

 

        # Example for asynchronous request

        # callback_url is the URL to which the API response is sent.

        #'callback_url' => "http://myvoiceapp.com/callback/",

        #'callback_method' => "GET" # The method used to notify the callback_url.

    }

 

    # Make an outbound call and print the response

    response = p.make_call(params)

    return statement("Calling 911")

 

 

if __name__=='__main__':

    app.run(debug = True);

#include <Wire.h>
#define my_i2c_addr 0x04

#include <Servo.h> // servo library 
Servo myservo; // servo name

#include "DHT.h"

#define DHTPIN 13    // what digital pin we're connected to
int pirPin = 7;

#define DHTTYPE DHT11   // DHT 11

DHT dht(DHTPIN, DHTTYPE);

void setup()
{
 Wire.begin(my_i2c_addr);
 Wire.onReceive(loop);
  
  myservo.attach(9); // attach servo signal wire to pin 9
  //Setup usb serial connection to computer
  Serial.begin(9600);

  //Setup Bluetooth serial connection to android
  //bluetooth.begin(9600);
  pinMode(12,OUTPUT);
  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(pirPin, INPUT);
  //Serial.println("DHTxx test!");

  dht.begin();
  
}

void loop()
{
 
  
   int servopos = Wire.read();//input from raspbery pi through I2C

  
    if(servopos=='i')//opening the door
    {
      myservo.write(0);
      tone(12,261,500);
      delay(100);
      tone(12,330,500);
      delay(100);
      tone(12,392,500);
      delay(1000);
      
    }
    if(servopos=='j')//closing the door
    {
      myservo.write(180);
     tone(12,392,500);
      delay(100);
      tone(12,330,500);
      delay(100);
      tone(12,261,500);
      delay(1000);
    }

   
    if(servopos== 'a')//led 1 on
    {
      digitalWrite(2,HIGH);
    }
    if(servopos=='b')//led 2 on
    {
      digitalWrite(3,HIGH);
    }
    if(servopos=='c')//led 3 on
    {
      digitalWrite(4,HIGH);
    }
    if(servopos=='d')//led 1 on
    {
      digitalWrite(5,HIGH);
    }
       if(servopos=='A')//led 1 off
    {
      digitalWrite(2,LOW);
    }
       if(servopos=='B')//led 2 off
    {
      digitalWrite(3,LOW);
    }
       if(servopos=='C')//led 3 off
    {
      digitalWrite(4,LOW);
    }
       if(servopos=='D')//led 1 off
    {
      digitalWrite(5,LOW);
    }


 
 int t = dht.readTemperature();
  
  
 int h = dht.readHumidity();

 
 if(servopos == 'e'){ //print humidity to raspberry pi
  Serial.println(h);
 }
  
  if(servopos == 'f'){ //print temperature to raspberry pi
  Serial.println(t);
  }

int  pir = digitalRead(pirPin);
 if(servopos == 'g'){//activte pir senor
  
  if (servopos == 'G'){//deactivate pir sensor
  pir = 0;
 }
 if (pir>0){
  Serial.println("h");
  delay(500);
 }
} 


 
}

Credits

Ishmael Ryu

1 project • 1 follower

Complete Alexa Smart Home Package

Things used in this project

Hardware components

Software apps and online services

Story

Custom parts and enclosures

Smart Home Drawing

Schematics

Smart Home Schematics

Code

Raspberry Pi Python 3 (IDLE)

Raspberry Pi Python 3 (IDLE) auth3

Arduino IDE

Credits

Ishmael Ryu

Comments

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Complete Alexa Smart Home Package

Complete Alexa Smart Home Package

Things used in this project

Hardware components

Software apps and online services

Story

Custom parts and enclosures

Smart Home Drawing

Schematics

Smart Home Schematics

Code

Raspberry Pi Python 3 (IDLE)

Raspberry Pi Python 3 (IDLE) auth3

Arduino IDE

Credits

Ishmael Ryu

Comments