Introduction
Step 1: Connect Google Assistant and Bolt Cloud via IFTTT
Step2: Create your own ubuntu Virtual Private Server using any of the cloud computing platforms
Step 3: Twilio account and python code
Step 4: Arduino Code
Working

Published July 30, 2020 © GPL3+

SMART GARAGE USING BOLT IoT AND ARDUINO

Smart Garage lets you Open and Close the door of your garage using Google Assistant. Also equipped with smart lighting and parking assistant

IntermediateFull instructions provided3 hours6,612

Things used in this project

Hardware components

Arduino UNO Wifi Rev.2

Bolt IoT Bolt WiFi Module

Ultrasonic Sensor - HC-SR04 (Generic)

L293D motor driver module

Buzzer

LED (generic)

DC Motor, 12 V

9V battery (generic)

Breadboard (generic)

Jumper wires (generic)

Software apps and online services

Twilio SMS Messaging API

Story

Introduction:

With the fast-moving world and everything moving towards automation, smart devices are at most demand. Smart Garage is one such device which will make the life of the user easy. It will also ensure the safety of the garage by sending SMS alerts. Open and close the garage using your google assistant and get a SMS alert message every time you do so. Also equipped with a smart lighting system which remains ON till the garage door is open. The parking assistant lets the user park their vehicle without any hassle. All in all, this user-friendly smart garage will help the user lead a comfortable life.

Step 1: Connect Google Assistant and Bolt Cloud via IFTTT

Create an account on IFTTT.
Click on create button --> +This button --> Search for Google Assistant --> Choose Trigger : Say a simple phrase --> Fill in the details and click on Create Trigger --> Click on +That button --> Search for Webhooks --> Choose Action: Makea web request --> Fill in the details - URL: https://cloud.boltiot.com/remote/API_KEY/digitalWrite?pin=0&state=HIGH&deviceName=DEVICE_ID (Please replace API_KEY and DEVICE_ID with your API Key and Device ID. You will find it on bolt cloud) --> Create Action --> Review and Finish.
Now repeat the same process for Closing the Garage. In the URL change state=LOW (https://cloud.boltiot.com/remote/API_KEY/digitalWrite?pin=0&state=LOW&deviceName=DEVICE_ID)
Your Bolt cloud is now linked to your Google Assistant. Make sure you are using the same mail ID. You can check for the functionality by simply connecting a LED to pin 0 of the Bolt Wi-Fi module.

You can add any phrase in the place of Open Garage

Don't forget to enter your API Key and Device ID

Step2: Create your own ubuntu Virtual Private Server using any of the cloud computing platforms

Any cloud computing platform can be used for this. I have used AWS.

Create an account on AWS.
After verification of your account, create an EC2 Instance. Choose only free tier eligible products to avoid billing.
Click on Launch Instance --> Choose Ubuntu Server 16.04 LTS (HVM) --> Choose t2.micro--> Review and Launch --> Launch --> Choose Create a new key pair and enter the key pair name of your choice --> Download Key Pair (.pem file)--> Launch Instance
To convert.pem file to.ppk file download puttygen software.
Use putty software to login into your ubuntu machine. Enter the IP address of your Ubuntu machine --> click on "+" sign next to SSH --> click on AUTH --> browse and add the key pair that you had downloaded while launching your instance --> click on Open
login as - ubuntu
After logging into your cloud server, download the latest Python libraries and the Bolt Python libraries as you will use it for writing your code. sudo apt-get -y update sudo apt install python3-pip sudo pip3 install boltiot

Don't forget to download the key pair

Step 3: Twilio account and python code

Create an account on Twilio and note down the SID, Auth Token and the phone number generated.
Create a file named conf.py which will store all the credentials related to Twilio. To create a new file type sudo nano conf.py in the terminal. After that write below code to save all the credentials in a single file. SID = 'You can find SID in your Twilio Dashboard' AUTH_TOKEN = 'You can find on your Twilio Dashboard' FROM_NUMBER = 'This is the no. generated by Twilio. You can find this on your Twilio Dashboard'TO_NUMBER = 'This is your number. Make sure you are adding +91 in beginning'API_KEY = 'This is your Bolt Cloud accout API key'DEVICE_ID = 'This is the ID of your Bolt device' press ctrl+x then y to save the file.
Now create one more file named garage.py and type the code given in the attachment below.

Step 4: Arduino Code

Download Arduino IDE and install it on your laptop.
Type the code given in the attachment below.
Do the circuit connections as given in the circuit diagram.

Your smart garage is ready to serve you.

Working:

Say "ok google, open garage" and the garage door will be opened for you and an SMS will be sent to your phone saying that you have opened the garage door. When the garage is open, Smart Lighting System turns ON the lights automatically and the Parking Assistant will blow the buzzer when you are too close to the wall. Say "ok google, close garage" and the garage door will be closed and the Smart Lighting System and Parking Assistant will be turned OFF for you. An SMS will also be sent to your phone saying that you have closed the garage door.

Convert the rotary motion of the motor to linear motion of the garage door and Smart Garage is ready to serve you

Code

#import conf file which contains bolt API key, bolt device ID, Twilio SID, Twilio AUTH token, TO number and FROM number

import conf,json,time
from boltiot import Bolt,Sms
mybolt = Bolt(conf.API_KEY,conf.DEVICE_ID)
sms = Sms(conf.SID,conf.AUTH_TOKEN,conf.TO_NUMBER,conf.FROM_NUMBER)

old_state = 0     #variable to save previous state information initialized to 0

while True:
   print("Reading value from Bolt")
   response = mybolt.digitalRead('1')
   data = json.loads(response)
   print (data)
   new_state = int(data['value'])   #retrieving new_state from the data
   if old_state != new_state:   #checking for change in state
   #Change in state indicates that the garage door is openend or closed
      try:
         if new_state == 1:    #value of new_state is 1 implies that garage door is open
            print("Making request to twilio to send SMS")   #sending an SMS to the TO NUMBER
            response = sms.send_sms("Garage is open")
            print ("Response received from twilio is:"+str(response))
            print ("Status of SMS at Twilio is :"+str(response.status))

         elif new_state == 0:     #value of new_state is 0 implies that garage door is closed
            print("Making request to twilio to send SMS")   #sending an sms to the TO NUMBER
            response = sms.send_sms("Garage is closed")
            print ("Response received from twilio is:"+str(response))
            print ("Status of SMS at Twilio is :"+str(response.status))

      except Exception as e:
         print("Error occured: Below are the details")
         print (e)
   old_state = new_state   #assign new_state value to the old_state for the next cycle
   time.sleep(20)     #wait for 20 seconds

#include <Ultrasonic.h>    //Ultrasonic Simple - Prints the distance read by an ultrasonic sensor in centimeters
Ultrasonic ultrasonic(8,9);   //Pass as a parameter the trigger and echo pin
int bolt = 2;     //Reads the status of the pin connected to the bolt module
int enable = 3;   //Enable pin of LM293D motor driver
int in1 = 4;      //input pin 1 and 2 of LM293D motor driver
int in2 = 5;
int buz = 6;     // connected to the buzzer
int old_state = 0;    //variable to hold the previous state value of the pin connected to bolt. It is initialized to 0. Change in state indicates that the garage door is opened or closed.
int new_state;        // variable to hold the new state value
int distance;         // holds the distance between the vehicle and the garage wall
void setup() 
{
  //set bolt pin as input, motor pins as output, buzzer pin as output
  pinMode(bolt,INPUT);       
  pinMode(enable, OUTPUT);
  pinMode(in1, OUTPUT);
  pinMode(in2, OUTPUT);
  pinMode(buz, OUTPUT);
  //start serial communication with a baud rate of 9600
  Serial.begin(9600);
  //keep the motor off initially
  digitalWrite(in1,LOW);
  digitalWrite(in2,LOW);
}

void loop() 
{
  new_state = digitalRead(bolt);    //read the new state value from the pin conncted to bolt wifi module
  if (new_state != old_state)       //checking for change in state
  {
    if (new_state == 0)             //new state value is 0 indicates that the garage door should be closed
    {
      digitalWrite(buz,LOW);        //buzzer need not be ON when the garage is closed
      Serial.println("Closing Garage");   
      analogWrite(enable,255);     //rotate the motor in order to close the garage door
      digitalWrite(in1,HIGH);
      digitalWrite(in2,LOW);
      delay(4000);
      digitalWrite(in1,LOW);
      digitalWrite(in2,LOW);
      Serial.println("Garage Closed");
     }
     else if(new_state == 1)
     {
      Serial.println("Opening Garage");
      analogWrite(enable,255);     //rotate the motor in opposite direction to open the garage door
      digitalWrite(in1,LOW);
      digitalWrite(in2,HIGH);
      delay(4000);
      digitalWrite(in1,LOW);
      digitalWrite(in2,LOW);
      Serial.println("Garage Opened");
      }
  }
  old_state = new_state;      //assign new state value to old state for the next cycle of the loop
  if (new_state == 1)         //checking if the garage door is open
  {
    //trigger the ultrasonic sensor if the garage door is open
    distance = ultrasonic.read();
    Serial.print("Distance in CM: ");
    Serial.println(distance);
    if (distance < 30)   
    {
      Serial.println("STOP!");   
      digitalWrite(buz,HIGH);    //if the distance between the vehicle and garage wall is less than 30cms turn ON the buzzer
    }
    else
    {
      digitalWrite(buz,LOW);  
    }
    
  }
  
  delay(5000);    //repeat for every 5 seconds (5000ms)
}

Credits

Nidhishree

1 project • 3 followers

SMART GARAGE USING BOLT IoT AND ARDUINO