Published March 1, 2019 © GPL3+

Street Light On and Off Over Internet

When the light intensity goes down, this device sends a notification to the municipality to turn on street lights.

IntermediateFull instructions provided2 hours2,634

Things used in this project

Hardware components

Bolt IoT Bolt WiFi Module

Awesome WiFI Module by BOLT IOT

LED (generic)

A light-emitting diode is a semiconductor light source that emits light when current flows through it

Resistor 10k ohm

Resistor 330 ohm

Light Dependent Resistor (LDR)

Light Dependent Resistors (LDR), are light sensitive devices most often used to indicate the presence or absence of light or to measure the light intensity.

Software apps and online services

Bolt IoT Bolt Cloud

Bolt Cloud platform for connecting and managing Bolt IoT devices

Bolt IoT Android App

Link your Bolt devices to your Bolt Cloud account.

Twilio SMS Messaging API

Cloud communications platform for building SMS, Voice & Messaging applications

Oracle VM Virtual Box or Digital Ocean

Story

This project is about making Smart System using Bolt IOT kit which will send the notification via SMS itself to the Municipal Corporation when the intensity of light of Streets decreases, So they will easily and fastly turn ON/OFF the lights of the Streets with the help of Smartphone.

Video of the project:

Street Light ON/OFF via Smartphone using Bolt IOT

Building the Project

For Setting the Bolt WiFi Module click on link https://docs.boltiot.com/docs.

Step 1: Connecting the LDR Circuit to the Bolt

Insert one lead of the LDR into the Bolt Module's 3v3 Pin. Insert one lead of the LDR into the Bolt Module's 3v3 Pin.

Insert other lead of the LDR into the A0 pin

Insert one leg of the 10k Ohm resistor into the GND pin

Insert the other leg of the resistor also into the A0 pin

Step 2: Connecting the LED to the Bolt

Here we are using the LED instead of LED Bulb as the demo

Take one leg of the resistor and wrap it around the longer leg of the LED i.e positive leg. This resistor helps limit the current flowing through the LED and protects the LED and the Bolt from short circuits.

Insert the negative leg of the LED into the ground pin of the Bolt.

Insert the other leg of the resistor in digital pin 0 of the Bolt.

Finally the combination of both

Final Circuit

Step 3: Configuration of Product

To create a Product for this project, firstly login into BOLT CLOUD

Click on the Products tab and then create a product
select the Output Devices option
Click on Configure this product to configure the product
Click on Code Section and write the code in HTML We are writing the HTML code for Switching The Street Lights ON and OFF with the Smartphone (via Bolt IoT Android or IOS app)
HTML code is attached below and save it.
To see the Switch on Phone, Open Bolt app on the Smartphone>> Click on your Bolt device name or Id
Screenshot of the switch on the phone

Switch On the BOLT IOT app

Step 4:Writing the Python code on Server

I have done this project in Oracle VM Virtual Box. You can also use Digital Ocean and Ubuntu servers.

Now make conf.py which has the information of Twilio (Login and you use API) and Bolt Cloud account By creating configuration

sudo nano conf.py

and write the following code

SSID = 'You can find SSID 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 account API key'
DEVICE_ID = 'This is the ID of your Bolt device'

by pressing the Ctrl + X to save the file

Now make one more file name sms.py in which we will write the python code for sending the notification

sudo nano sms.py

python code is attached below.

After creating and saving both files then run the code by using the following command

python3 sms.py

Working principle

A Smart System which consists of LDR, LED lights and Bolt IOT WiFi Module is placed in the pubic street poles.

LDR Sensor measures the light intensity and this data send it to the cloud through Bolt IOT module.
If the light intensity becomes less than the limit then related data send to cloud.
The server which is running with python code detect the data and if Light intensity is less than the limit then it calls Twilio SMS service to send the notification.
Twilio SMS service sends the notification to the phone number of the Municipal Corporation and so they will turn the Street light ON with the help of their Smartphone
Screenshots of SMS:

1 / 2 • Turn On lights SMS

This is the Smart System to provide lights in public areas and send notification itself to the Municipal Corporation when the intensity of light decrease. So the Municipal Corporation will easily turn ON lights with the help of their Smartphone. And it also sends SMS for turn OFF lights.

Code

<html>

    <head>
        <style>
            
            
            h1 { text-align:center;}
            .button {
  background-color: #7FFF00; 
  border: none;
  color: red;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
        
        </style>

        <title>IoT Platform</title>

        <script type="text/javascript" src="https://cloud.boltiot.com/static/js/boltCommands.js"></script>

        <script>

        setKey('{{ApiKey}}','{{Name}}');

        </script>
        <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">

    </head>
    
    <body >
        <h1 style = font-family:"courier",text-align:"center"> Controlling Street  LED Over Internet </h1>

        <center>

        <button class="button" onclick="digitalWrite(0, 'HIGH');">ON</button>

        <button class="button" onclick="digitalWrite(0, 'LOW');">OFF</button>

        </center>
        <center>
            <i class="material-icons" style="font-size:60px;color:#00FFFF;">cloud</i>
        </center>
        

    </body>

</html>

import conf, json, time
from boltiot import Sms, Bolt
import json, time

minimum_limit = 80 #can be change
maximum_limit1 = 300 #can be change
maximum_limit2 = 350

mybolt = Bolt(conf.API_KEY, conf.DEVICE_ID)
sms = Sms(conf.SID, conf.AUTH_TOKEN, conf.TO_NUMBER, conf.FROM_NUMBER)


while True: 
    print ("Reading sensor value")
    response = mybolt.analogRead('A0') 
    data = json.loads(response) 
    print("Sensor value is: " + str(data['value']))
    try: 
        sensor_value = int(data['value']) 
        if maximum_limit1 <sensor_value > maximum_limit2 :
            response = sms.send_sms("Hi there Turn OFF the Street Lights Of Kolar region Bhopal")
        elif sensor_value < minimum_limit:
            response = sms.send_sms("Hi there Turn ON the Street Lights Of Kolar region Bhopal")
    except Exception as e: 
        print ("Error occured: Below are the details")
        print (e)
    time.sleep(900) #after 15 min again read the data