Published May 20, 2020

Reading Lights using Bolt IOT

Have you ever been so engrossed in your work that you forget to turn on your reading lights?

IntermediateFull instructions provided2 hours293

Things used in this project

Hardware components

Bolt IoT Bolt WiFi Module

USB-A to Mini-USB Cable

LDR, 1 Mohm

Resistor 10k ohm

Software apps and online services

Ubuntu

Bolt IoT Bolt Cloud

Story

1.INTRODUCTION

This project was primarily designed keeping in mind the hours of study and reading the students have to do each day to be able to compete in the world. Sometimes while reading we forget about our surroundings and this may be harmful to us. This is where my project comes in, the project I made keeps track of the light in the room and sends an alert message if the light present is not enough to keep reading and if it actually harms our eyes. Our eyes are very delicate and keeping them safe is the main agenda of this project.

2.DEMONSTRATION

Alert notification on Telegram

3.PROJECT BUILDING

In this section we will study how to build the project from scratch

3.1 Hardware Configuration

Here are the steps for making the hardware connections:

Step 1: Insert one lead of the LDR into the Bolt Module's 3v3 Pin.
Step 2: Insert other lead of the LDR into the A0 pin.
Step 2: Insert other lead of the LDR into the A0 pin.
Step 4: Insert the other leg of the resistor also into the A0 pin.

After completing the connections it will look similar to the image above.

3.2 Software Configurations

The python coding for this project has been done in Ubuntu (Linux). Before we start coding of the project Reading lights in python, we need to make a configuration file which will have the specific keys for each user/device. We will import this file in our main code and use the various attributes. The advantage of this is that each user will only have to change the contents the configuration file to use the product.

The API key and Device ID of the Bolt module can be determined as follows:

Connect your Bolt Device to the Bolt Cloud as per instructions given at https://cloud.boltiot.com/.
Go to the API section to get the API key

3.3 Creating Telegram channel and bot

Steps to create a channel.

Go to the home screen of the Telegram app.
Swipe from the left side to reveal the menu.
Click on "New Channel".
It will ask you for a Name and Description for your channel. Give a suitable name and description. Adding photo is optional.
In the next screen set the channel as Public.
it will then ask you to enter a permanent link for your channel.

You are done making your own channel on telegram.

Steps to create a bot.

Telegram allows us to create a new bot with the help of a bot called as "BotFather". It is a single bot to create and manage other bots.

On the Home screen of the app, click on the search icon on the top right and type in "botfather".
Since we need to create a new Bot, go ahead and type in "/newbot" in the window.
It will ask you to type in few more details like Bot name and Bot username.
When your bot is created successfully, you will be shown a screen similar to the one below and will contain the Bot Token. This token is used to control your Bot as well as send messages on behalf of it. Please keep this token secure as it will allow anyone to access your Bot.

Now the code the implement this given in the below code section.

3.4 Setting up a Product on Bolt Cloud

Go to https://cloud.boltiot.com/ and then follow the steps below:

Code

Telegram alert code

import requests                 
import json                     
import time                     

from boltiot import Bolt        
import conf                     

mybolt = Bolt(conf.bolt_api_key, conf.device_id)

def get_sensor_value_from_pin(pin):
        try:
        response = mybolt.analogRead(pin)
        data = json.loads(response)
        if data["success"] != 1:
            print("Request not successfull")
            print("This is the response->", data)
            return -999
        sensor_value = int(data["value"])
        return sensor_value
    except Exception as e:
        print("Something went wrong when returning the sensor value")
        print(e)
        return -999


def send_telegram_message(message):
       url = "https://api.telegram.org/" + conf.telegram_bot_id + "/sendMessage"
    data = {
        "chat_id": conf.telegram_chat_id,
        "text": message
    }
    try:
        response = requests.request(
            "POST",
            url,
            params=data
        )
        print("This is the Telegram URL")
        print(url)
        print("This is the Telegram response")
        print(response.text)
        telegram_data = json.loads(response.text)
        return telegram_data["ok"]
    except Exception as e:
        print("An error occurred in sending the alert message via Telegram")
        print(e)
        return False


while True:
        sensor_value = get_sensor_value_from_pin("A0")    
    print("The current sensor value is:", sensor_value)
    
        if sensor_value == -999:
        print("Request was unsuccessfull. Skipping.")
        time.sleep(20)
        continue
    
        if sensor_value < conf.threshold:
        print("Sensor value has exceeded threshold")
        message = "Alert! Your eyes are getting strained .Please switch on                          reading lights.
        telegram_status = send_telegram_message(message)
        print("This is the Telegram status:", telegram_status)

       time.sleep(20)

Credits

Pratheek Reddy

1 project • 1 follower

Reading Lights using Bolt IOT

Things used in this project

Hardware components

Software apps and online services

Story

1.INTRODUCTION

2.DEMONSTRATION

3.PROJECT BUILDING

Schematics

circuit connections

Code

Telegram alert code

Credits

Pratheek Reddy

Comments

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Reading Lights using Bolt IOT

Reading Lights using Bolt IOT

Things used in this project

Hardware components

Software apps and online services

Story

1.INTRODUCTION

2.DEMONSTRATION

3.PROJECT BUILDING

Schematics

circuit connections

Code

Telegram alert code

Credits

Pratheek Reddy

Comments

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