Temperature Monitoring System

We are going to make a temperature monitoring system using the LM35 sensor which measures the temperature.

BeginnerFull instructions provided2 hours476

Things used in this project

Hardware components

DFRobot Gravity: Analog LM35 Temperature Sensor For Arduino

Bolt IoT Bolt WiFi Module

USB-A to Mini-USB Cable

Male/Female Jumper Wires

Software apps and online services

Bolt IoT Android App

Story

Temperature Monitoring System using Twilio Messaging App

We are going to make a temperature monitoring system that will monitor the temperature and when the temperature will cross the threshold value it will send a message to the user telling him about the current temperature.

We will use Twilio for sending messages.

Twilio is a cloud communication platform that allows the user to send and receive text messages, make and receive phone calls and other communication functions using its API.

We will use theLM35 sensor for measuring the temperature.

LM35 is a temperature sensor which measures the temperature, It can measure temperature from -55 degrees Celsius to +150 degrees Celsius.

Hardware Connection for the project.

1. Place the LM35 sensor in such a way that the lm35 written on the sensor should be facing upside as shown in the image below.

Identify the pins of the sensor as VCC, Output, and Gnd starting from left to right.

in the above image, VCC is connected to the yellow wire, the output is connected to the green wire, and the Gnd is connected to the blue wire.

Connection to Bolt Module

VCC pin which is the yellow wire will be connected to the 5v in the Bolt Module.

Output Pin which is the green wire will be connected to the A0 in the Module.

Gnd pin which is the blue wire will be connected to Gnd in the Module.

The Final circuit will look like this.

The message received from Twilio Account for current Temperature

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

minimum_limit = 300
maximum_limit = 600  


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 sensor_value > maximum_limit or sensor_value < minimum_limit:
            print("Making request to Twilio to send a SMS")
            response = sms.send_sms("The Current temperature sensor value is " +str(sensor_value))
            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)
    time.sleep(10)

Credits

vivek sinha

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Temperature Monitoring System