Internet of Things Workshop @ Nirma University 2019

Refer this repository for the IoT Workshop at Nirma University organized under MESA's annual techno cultural colloquium, PRAVEG-2019.

Arduino IDE Installation

Arduino IDE is an integrated development environment where you can write your programs for all compatible development boards. During the workshop we are going to use the NodeMCU 1.0 (ESP-12E Module). NodeMCU is based on the Esperessif ESP8266-12E WiFi System-On-Chip, loaded with an open-source, Lua-based firmware. it’s perfect for IoT applications, and other situations where wireless connectivity is required.

You are required to follow the given steps to get started with programming for this workshop.

1. Go to the following link to download and install the Arduino package for the correct platform. https://www.arduino.cc/en/main/software

2. Open the Arduino IDE and click on File -> Preferences.

3. In Aditional Boards Manager URLs add this line and click on "OK": http://arduino.esp8266.com/stable/package_esp8266com_index.json

4. Go to Tools -> Board -> Boards Manager, type "ESP8266" and install "esp8266 by ESP8266 Community".

5. Go again to Tools -> Board and select "NodeMCU 1.0 (ESP-12E Module)".

Once you complete all the steps, you are ready to start programming on the NodeMCU.

Hello Arduino

Here is your first Arduino IDE code of LED blink on ESP8266 board.

int led = 2;  // built-in LED.
// the setup function runs only once.
void setup() {
  Serial.begin(115200); //Set data rate in bits per second (baud) for serial data transmission.
  pinMode(led, OUTPUT);  //Initialize built-in LED as an output.
  digitalWrite(led,HIGH); //Setup led as OFF.
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(led, LOW);                 // turn the LED on
  Serial.println("Built-in LED is ON");   //print on the serial monitor
  delay(1000);                            // wait for a second
  digitalWrite(led, HIGH);                // turn the LED off
  Serial.println("Built-in LED is OFF");  //print on the serial monitor
  delay(1000);                            // wait for a second
}

You can explore more such ready made codes in the well written Built-in Example section of your Arduino IDE present in File Menu.

Installing MyMQTT app

In one of the practical you will be required to use MQTT protocol to send and receive messages. You are required to install an Android App for the same purpose. Refer the link below.

https://play.google.com/store/apps/details?id=at.tripwire.mqtt.client&hl=en_IN

Tasks

• Reverse Car Parking Sensor
  Objective:
  To implement real world reverse car parking sensor using Ultrasonic Sensor, Buzzer, LED and NODEMCU ESP8266. Also it, should be connected to a remote device like Mobile phone through WiFi. The device should function as follows

Distance	LED	Buzzer
Distant	All LEDs should remain OFF	Silent
Far	1 LED should turn ON	Buzzer should beep at low frequency
Near	2 LEDs should turn ON	Buzzer should beep at medium frequency
Close	All LEDs should turn ON	Buzzer should beep at high frequency

The distance should also be visible on remote device connected to the microcontroller.

• Clap on Lights!
  Objective:
  To implement light automation system which turn on the Lights (LED) by clapping once and turns off after the second clap using microphone module and ESP8266 NodeMCU. It should work as an emergency alarm as well, if one claps fast, it should display an emergency message on the mobile phone and LEDs should blink.

• Temperature and Humidity Remote Sensing
  Objective:
  To measure Temprature and Humidity using DHT11 sensor and ESP8266 NodeMCU, and sending the data to node-red for visualization. The data should be visible on mobile phone in real time.
  

Datasheets

1. Brief about ESP 8266 NodeMCU
   https://www.handsontec.com/pdf_learn/esp8266-V10.pdf
2. DHT11 Temperature and Pressure Sensor
   https://www.mouser.com/ds/2/758/DHT11-Technical-Data-Sheet-Translated-Version-1143054.pdf
3. Microphone Sensor Module KY-038
   https://datasheetspdf.com/pdf-file/1402048/Joy-IT/KY-038/1
4. Adafruit ESP8266EX
   https://cdn-shop.adafruit.com/product-files/2471/0A-ESP8266__Datasheet__EN_v4.3.pdf
5. Ultrasonic Sensor HC-SR04
   https://datasheetspdf.com/pdf-file/1291829/Cytron/HC-SR04/1
6. 5V Buzzer
   http://www.farnell.com/datasheets/2171929.pdf

Introduction to NODE-RED

Node-RED is a programming tool for wiring together hardware devices, APIs and online services in new and interesting ways. It provides a browser-based editor that makes it easy to wire together flows using the wide range of nodes in the palette that can be deployed to its runtime in a single-click. Node-RED provides a browser-based flow editor that makes it easy to wire together flows using the wide range of nodes in the palette. Flows can be then deployed to the runtime in a single-click. JavaScript functions can be created within the editor using a rich text editor. A built-in library allows you to save useful functions, templates or flows for re-use.

To get started: https://www.youtube.com/watch?v=vYreeoCoQPI

Installation (Windows)

Step 1: Download Node js from https://nodejs.org/en/download/ and Install into C drive.
Step 2: Open Command prompt in admin mode. type the following command

npm install -g --unsafe-perm node-red

Step 3: In command prompt, write

node-red

Step 4: Open any browser and goto http://127.0.0.1:1880/ and you are ready to go

Installation (Ubuntu)

Step 1: Open Terminal and type

sudo apt-get update

Step 2: Add Node.js PPA

sudo apt-get install curl
curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -

Step 3: Installing nodejs and npm,

sudo apt-get install nodejs
sudo apt-get install npm

Step 4: Finally, install nodered

sudo npm install -g --unsafe-perm node-red

Step 5: Open any browser and goto http://127.0.0.1:1880/ and you are ready to go

Thingspeak - Your IoT Analytica

ThingSpeak is an open-source Internet of Things (IoT) application and API to store and retrieve data from things using the HTTP and MQTT protocol over the Internet or via a Local Area Network. ThingSpeak enables the creation of sensor logging applications, location tracking applications, and a social network of things with status updates.ThingSpeak has integrated support from the numerical computing software MATLAB from MathWorks, allowing ThingSpeak users to analyze and visualize uploaded data using Matlab without requiring the purchase of a Matlab license from Mathworks

For Your Reference

1. List of sensors available for Arduino module

• https://www.thegeekpub.com/wiki/list-of-arduino-sensors-and-modules/

2. Cayenne App for Raspberry Pi Monitoring

• Play store: https://play.google.com/store/apps/details?id=com.mydevices.cayenne&hl=en_IN

• App Store: https://apps.apple.com/us/app/cayenne-iot-project-builder/id1057997711