Iot Workshop Manual Io T
User Manual:
Open the PDF directly: View PDF 
.
Page Count: 33
| Download | |
| Open PDF In Browser | View PDF |
SVIT IoT CLUB
IOT WORKSHOP
MANUAL
Compiled By:
Prof. Abhijith H V
Assistant Professor
Dept. of ISE
SVIT, Bengaluru – 64
Department of Information Science and Engineering
&
Department of Computer Science and Engineering
Sai Vidya Institute of Technology
Rajanukunte, Bengaluru – 560064
2018-2019
IoT Workshop
Software installation procedure
1) Download and install Arduino IDE from the below link
https://www.arduino.cc/en/Main/Software
(select windows installer)
2) Download and install ch340G driver from below link
https://www.arduined.eu/ch340g-converter-windows-7-driver-download/
(It will be zip format unzip to folder then go to ch340g folder then run setup)
3) Download and install cp210x driver from below link
https://www.silabs.com/products/development-tools/software/usb-to-uart-bridgevcp-drivers
(select Download VCP (5.3 MB) (Default))
(It will be zip format unzip to folder then run cp210xVCPInstaller_x86)
4) Download firebase Arduino library zip file from below link
https://github.com/FirebaseExtended/firebase-arduino
To download click clone or download button and then download zip
To install:
Open Arduino IDE installed in step 1
Select sketch -> include library -> Add .Zip Library -> select downloaded firebasearduino-master.zip from downloaded folder and press open
5) Download Arduino Json library zip file from below link
https://github.com/bblanchon/ArduinoJson
To download click clone or download button and then download zip
To install:
Open Arduino IDE installed in step 1
Select sketch -> include library -> Add .Zip Library -> select downloaded
ArduinoJson-master.zip from downloaded folder and press open
6) Download Arduino Json library zip file from below link
https://github.com/adafruit/Adafruit_MQTT_Library
To download click clone or download button and then download zip
To install:
Open Arduino IDE installed in step 1
Select sketch -> include library -> Add .Zip Library -> select downloaded adafruitmMQTT-Library-master.zip from downloaded folder and press open
7) Installing ESP8266
Open Arduino IDE installed in step 1
Go to files and click on the preference in the Arduino IDE
SVIT IoT Club
Page |1
IoT Workshop
copy the below code in the Additional boards Manager URLs:
http://arduino.esp8266.com/stable/package_esp8266com_index.json
click OK to close the preference Tab.
SVIT IoT Club
Page |2
IoT Workshop
After completing the above steps, go to Tools > board, and then
select board Manager.
Type Esp8266 in the Search bar then Select esp8266 by ESp8266
Community and install it.
It should take several minutes for downloading and installing
the Esp8266 Board managers. After installation close the Board Manager.
SVIT IoT Club
Page |3
IoT Workshop
Following Android Apps has to be installed in android phone
1) Bluetooth Terminal
2) Google Assistant
3) QR Code Scanner
4) IFTTT
SVIT IoT Club
Page |4
IoT Workshop
Experiment 1:
Blinking LED
Components Required:
•
•
•
•
•
Arduino Uno
Breadboard (Optional)
2 wires (Optional)
LED (Optional)
220 ohm resistor (Optional)
Circuit Sketch:
SVIT IoT Club
Page |5
IoT Workshop
Source Code:
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000);
// wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000);
// wait for a second
}
SVIT IoT Club
Page |6
IoT Workshop
Experiment 2:
Controlling LED Using Switch Button
Components Required:
•
•
•
•
•
Arduino Uno
Momentary button or Switch
10K ohm resistor
hook-up wires
breadboard
Circuit Sketch:
Source Code:
// constants won't change. They're used here to set pin numbers:
const int buttonPin = 2;
const int ledPin = 13;
// the number of the pushbutton pin
// the number of the LED pin
// variables will change:
int buttonState = 0;
// variable for reading the pushbutton status
void setup() {
// initialize the LED pin as an output:
pinMode(ledPin, OUTPUT);
// initialize the pushbutton pin as an input:
pinMode(buttonPin, INPUT);
}
SVIT IoT Club
Page |7
IoT Workshop
void loop() {
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);
// check if the pushbutton is pressed. If it is, the buttonState is HIGH:
if (buttonState == HIGH) {
// turn LED on:
digitalWrite(ledPin, HIGH);
} else {
// turn LED off:
digitalWrite(ledPin, LOW);
}
}
SVIT IoT Club
Page |8
IoT Workshop
Experiment 3:
Analog Read Serial
Components Required:
•
•
Arduino Uno
10k ohm Potentiometer
Circuit Sketch:
Source Code:
// the setup routine runs once when you press reset:
void setup() {
// initialize serial communication at 9600 bits per second:
Serial.begin(9600);
}
// the loop routine runs over and over again forever:
void loop() {
// read the input on analog pin 0:
int sensorValue = analogRead(A0);
SVIT IoT Club
Page |9
IoT Workshop
// print out the value you read:
Serial.println(sensorValue);
delay(1);
// delay in between reads for stability
}
SVIT IoT Club
P a g e | 10
IoT Workshop
Experiment 4:
Controlling LED using Potentiometer
Components Required:
•
•
Arduino Uno
10k ohm Potentiometer
Circuit Sketch:
Source Code:
int POT = A0; //Intialize pin A1 for LDR
int LD_2= 13; // Intialize pin 9(LD2) as analog for the LED
int potValue = 0; // Initialize ldrValue to 0
int ledValue = 0; // Initialize ledValue to 0
void setup()
{
Serial.begin(9600); //Baud rate for serial communication
}
void loop()
{
SVIT IoT Club
P a g e | 11
IoT Workshop
potValue = analogRead(POT); // Read present analog input from POT
ledValue = map(potValue, 0, 1023, 0, 255);/*change the analog out
value to control LED
brightness*/
analogWrite(LD_2, ledValue);// write analog value to output pin
Serial.print("sensor = "); // print values
Serial.print(potValue);
Serial.print("\t output = ");
Serial.println(ledValue);
delay(2); // Read after every 2 milliSeconds
}
SVIT IoT Club
P a g e | 12
IoT Workshop
Experiment 5:
Controlling LED using LDR
Components Required:
•
•
•
•
•
Arduino Uno
Breadboard
Wires
100K ohm resistor
LDR (Photoresistor)
Circuit Sketch:
Source Code:
#include
int sensorPin = A0; // select the input pin for the LDR
int sensorValue = 0; // variable to store the value coming from the sensor
int led = 13;
void setup() { // declare the ledPin as an OUTPUT:
pinMode(led, OUTPUT);
Serial.begin(9600);
}
SVIT IoT Club
P a g e | 13
IoT Workshop
void loop()
{
sensorValue = analogRead(sensorPin);
Serial.println(sensorValue);
if (sensorValue < 100)
{
Serial.println("LED light on");
digitalWrite(led,HIGH);
delay(1000);
}
digitalWrite(led,LOW);
delay(sensorValue);
}
SVIT IoT Club
P a g e | 14
IoT Workshop
Experiment 6:
Controlling LED using Bluetooth from Android Phone
Components Required:
•
•
•
•
•
Arduino Uno
HC-05 Bluetooth module
Jumper wires
220 Ohm Resistor
LED
Circuit Sketch:
Source Code:
#include // To define software Serial
int LD_1=13; //Intialize pin D8 for LED (LD1)
int incoming=0; //Initialize incoming data to 0
SoftwareSerial svit(3, 2);//Set software serial(RX,TX) pins
SVIT IoT Club
P a g e | 15
IoT Workshop
void setup()
{
pinMode(LD_1,OUTPUT); //To configure LED a output pin
Serial.begin(9600); // Baud rate for serial communication
svit.begin(9600); /*Baud rate for software serial communication*/
}
void loop()
{
if (svit.available()>0) /*check if any incoming data from software serial pins */
{
incoming=svit.read();/*read if any incoming data from software serial pins */
svit.println(incoming);/*print incoming data in serial monitor*/
if(incoming=='1') // check if incoming number is digit 1
{
digitalWrite(LD_1,HIGH); // set LED as high
}
if(incoming=='2') // check if incoming number is digit 2
{
digitalWrite(LD_1,LOW); // set LED as low
}
}
}
SVIT IoT Club
P a g e | 16
IoT Workshop
Experiment 7:
Temperature Measurement using LM35
Components Required:
•
•
•
Arduino Uno
Jumper Wires
LM35 Temperature sensor
Circuit Sketch:
Source Code:
int val;
int tempPin = A1;
void setup()
{
Serial.begin(9600);
}
void loop()
SVIT IoT Club
P a g e | 17
IoT Workshop
{
val = analogRead(tempPin);
float mv = val*4.833;
float cel = mv/10;
float farh = (cel*9)/5 + 32;
Serial.print("TEMPRATURE = ");
Serial.print(cel);
Serial.print("*C");
Serial.println();
delay(1000);
Serial.print("TEMPRATURE = ");
Serial.print(farh);
Serial.print("*F");
Serial.println();
}
SVIT IoT Club
P a g e | 18
IoT Workshop
Experiment 8:
LED Blinking using NodeMCU
Components Required:
NodeMCU
Source Code:
#define LED D0
// Led in NodeMCU at pin GPIO16 (D0).
void setup() {
pinMode(LED, OUTPUT);
// LED pin as output.
}
void loop() {
digitalWrite(LED, HIGH);// turn the LED off.(Note that LOW is the voltage level but
actually
//the LED is on; this is because it is acive low on the ESP8266.
delay(1000);
// wait for 1 second.
digitalWrite(LED, LOW); // turn the LED on.
delay(1000); // wait for 1 second.
}
SVIT IoT Club
P a g e | 19
IoT Workshop
Experiment 9:
Temperature Sensing using NodeMCU
Components Required:
•
•
•
NodeMCU
LM35 Temperature Sensor
Jumper Wires
Circuit Sketch:
Source Code:
// initializes or defines the output pin of the LM35 temperature sensor
int outputpin= A0;
//this sets the ground pin to LOW and the input voltage pin to high
void setup() {
Serial.begin(9600);
}
void loop()
//main loop
{
int analogValue = analogRead(outputpin);
float millivolts = (analogValue/1024.0) * 3300; //3300 is the voltage provided by NodeMCU
float celsius = millivolts/10;
Serial.print("in DegreeC= ");
SVIT IoT Club
P a g e | 20
IoT Workshop
Serial.println(celsius);
//---------- Here is the calculation for Fahrenheit ----------//
float fahrenheit = ((celsius * 9)/5 + 32);
Serial.print(" in Farenheit= ");
Serial.println(fahrenheit);
delay(1000);
}
SVIT IoT Club
P a g e | 21
IoT Workshop
Experiment 10:
Controlling LED using Firebase
Components Required:
•
•
NodeMCU
DB creation using Firebase
Source Code:
#include
#include
// Set these to run example.
#define FIREBASE_HOST "iot-workshop-85c3b.firebaseio.com"
#define FIREBASE_AUTH "qsE4HGf4VU26TJ3HmrjSjLVXdyD0VJrfbDU9fe0Q"
#define WIFI_SSID "AndroidAP"
#define WIFI_PASSWORD "abhi1234"
void setup() {
Serial.begin(9600);
// connect to wifi.
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
Serial.print("connecting");
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(500);
}
Serial.println();
Serial.print("connected: ");
Serial.println(WiFi.localIP());
Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
pinMode(D0,OUTPUT);
}
SVIT IoT Club
P a g e | 22
IoT Workshop
int n = 0;
void loop() {
int b = Firebase.getInt("Led");
if(b == 1)
{
digitalWrite(D0, HIGH);
}
else
{
digitalWrite(D0, LOW);
}
delay(1000);
}
SVIT IoT Club
P a g e | 23
IoT Workshop
Experiment 11:
Sending Temperature to Firebase
Components Required:
•
•
•
•
NodeMCU
LM35 Temperature Sensor
Jumper Wires
DB in Firebase
Circuit Sketch:
Source Code:
#include
#include
// Set these to run example.
#define FIREBASE_HOST "iot-workshop-85c3b.firebaseio.com"
#define FIREBASE_AUTH "qsE4HGf4VU26TJ3HmrjSjLVXdyD0VJrfbDU9fe0Q"
#define WIFI_SSID "AndroidAP"
#define WIFI_PASSWORD "abhi1234"
void setup() {
Serial.begin(9600);
SVIT IoT Club
P a g e | 24
IoT Workshop
// connect to wifi.
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
Serial.print("connecting");
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(500);
}
Serial.println();
Serial.print("connected: ");
Serial.println(WiFi.localIP());
Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
}
int n = 0;
void loop() {
int a = analogRead(A0);
float mv= a*2.932;
float cel = mv/10;
Serial.print("Tempearature:");
Serial.println(cel);
Firebase.setFloat("Temperature",cel);
delay(1000);
}
SVIT IoT Club
P a g e | 25
IoT Workshop
Experiment 12 & 13:
Demonstration of LED and Temperature Sensor through
Firebase and Android App created using MIT App Inventor2
Components Required:
•
•
•
•
•
NodeMCU
LM35 Temperature Sensor
Jumper Wires
DB in Firebase
Android Phone
Circuit Sketch:
Same as Experiment 10 and 11
Source Code:
Same as Experiment 10 and 11
SVIT IoT Club
P a g e | 26
IoT Workshop
SVIT IoT Club
P a g e | 27
IoT Workshop
Experiment 14:
LED Control using Google Assistant
Components Required:
•
•
•
NodeMCU
DB in Adafruit
Android Phone with Google Assistant, IFTTT
Circuit Sketch:
Same as Experiment 10 and 11
Source Code:
#include
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"
#define WIFI_SSID "HTC Portable Hotspot"
#define WIFI_PASS "f22298aeca91"
#define MQTT_SERV "io.adafruit.com"
#define MQTT_PORT 1883
#define MQTT_NAME "abhijithhv"
#define MQTT_PASS "6c0f0ecd1735413aaf4ec5c04a489e12"
//Set up MQTT and WiFi clients
WiFiClient client;
Adafruit_MQTT_Client mqtt(&client, MQTT_SERV, MQTT_PORT, MQTT_NAME,
MQTT_PASS);
//Set up the feed you're subscribing to
Adafruit_MQTT_Subscribe onoff = Adafruit_MQTT_Subscribe(&mqtt, MQTT_NAME
"/f/Led");
SVIT IoT Club
P a g e | 28
IoT Workshop
void setup()
{
Serial.begin(9600);
//Connect to WiFi
Serial.print("\n\nConnecting Wifi... ");
WiFi.begin(WIFI_SSID, WIFI_PASS);
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
}
Serial.println("OK!");
//Subscribe to the onoff feed
mqtt.subscribe(&onoff);
pinMode(D0, OUTPUT);
digitalWrite(D0, HIGH);
}
void loop()
{
MQTT_connect();
//Read from our subscription queue until we run out, or
//wait up to 5 seconds for subscription to update
Adafruit_MQTT_Subscribe * subscription;
while ((subscription = mqtt.readSubscription(5000)))
SVIT IoT Club
P a g e | 29
IoT Workshop
{
//If we're in here, a subscription updated...
if (subscription == &onoff)
{
//Print the new value to the serial monitor
Serial.print("onoff: ");
Serial.println((char*) onoff.lastread);
//If the new value is "ON", turn the light on.
//Otherwise, turn it off.
if (!strcmp((char*) onoff.lastread, "1"))
{
//Active low logic
digitalWrite(D0, LOW);
}
else
{
digitalWrite(D0, HIGH);
}
}
}
// ping the server to keep the mqtt connection alive
if (!mqtt.ping())
{
mqtt.disconnect();
}
}
SVIT IoT Club
P a g e | 30
IoT Workshop
/***************************************************
Adafruit MQTT Library ESP8266 Example
Must use ESP8266 Arduino from:
https://github.com/esp8266/Arduino
Works great with Adafruit's Huzzah ESP board & Feather
----> https://www.adafruit.com/product/2471
----> https://www.adafruit.com/products/2821
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Tony DiCola for Adafruit Industries.
MIT license, all text above must be included in any redistribution
****************************************************/
void MQTT_connect()
{
int8_t ret;
// Stop if already connected.
if (mqtt.connected())
{
return;
}
Serial.print("Connecting to MQTT... ");
SVIT IoT Club
P a g e | 31
IoT Workshop
uint8_t retries = 3;
while ((ret = mqtt.connect()) != 0) // connect will return 0 for connected
{
Serial.println(mqtt.connectErrorString(ret));
Serial.println("Retrying MQTT connection in 5 seconds...");
mqtt.disconnect();
delay(5000); // wait 5 seconds
retries--;
if (retries == 0)
{
// basically die and wait for WDT to reset me
while (1);
}
}
Serial.println("MQTT Connected!");
}
SVIT IoT Club
P a g e | 32
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.7 Linearized : No Page Count : 33 Language : en-IN Tagged PDF : Yes XMP Toolkit : 3.1-701 Producer : Microsoft® Word 2016 Title : Iot workshop manual Creator : Abhijith H V Description : Compiled By Creator Tool : Microsoft® Word 2016 Create Date : 2019:02:07 22:41:44+05:30 Modify Date : 2019:02:07 22:41:44+05:30 Document ID : uuid:067321BB-FFE1-47C1-BC0B-9479B55A4C93 Instance ID : uuid:067321BB-FFE1-47C1-BC0B-9479B55A4C93 Author : Abhijith H V Subject : Compiled ByEXIF Metadata provided by EXIF.tools