IoT Workshop

The Internet of things (IoT) is the inter-networking of physical devices, vehicles, buildings, and other items embedded with electronics, software, sensors, actuators, and network connectivity which enable these objects to collect and exchange data.

The IoT allows objects to be sensed or controlled remotely across existing network infrastructure, creating opportunities for more direct integration of the physical world into computer-based systems, and resulting in improved efficiency, accuracy and economic benefit in addition to reduced human intervention.

When IoT is augmented with sensors and actuators, the technology becomes an instance of the more general class of cyber-physical systems, which also encompasses technologies such as smart grids, virtual power plants, smart homes, intelligent transportation and smart cities.

ESP8266 Workshop

In these IoT labs, you will learning to build a Thing connected to sensors and actuators. You will move on to connecting the Thing to the Internet. You will learn how to leverage the Cloud (Blink App) to collect data and control devices and use advanced services like analytics and machine learning to discover insights using your Things.

Esp8266 Board :-

Download Esp8266 Driver :- http://arduino.esp8266.com/stable/package_esp8266com_index.json

Esp32 Board :-

Download Esp32 Driver :- https://dl.espressif.com/dl/package_esp32_index.json

Code :-

 
//Prateek
//www.prateeks.in

#include <ESP8266WiFi.h>
const char* ssid     = "REPLACE_WITH_YOUR_SSID";
const char* password = "REPLACE_WITH_YOUR_PASSWORD";

WiFiServer server(80);

String header;
String output5State = "off";
String output4State = "off";
const int output5 = 5;
const int output4 = 4;
unsigned long currentTime = millis();
unsigned long previousTime = 0;
const long timeoutTime = 2000;

void setup() {
  Serial.begin(115200);
  pinMode(output5, OUTPUT);
  pinMode(output4, OUTPUT);
  digitalWrite(output5, LOW);
  digitalWrite(output4, LOW);
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  server.begin();
}

void loop() {
  WiFiClient client = server.available();

  if (client) {
    Serial.println("New Client.");
    String currentLine = "";
    currentTime = millis();
    previousTime = currentTime;
    while (client.connected() && currentTime - previousTime <= timeoutTime) {
      currentTime = millis();
      if (client.available()) {
        char c = client.read();
        Serial.write(c);
        header += c;
        if (c == '\n') {
          if (currentLine.length() == 0) {
            client.println("HTTP/1.1 200 OK");
            client.println("Content-type:text/html");
            client.println("Connection: close");
            client.println();
            if (header.indexOf("GET /5/on") >= 0) {
              Serial.println("GPIO 5 on");
              output5State = "on";
              digitalWrite(output5, HIGH);
            } else if (header.indexOf("GET /5/off") >= 0) {
              Serial.println("GPIO 5 off");
              output5State = "off";
              digitalWrite(output5, LOW);
            } else if (header.indexOf("GET /4/on") >= 0) {
              Serial.println("GPIO 4 on");
              output4State = "on";
              digitalWrite(output4, HIGH);
            } else if (header.indexOf("GET /4/off") >= 0) {
              Serial.println("GPIO 4 off");
              output4State = "off";
              digitalWrite(output4, LOW);
            }
            client.println("<!DOCTYPE html><html>");
            client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">");
            client.println("<link rel=\"icon\" href=\"data:,\">");
            client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");
            client.println(".button { background-color: #195B6A; border: none; color: white; padding: 16px 40px;");
            client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");
            client.println(".button2 {background-color: #77878A;}</style></head>");

            client.println("<body><h1>ESP8266 Web Server</h1>");

            client.println("<p>GPIO 5 - State " + output5State + "</p>");
            if (output5State == "off") {
              client.println("<p><a href=\"/5/on\"><button class=\"button\">ON</button></a></p>");
            } else {
              client.println("<p><a href=\"/5/off\"><button class=\"button button2\">OFF</button></a></p>");
            }
            client.println("<p>GPIO 4 - State " + output4State + "</p>");
            if (output4State == "off") {
              client.println("<p><a href=\"/4/on\"><button class=\"button\">ON</button></a></p>");
            } else {
              client.println("<p><a href=\"/4/off\"><button class=\"button button2\">OFF</button></a></p>");
            }
            client.println("</body></html>");
            client.println();
            break;
          } else {
            currentLine = "";
          }
        } else if (c != '\r') {
          currentLine += c;
        }
      }
    }
    // Clear the header variable
    header = "";
    // Close the connection
    client.stop();
    Serial.println("Client disconnected.");
    Serial.println("");
  }
}

2. LM35 Interfacing with Esp8266

Code :-

 
//Prateek
//www.prateeks.in

#include <ESP8266WiFi.h>
const char* ssid     = "*********"; // Your ssid
const char* password = "***********"; // Your Password
float temp_celsius = 0;
float temp_fahrenheit = 0;
WiFiServer server(80);
void setup() {
 Serial.begin(115200);
  pinMode(A0, INPUT);   
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi is connected");
server.begin();
Serial.println("Server started");
Serial.println(WiFi.localIP());
}
void loop() {
temp_celsius = (analogRead(A0) * 330.0) / 1023.0;  
temp_fahrenheit = celsius * 1.8 + 32.0;
Serial.print("  Temperature = ");
Serial.print(temp_celsius);
Serial.print(" Celsius, ");
Serial.print(temp_fahrenheit);
Serial.println(" Fahrenheit");

WiFiClient client = server.available();
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close");  
client.println("Refresh: 10");  
client.println();
client.println("<!DOCTYPE HTML>");
client.println("<html>");
client.print("<p style='text-align: center;'><span style='font-size: x-large;'><strong>Digital Thermometer</strong></span></p>");
client.print("<p style='text-align: center;'><span style='color: #0000ff;'><strong style='font-size: large;'>Temperature (*C)= ");
client.println(temp_celsius);
client.print("<p style='text-align: center;'><span style='color: #0000ff;'><strong style='font-size: large;'>Temperature (F) = ");
client.println(temp_fahrenheit);
client.print("</p>");
client.println("</html>");
delay(5000);
}

3. Wireless Notice Board

Code :-

 
 
//Prateek
//www.prateeks.in

#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);  

AsyncWebServer server(80);

const char* ssid = "justDo";  //wifi ssid
const char* password = "pratik123";   //wifi password

const char* PARAM_INPUT_1 = "input1";

const char index_html[] PROGMEM = R"rawliteral(
<!DOCTYPE HTML><html><head>
  <title>Smart Notice Board</title>
  <meta name="viewport" content="width=device-width, initial-scale=5">
<p>
<font size="9" face="sans-serif"> <marquee> Smart Notice Board </marquee> </font> </p>
</head><body><center>
  <form action="/get">
    Enter Text to Display: <input type="text" name="input1">
    <input type="submit" value="Send">
  </form>
<br>
 
</center>
</body></html>)rawliteral";

void notFound(AsyncWebServerRequest *request) {
  request->send(404, "text/plain", "Not found");
}

void setup() {
  Serial.begin(115200);
 lcd.begin(); 
      lcd.backlight();
   lcd.setCursor(0, 0);
   lcd.print("Smart Notice Board");
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  if (WiFi.waitForConnectResult() != WL_CONNECTED) {
    Serial.println("WiFi Failed!");
    return;
  }
  Serial.println();
  Serial.print("IP Address: ");
  Serial.println(WiFi.localIP());

  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/html", index_html);
  });

  server.on("/get", HTTP_GET, [] (AsyncWebServerRequest *request) {
    String message;
    String inputParam;
    if (request->hasParam(PARAM_INPUT_1)) {
      message = request->getParam(PARAM_INPUT_1)->value();
      inputParam = PARAM_INPUT_1;
       lcd.clear();
       lcd.setCursor(0,0);
      
      lcd.print(message);
    }
    else {
      message = "No message sent";
      inputParam = "none";
    }
    Serial.println(message);
   
  request->send(200, "text/html", index_html);
  });
  server.onNotFound(notFound);
  server.begin();
}

void loop() {
    for (int positionCounter = 0; positionCounter < 29; positionCounter++) {
    lcd.scrollDisplayLeft();
    delay(500);
  }
}

IoT Workshop

0 Comments

Build Your Own Gps Tracking System using Arduino

How To Make RFID & Keypad Based Door Lock

IoT Based Fingerprint Biometric Attendance System Using NodeMCU (Esp8266)

ESP32 Interfacing With LDR Sensor

Ultrasonic Sensor as a Counter with Arduino

IoT Based Patient Health Monitoring System Using Blynk App

Nodemcu Interfacing With Em-18

OTP Based Door Lock Using Arduino And SIM800L

Esp32 Cam Based Face Unlock

MLX90614 Non-Contact Infrared Thermometer With Arduino

YouTube

Tags

Contact List

Contact Form

IoT Workshop

You may like these posts

0 Comments

YouTube

Tags

Contact List

Contact Form