SMART SAMAJ PARICHARAK

The Smart Samaj Paricharak is an IoT-based waste management solution that leverages advanced technologies to help municipalities maintain cleanliness. This system uses  an ESP8266 Module, an IR sensor, an ultrasonic sensor, and a servo motor, all integrated with Blynk 2.0 for efficient monitoring and control.

Components Required:

1. ESP8266 (Node MCU) – 1
2. IR Sensor – 1
3. Ultrasonic Sensor (HC-SR04) – 1
4. Servo Motor – 1
5. Resistor (10kΩ) – 1
6. USB Cable – 1
7. Breadboard and Jumper wires

Components and it’s function

1. ESP8266: A Wi-Fi-enabled brain that facilitates wireless communication with Blynk 2.0.
2. Ultrasonic Sensor: Measures the distance to the waste in the bin, determining the fill level.
3. IR Sensor: Detects the presence and distance of waste to confirm disposal events.
4. Servo Motor: Control movements, such as opening and closing the bin lid based on sensor inputs.

Pin Connections

1. ESP8266 (Node MCU) Pins:
   • D2: Servo motor control pin
   • D5: Ultrasonic sensor echo pin
   • D6: Ultrasonic sensor trig pin
   • D7: IR sensor output pin
2. IR Sensor:
   • VCC: Connect to 3.3V on ESP8266
   • GND: Connect to GND on ESP8266
   • Output: Connect to D7 on ESP8266
3. Ultrasonic Sensor (HC-SR04):
   • VCC: Connect to 5V (Node MCU provides a 5V pin)
   • GND: Connect to GND on ESP8266
   • Trig: Connect to D6 on ESP8266
   • Echo: Connect to D5 on ESP8266
4. Servo Motor:
   • Signal: Connect to D2 on ESP8266
   • VCC: Connect to 5V
   • GND: Connect to GND

Blynk 2.0 Features:

Blynk 2.0 offers enhanced features for creating and managing IoT projects. Here’s how to create templates for the Smart Samaj Paricharak:

Creating Templates on Blynk 2.0

1. Template for Ultrasonic Sensor (Bin Level)
   • Create a New Template: Log into your Blynk 2.0 account and create a new template named “Bin Level Monitor.”
   • Add Data Streams: Add a data stream for the ultrasonic sensor. Set the data stream type to Integer and unit to cm to measure the fill level.
   • Widgets: Add a Gauge widget to display the bin level in real-time. Link this widget to the ultrasonic sensor data stream.

2. Template for IR Sensor (Waste Detection)
   • Create a New Template: Create another template named “Waste Detection Monitor.”
   • Add Data Streams: Add a data stream for the IR sensor. Set the data stream type to Integer and unit to cm for distance measurement.
   • Widgets: Add a Value Display widget to show the IR sensor readings. Link this widget to the IR sensor data stream.

3. Template for Servo Motor (Angle Control)
   • Create a New Template: Create a third template named “Servo Angle Control.”
   • Add Data Streams: Add a data stream for the servo motor. Set the data stream type to Integer and unit to degrees to control the servo angle.
   • Widgets: Add a Slider widget to adjust the servo motor angle. Link this widget to the servo motor data stream.

Working:

1. Monitoring: The ultrasonic sensor continuously measures the bin’s fill level and updates the Blynk cloud.
2. Detection: The IR sensor detects waste presence and distance, for accurate monitoring.
3. Control: The servo motor’s angle can be controlled through the Blynk app, managing bin lid operations.
4. Alerts: When the bin is full, the ultrasonic sensor send an alert in the Blynk app, notifying the municipal team to empty the bin.

Benefits for Municipalities:

• Real-time Monitoring: Municipal workers can monitor bin levels and waste detection in real-time via the Blynk app.
• Remote Control: Adjust the servo motor and manage bin operations from anywhere.
• Efficient Waste Collection: Timely alerts ensure bins are emptied before they overflow, maintaining public cleanliness.
• Data Analysis: Historical data helps optimize waste collection schedules and routes.

The Smart Samaj Paricharak, integrated with Blynk 2.0, offers a comprehensive solution for smart waste management, enhancing operational efficiency and cleanliness in urban areas.

#define BLYNK_TEMPLATE_ID "Template ID"
#define BLYNK_TEMPLATE_NAME "Template ID"
#define BLYNK_AUTH_TOKEN "Auth Token"

#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "**********";
char pass[] = "**********";

BlynkTimer timer;

#define echoPin D5
#define trigPin D6
#include<Servo.h>
Servo servo;
long duration;
int distance; 
int binLevel=0;

void SMESensor()
{
  int ir=digitalRead(D7);
  if(ir==HIGH)
  {    
    servo.write(90);
    for(int i=0; i<50; i++)
    {
      Blynk.virtualWrite(V2, 90);
      ultrasonic(); 
      delay(100);
    }
    servo.write(0);
    Blynk.virtualWrite(V2, 0);
  }
  if(ir==LOW)
  {
    
    ultrasonic();
    delay(200);
  }
}
void ultrasonic()
{
    digitalWrite(trigPin, LOW);
    delayMicroseconds(2);
    digitalWrite(trigPin, HIGH);
    delayMicroseconds(10);
    digitalWrite(trigPin, LOW);
    duration = pulseIn(echoPin, HIGH);
    distance = duration * 0.034 / 2; //formula to calculate the distance for ultrasonic sensor
    binLevel=map(distance, 21, 0, 0,100); // ADJUST BIN HEIGHT HERE
    Blynk.virtualWrite(V0, distance);
    Blynk.virtualWrite(V1, binLevel);
}
void setup()
{
  Serial.begin(9600);
  servo.attach(D2);
  pinMode(D7, INPUT);
  pinMode(trigPin, OUTPUT); 
  pinMode(echoPin, INPUT); 
   Blynk.begin(auth, ssid, pass);
  delay(2000);
  timer.setInterval(1000L, SMESensor);
}

void loop() 
{
  Blynk.run();
  timer.run();
}