Sanjeev Kumar
Published © GPL3+

Smart Helmet Using IoT

A motor bike can be switched on only when the helmet is worn and switching on the mobile app.

IntermediateFull instructions provided6 hours835
Smart Helmet Using IoT

Things used in this project

Hardware components

NodeMCU ESP8266 Breakout Board
NodeMCU ESP8266 Breakout Board
×1
RFID reader (generic)
×1
434MHz RF transmitter and receiver
×1

Software apps and online services

Arduino IDE
Arduino IDE
Blynk
Blynk

Story

Read more

Schematics

Helmet transmitter

Transmitter and switch is placed inside helmet to transmit data

Bike receiver

Bike consists of rf receiver connected to nodemcu and rfid readee to receive data

Customized application design by Blynk

Customized application design by Blynk 2

Customized application design by Blynk 3

Customized application design by Blynk 4

File missing, please reupload.

Customized application design by Blynk 5

Customized application design by Blynk 4

Code

Iot helmet

Arduino
#define BLYNK_PRINT Serial


#include <SPI.h>
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <MFRC522.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "your auth code";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = your ssid";
char pass[] = your password";

#define SS_PIN D4
#define RST_PIN D3

const int helmet = D2;     // the number of the pushbutton pin
const int relay = D1;

int buttonState = 0;
int virtual_State = 0;

MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.

WidgetLCD lcd(V1);

void setup() 
{
  // put your setup code here, to run once:
pinMode(helmet, INPUT);
pinMode(relay, OUTPUT);

// Debug console
  Serial.begin(115200);
  SPI.begin();      // Initiate  SPI bus
  Blynk.begin(auth, ssid, pass);
  // You can also specify server:
  //Blynk.begin(auth, ssid, pass, "blynk-cloud.com", 80);
  //Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8080);
  mfrc522.PCD_Init(); // Init MFRC522 card
    Serial.println("Approximate your card to the reader...");
  Serial.println();

}

BLYNK_READ(V3)
{
  // This command writes Arduino's uptime in seconds to Virtual Pin (5)
  Blynk.virtualWrite(V3, buttonState);
}


  
  
       
void loop()       // put your main code here, to run repeatedly:
{
  Blynk.run();
  // You can inject your own code or combine it with other sketches.
  // Check other examples on how to communicate with Blynk. Remember
  // to avoid delay() function!
     
buttonState = digitalRead(helmet);

if((virtual_State == HIGH) && (buttonState == HIGH))
  {
     digitalWrite(relay, HIGH);
  lcd.clear();
  lcd.print(0, 0, "BIKE is");                                              // Print if helmet is weared
  lcd.print(0, 1, "UNLOCKED");
  delay(1000);   
  }
 if((virtual_State == HIGH) && (buttonState == LOW)) 
  {
     digitalWrite(relay, LOW);
  delay(3000);
  lcd.clear();
  lcd.print(0, 0, "Wear HELMET");                                // Print to show RFID card or wear helmet
  lcd.print(0, 1, "OR SHOW CARD");
  delay(1000); 
  }               
                    
if(virtual_State == LOW)
{
  digitalWrite(relay, LOW);
  lcd.clear();
  lcd.print(0, 0, "BIKE is");                                              // Print when switch is off
  lcd.print(0, 1, "LOCKED");
  delay(1000);
}


     // Look for new cards
   
  if ( ! mfrc522.PICC_IsNewCardPresent()) 
  {
    return;
  }
  // Select one of the cards
  if ( ! mfrc522.PICC_ReadCardSerial()) 
  {
    return;
  }
  //Show UID on serial monitor
  Serial.print("UID tag :");
  String content= "";
  byte letter;
  for (byte i = 0; i < mfrc522.uid.size; i++) 
  {
     Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
     Serial.print(mfrc522.uid.uidByte[i], HEX);
     content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
     content.concat(String(mfrc522.uid.uidByte[i], HEX));
  }
  Serial.println();
  Serial.print("Message : ");
  content.toUpperCase();  
    
  if(content.substring(1) == "BA BA 4B D3")
          {
            digitalWrite(relay, HIGH);
            lcd.clear();
            lcd.print(0, 0, "BIKE is ON for");                                              // Print if card is TRUE
            lcd.print(0, 1, "10 SECONDS");
            delay(10000);
            digitalWrite(relay, LOW); 
            lcd.clear();
            lcd.print(0, 0, "BIKE is");                                              // Print after time delay
            lcd.print(0, 1, "LOCKED");       
          } 
                          
          else
          {                  
            lcd.clear();
            lcd.print(0, 0, "Invalid card");                                   // Print if card is FALSE
            lcd.print(0, 1, "Access Denied");
          }                           
          
}   
BLYNK_WRITE(V2)
{
  virtual_State = param.asInt();
}

Credits

Sanjeev Kumar

Sanjeev Kumar

1 project • 0 followers

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