Wet & Dry Waste Smart Dustbin for House | Best science Project | Harish Projects

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 Watch Full Detailed video 👇🏻 Diagram in Video👆 //Arduino Code// //YouTube: Harish Projects //Order Electronic Parts & Project kit:  HarishProjects.com // #include <Servo.h> Servo servo1; const int trigPin = 12; const int echoPin = 11; long duration; int distance=0; int potPin = A0; //input pin int soil=0; int fsoil; void setup()  {   Serial.begin(9600); //Serial.print("Humidity"); pinMode(trigPin, OUTPUT);  pinMode(echoPin, INPUT);  servo1.attach(8); } void loop()  { //YouTube: Harish Projects //Order Electronic Parts & Project kit:  HarishProjects.com //      int soil=0;   for(int i=0;i<2;i++)   { digitalWrite(trigPin, LOW); delayMicroseconds(7); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); delayMicroseconds(10); duration = pulseIn(echoPin, HIGH); distance= duration*0.034/2+distance; delay(10);   }   distance=distance/2;   Serial.println(distance); if ...
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how to make Fingerprint door lock project / fingerprint sensor with arduino uno / Harish Projects

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 full making video link - https://youtu.be/p_5H-3qjmEM

//Arduino Code//

#include <Adafruit_Fingerprint.h>


SoftwareSerial mySerial(2, 3);

Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);


#define RELAY_PIN       4

#define ACCESS_DELAY    3000 // Keep lock unlocked for 3 seconds 



void setup()

{

  // set the data rate for the sensor serial port

  finger.begin(57600);

  delay(5);

  if (finger.verifyPassword()) 

  {

  } 

  else 

  {

    while (1) { delay(1); }

  }

  

  pinMode(RELAY_PIN, OUTPUT);

  digitalWrite(RELAY_PIN, HIGH);   //Switch off relay initially. Relay is LOW level triggered relay so we need to write HIGH.

}


void loop()

{

  if ( getFingerPrint() != -1)

  {

    digitalWrite(RELAY_PIN, LOW);

    delay(ACCESS_DELAY);

    digitalWrite(RELAY_PIN, HIGH);   

  }  

  delay(50);            //Add some delay before next scan.

}


// returns -1 if failed, otherwise returns ID #

int getFingerPrint() 

{

  int p = finger.getImage();

  if (p != FINGERPRINT_OK)  return -1;


  p = finger.image2Tz();

  if (p != FINGERPRINT_OK)  return -1;


  p = finger.fingerFastSearch();

  if (p != FINGERPRINT_OK)  return -1;


  // found a match!

  return finger.fingerID;

}


//Project Diagram//






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