How to make smart Dustbin & get free Chocolate Best Arduino Project

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Diagram 

Arduino Code

/*

  code started

  diy smart chocolate dustbin

  #define led = D4;

  #define trigger pin = D5;

  #define echo pin = D6;

  #define servo pin = D9;

  #define servo pin2 =D10;

  code created by technical ideas yt

  https://youtube.com/c/TechnicalidEas07

 

 */

#include <Servo.h>

 

Servo servo1;

 

Servo servo2;

 

int led=4;

 

int trig=5;

 

int echo=6;

 

int servo1_pin=9;

 

int servo2_pin=10;

 

int duration=0,dist=0;

 

void setup()

 

{

 

  Serial.begin(9600);

 

  

 

pinMode(led,OUTPUT);

 

pinMode(trig,OUTPUT);

 

pinMode(echo,INPUT);

 

  servo1.attach(servo1_pin);

 

  servo2.attach(servo2_pin);

 

  servo1.write(90);

 

  servo2.write(90);

 

}

 

 

void loop()

 

{

 

  digitalWrite(trig, HIGH);

 

delayMicroseconds(10);

 

digitalWrite(trig, LOW);

 

pinMode(echo, INPUT);

 

duration = pulseIn(echo, HIGH);

 

dist = (duration*0.034) / 2; //obtain distance

 

 

if(dist<20)

 

{

 

  Serial.println("Dustbin Open");

 

 

  digitalWrite(led,HIGH);

 

  servo1.write(90);

 

  servo2.write(0);

 

  delay(5000);

 

 

 

}

 

else

 

{

 

  Serial.println("Chocolate Closed");

 

  digitalWrite(led,LOW);

 

 

  servo1.write(0);

 

  servo2.write(90);

 

  delay(1000);

 

}

 

}