//project written by Subhadip Biswas
//More information & support my channel www.youtube.com/techzero
//download liquidcrystal laibary
//download keypad laibary
//I dont use display but you can use,i also written code for display
//Give a schematic in my website https://techzeroyoutube.blogspot.com
//I am use home made keypad.do you find how to make it gotoA my youtube channel www.youtube.com/techzero
#include <Keypad.h>
//#include <Servo.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
//Servo myservo;
LiquidCrystal_I2C lcd(0x27,16,2);
#define Password_Lenght 5 // Give enough room for 4 chars + NULL char
int pos = 0; // variable to store the servo position
char Data[Password_Lenght]; // 4 is the number of chars it can hold + the null char = 5
char Master[Password_Lenght] = "1234";
byte data_count = 0, master_count = 0;
bool Pass_is_good;
char customKey;
int redPin = A2; //pin to red led
int greenPin = A3; //pin to green led
int sw1 = 9; // pin to inside / emergencey switch
int lock = 10;
int IN1 = A0; // DOOR MOTOR OPEN ROTATION
int IN2 = A1; // DOOR MOTOR CLOSE ROTATION
int openend = 12; // DOOR OPEN LIMITE SWITCH
int closeend = 13; // DOOR CLOSE LIMITE SWITCH & DOOR OPENING SIGNAL
int pir = 11; // FOR DOOR CLOSEING SEQURITY
int EMS = 0; //Sudden Stop
int PIRLED = 1; //Emergancy Idicuter
int flag = 0; //variable
int doorpos = 0; //variable
int sig = 0; //variable
const byte ROWS = 4;
const byte COLS = 3;
char keys[ROWS][COLS] = {
{'1', '2', '3'},
{'4', '5', '6'},
{'7', '8', '9'},
{'*', '0', '#'}
};
bool door = true;
byte rowPins[ROWS] = {2, 3, 4, 5}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {6,7,8}; //connect to the column pinouts of the keypad
Keypad customKeypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS); //initialize an instance of class NewKeypad
// int ExterIn = LOW;
void setup()
{
lcd.init();
lcd.backlight();
digitalWrite(redPin, HIGH); // 2 leds are glowing for system a ready signal
digitalWrite(greenPin, HIGH);
lcd.begin(16,2);
lcd.home ();
lcd.print(" -WELCOME TO-");
lcd.setCursor(0, 1);
lcd.print(" -SMART DOOR-");
digitalWrite(lock, HIGH);
delay(3000);
pinMode(lock,OUTPUT);
pinMode(redPin,OUTPUT);
pinMode(greenPin,OUTPUT);
pinMode(sw1,INPUT_PULLUP);
pinMode(IN1,OUTPUT);
pinMode(IN2,OUTPUT);
pinMode(openend,INPUT_PULLUP);
pinMode(closeend,INPUT_PULLUP);
pinMode(pir,INPUT_PULLUP);
pinMode (EMS, INPUT_PULLUP);
pinMode(PIRLED, OUTPUT);
ServoClose();
lcd.clear();
}
void loop(){
DEMSTOP();
// lcd.clear();
Open();
DoorProg();
if ((digitalRead(sw1) == LOW)&&(sig == 0))
{InputSig();
sig = 1;}
else
if (door == 0)
{
lcd.clear();
lcd.print("WAITING........");
delay(100);
lcd.clear();
}
// if (doorpos == 1)
// {
// lcd.clear();
// // lcd.print("WAITING........");
// delay(100);
// }
}
void clearData()
{
while (data_count != 0)
{ // This can be used for any array size,
Data[data_count--] = 0; //clear array for new data
}
return;
}
void ServoOpen()
{
digitalWrite(lock, HIGH); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
digitalWrite(redPin, LOW);
digitalWrite(greenPin, HIGH); // signal for Door Open & Password Corect
}
void ServoClose()
{
digitalWrite(lock, LOW); // tell servo to go to position in variable 'pos'
delay(20); // waits 20ms for the servo to reach the position
digitalWrite(redPin, HIGH); // signal for door is close
digitalWrite(greenPin, LOW);
}
void Open()
{
lcd.setCursor(0, 0);
lcd.print(" ENTER PASSWORD");
customKey = customKeypad.getKey();
if (customKey) // makes sure a key is actually pressed, equal to (customKey != NO_KEY)
{
Data[data_count] = customKey ;
lcd.setCursor(data_count, 1);
lcd.print('*');// print char at said cursor and show *
data_count++; // increment data array by 1 to store new char, also keep track of the number of chars entered
}
if (data_count == Password_Lenght - 1) // if the array index is equal to the number of expected chars, compare data to master
{
if (!strcmp(Data, Master)) // equal to (strcmp(Data, Master) == 0)
{
lcd.clear();
ServoOpen();
lcd.setCursor(0, 0);
lcd.print(" --WELCOME--");
lcd.setCursor(0, 1);
lcd.print(" DOOR IS OPEN");
delay(1000);
door = 0;
delay(1000);
DOpen();
flag =1;
doorpos = 0;
}
else
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print(" WRONG PASSWORD");
lcd.setCursor(0, 1);
lcd.print(" TRY AGAIN");
delay(500);
door = 1;
lcd.clear();
digitalWrite(redPin, LOW);
delay(100);
digitalWrite(redPin, HIGH);
delay (100);
digitalWrite(redPin, LOW); // signal for wrong password
delay(100);
digitalWrite(redPin, HIGH);
delay (100);
}
clearData();
}
}
void DoorProg()
{
DOOR_CLOSE:
if ((digitalRead(openend) == LOW)&&(flag == 1))
{
flag = 2;
Stop();
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("-DOOR IS READY-");
lcd.setCursor(0, 1);
lcd.print(" --TO CLOSE--");
delay(10000);
DClose();
sig = 1;
}
EMERGENCEY:
if((digitalRead(pir) == LOW)&& (flag == 2))
{
flag = 1;
Stop();
lcd.clear();
lcd.setCursor(0, 0);
lcd.print(" -ERROR! DOOR-");
lcd.setCursor(0, 1);
lcd.print(" --IS COVER--");
digitalWrite(PIRLED, HIGH);
delay(5000);
DOpen();
digitalWrite(PIRLED, LOW);
}
DOOR_CLOSEEND:
if ((digitalRead(closeend) == LOW)&&(flag == 2))
{
Stop();
lcd.clear();
for(int count = 3; count>=0; count --){
lcd.setCursor(6, 1);
lcd.print((String(count))+" s");
lcd.setCursor(0, 0);
lcd.print("-DOOR IS CLOSED-");
delay(1000);
ServoClose();
door = 1;
lcd.clear();
sig = 0;
flag = 0;
// digitalWrite(sw1, LOW);
}
}
}
void DOpen() {
//digitalWrite(ENA, HIGH);
digitalWrite(IN1, HIGH);
digitalWrite(IN2, LOW);
}
void DClose() {
//digitalWrite(ENA, HIGH);
digitalWrite(IN1, LOW);
digitalWrite(IN2, HIGH);
}
void Stop() {
digitalWrite(IN1, LOW);
digitalWrite(IN2, LOW);
}
void DEMSTOP()
{
if ((digitalRead(EMS) == LOW) && (doorpos == 0)&&(sig == 1)){
Stop();
doorpos = 1;
flag = 2;
delay(3000);
digitalWrite(lock, LOW);
lcd.clear();
}
if ((digitalRead(EMS) == HIGH) && (doorpos == 1) &&(flag == 2)){
// flag = 2;
doorpos = 0;
DClose();
// sig = 1;
digitalWrite(lock, HIGH);
// doorpos = 1;
}
}
void InputSig(){
lcd.clear();
lcd.print("DOOR IS OPENING");
delay(100);
ServoOpen();
delay(1000);
DOpen();
flag =1;
door = 0;
doorpos = 0;
}
/////////// PROJECT WRITTEN BY SUBHADIP BISWAS //////////
////////// THANK YOU ///////////