Introduction
In this project, we are going to build an RFID-based attendance system using Arduino nano.
The RFID-based attendance system is a very interesting project which can be used in different places like Schools, colleges And Companies.
The RFID-based attendance management system can be designed using Different types of microcontrollers like Arduino Nano, AVR, PIC Controller And Raspberry Pi etc.
The RFID Attendance system is based on some simple concepts we store RFID tag Numbers in a code. When the person put the correct RFID Card in our system, RFID Reader Read the Tag. His Time Arrival time will be stored on the system. when we scan the RFID Card again. the system will display the leaving time & is find out the total working time Hours.
Here We Also Chek More Attendance System Projects
Our Project Features
- Display the current time and date on the 20×4 LCD Display along with an option for the menu.
- Save Arrival Time and Leaving Time Details of an Arduino EEPROM.
- Find Out the total working hours of all users & Provide Options in the Menu for Retrieving it.
Bill of Material
S.N | Component | Quantity | Link To Buy |
1 | Arduino nano | 1 | |
2 | 20x4 LCD Display | 1 | |
3 | EM-18 Rfid Module | 1 | |
4 | DS3231 RTC Module | 1 | |
5 | Push Button | 1 | |
6 | Red Led | 1 | |
7 | Green Led | 1 | |
8 | Buzzer | 1 | |
9 | Zero PCB | 1 |
Component’s
Arduino Nano
20×4 LCD Display
EM-18 Reader Module
Buzzer
Push Button
LED
Zero PCB
Circuit Diagram
Here is a full circuit diagram of our projects, when we scan the card the name of the person is displayed in the 20×4 LCD Display.
the 20×4 LCD Display will be connected to the i2c Protocol and only 4 pin connection
- GND – GND
- VCC – 5V
- A4 – SDA
- A5 – SCL
And EM-18 Module is connected to the Tx Pin of The RFID module is connected to the Rx Pin of Arduino.
The Push Button Will be connected to the Pin Numbers A0, A1, A2, and A3 they used for selecting the menu and different options within the menu. The Arduino pins to which the buttons are connected are configured as the Input_Pullup within the program.
The RTC Module that we used here is DS3231 Module And they are also connected to the i2c Protocol, Like Pin numbers A4 and A5.
the red led and green led will indicate whether the person put in the correct card or not if the person put in the card at that time the green led will glow and if a person put in the wrong card that’s time the green led will glow .and they connected to the pin number 9 and 8.
we also connected to the small buzzer which indicates whether the card was put in the reader or not and they connected to pin number 7.
Source Code
before uploading the code fist some libraries required
- “LiquidCrysal_I2C.h”
- “EEPROM.h”
- “wire. h”
Now first We Find out the Rfid Tag Number With the help of the Code
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int count = 0; char card_no[12]; void setup() { Serial.begin(9600); } void loop() { if(Serial.available()) { count = 0; while(Serial.available() && count < 12) { card_no[count] = Serial.read(); count++; delay(5); } Serial.print(card_no); } } |
- Then we put the RFID Tag number in the code and then upload the final Code in A Arduino Nano
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char *rfid_id[] = { "400035056818", "", "", "", "", "", "", "", "", "" }; |
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#include <LiquidCrystal_I2C.h> #include <EEPROM.h> #include "Wire.h" #define I2C_ADDRESS 0x68 LiquidCrystal_I2C lcd(0x27, 20, 4); #define SW1 A0 //switch1 #define SW2 A1 //switch2 #define SW3 A2 //switch3 #define SW4 A3 //switch4 int buzzer = 7, red_led = 8, green_led = 9; char *rfid_id[] = { "400035056818", "", "", "", "", "", "", "", "", "" }; //rfid Data char *names[] = { "prateek", "", "", "", "", "", "", "", "", "" }; //Name define int presence[10]; long pm = 0; int i = 0, j = 0, presentNum = 0; int decToBcd(int val) { return ((val / 10 * 16) + (val % 10)); } int bcdToDec(int val) { return ((val / 16 * 10) + (val % 16)); } int second, minute, hour, dayOfWeek, dayOfMonth, month, year; int S = 0, M = 0, H = 0, DOW = 0, DOM = 0, MONTH = 0, YEAR = 0; int Min = 0, Hour = 0, totMin = 0, totHour = 0; void setup() { Wire.begin(); Serial.begin(9600); lcd.init(); lcd.backlight(); lcd.clear(); //setTime(00,30,10,6,5,9,17); pinMode(buzzer, OUTPUT); pinMode(red_led, OUTPUT); pinMode(green_led, OUTPUT); pinMode(SW1, INPUT_PULLUP); pinMode(SW2, INPUT_PULLUP); pinMode(SW3, INPUT_PULLUP); pinMode(SW4, INPUT_PULLUP); presentNum = EEPROM.read(1000); for (i = 0; i < 10; i++) presence[i] = EEPROM.read(i); } void setTime(int second, int minute, int hour, int dayOfWeek, int dayOfMonth, int month, int year) { Wire.beginTransmission(I2C_ADDRESS); Wire.write(0); Wire.write(decToBcd(second)); Wire.write(decToBcd(minute)); Wire.write(decToBcd(hour)); Wire.write(decToBcd(dayOfWeek)); Wire.write(decToBcd(dayOfMonth)); Wire.write(decToBcd(month)); Wire.write(decToBcd(year)); Wire.endTransmission(); } void readTime(int *second, int *minute, int *hour, int *dayOfWeek, int *dayOfMonth, int *month, int *year) { Wire.beginTransmission(I2C_ADDRESS); Wire.write(0); Wire.endTransmission(); Wire.requestFrom(I2C_ADDRESS, 7); *second = bcdToDec(Wire.read() & 0x7f); *minute = bcdToDec(Wire.read()); *hour = bcdToDec(Wire.read() & 0x3f); *dayOfWeek = bcdToDec(Wire.read()); *dayOfMonth = bcdToDec(Wire.read()); *month = bcdToDec(Wire.read()); *year = bcdToDec(Wire.read()); } void displayTime() { int HOUR; readTime(&second, &minute, &hour, &dayOfWeek, &dayOfMonth, &month, &year); if (hour > 12) HOUR = hour - 12; else HOUR = hour; if (j < 2) { lcd.clear(); j++; } lcd.setCursor(1, 0); if (HOUR < 10) lcd.print("0"); lcd.print(HOUR); lcd.print(":"); if (minute < 10) lcd.print("0"); lcd.print(minute); lcd.print(":"); if (second < 10) lcd.print("0"); lcd.print(second); lcd.setCursor(4, 1); if (hour > 12) lcd.print("PM"); else lcd.print("AM"); lcd.setCursor(12, 0); if (dayOfMonth < 10) lcd.print("0"); lcd.print(dayOfMonth); lcd.print("/"); if (month < 10) lcd.print("0"); lcd.print(month); lcd.print("/"); lcd.print(year); lcd.print(" "); lcd.setCursor(11, 1); switch (dayOfWeek) { case 1: lcd.print(" Sunday "); break; case 2: lcd.print(" Monday "); break; case 3: lcd.print(" Tuesday "); break; case 4: lcd.print("Wednesday "); break; case 5: lcd.print(" Thursday "); break; case 6: lcd.print(" Friday "); break; case 7: lcd.print(" Saturday "); break; } } void conTime(int a, int b, int c) { int Hr; int h, m, s; h = EEPROM.read(a); m = EEPROM.read(b); s = EEPROM.read(c); if (h > 12) Hr = h - 12; else Hr = h; lcd.print(" "); if (Hr < 10) lcd.print("0"); lcd.print(Hr); lcd.print(":"); if (m < 10) lcd.print("0"); lcd.print(m); lcd.print(":"); if (s < 10) lcd.print("0"); lcd.print(s); if (h > 12) lcd.print(" PM"); else lcd.print(" AM"); } void loop() { int i; char response[12]; int ch; top: if (hour == 8 && minute == 30 && second == 0) { lcd.clear(); lcd.setCursor(2, 0); lcd.print(" Clearing"); lcd.setCursor(2, 1); lcd.print("Yesterday's data"); for (i = 0; i < 10; i++) { lcd.setCursor(4, 3); lcd.print(" "); delay(1000); lcd.setCursor(4, 3); lcd.print("Please Wait"); delay(1000); } lcd.clear(); lcd.setCursor(7, 1); lcd.print("CLEARED"); delay(1000); EEPROM.write(1000, 0); for (i = 0; i < 500; i++) EEPROM.write(i, 0); presentNum = EEPROM.read(1000); for (i = 0; i < 10; i++) presence[i] = EEPROM.read(i); j = 0; } displayTime(); lcd.setCursor(0, 3); lcd.print(" Press 1 for menu "); if (digitalRead(SW1) == 0) { lcd.clear(); lcd.setCursor(0, 0); lcd.print(" 1. View attendance "); lcd.setCursor(0, 1); lcd.print(" 2. View all"); lcd.setCursor(0, 2); lcd.print(" 3. Clear all"); lcd.setCursor(0, 3); lcd.print(" 4. Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW2) == HIGH && digitalRead(SW3) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW1) == LOW) //View attendance { top1: lcd.clear(); lcd.setCursor(0, 0); lcd.print("Total staffs - "); lcd.print(10); presentNum = EEPROM.read(1000); lcd.setCursor(0, 1); lcd.print("Staffs present - "); lcd.print(presentNum); lcd.setCursor(0, 3); lcd.print("1.Detials"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } if (digitalRead(SW1) == LOW) { delay(500); for (i = 0; i < 10; i++) presence[i] = EEPROM.read(i); if (presentNum == 0) { lcd.clear(); lcd.setCursor(2, 1); lcd.print("No One Is Present"); delay(2000); } lcd.clear(); if (presence[0] == 1 || presence[0] == 2) { lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[0]); lcd.setCursor(0, 1); // lcd.print("Arrive -"); conTime(300, 301, 302); lcd.setCursor(0, 2); lcd.print("Depart -"); if (presence[0] == 2) conTime(303, 304, 305); lcd.setCursor(0, 3); //lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } if (presence[1] == 1 || presence[1] == 2) { lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[1]); lcd.setCursor(0, 1); lcd.print("Arrive -"); conTime(310, 311, 312); lcd.setCursor(0, 2); lcd.print("Depart -"); if (presence[1] == 2) conTime(313, 314, 315); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } if (presence[2] == 1 || presence[2] == 2) { lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[2]); lcd.setCursor(0, 1); lcd.print("Arrive -"); conTime(320, 321, 322); lcd.setCursor(0, 2); lcd.print("Depart -"); if (presence[2] == 2) conTime(323, 324, 325); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } if (presence[3] == 1 || presence[3] == 2) { lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[3]); lcd.setCursor(0, 1); lcd.print("Arrive -"); conTime(330, 331, 332); lcd.setCursor(0, 2); lcd.print("Depart -"); if (presence[3] == 2) conTime(333, 334, 335); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); //while(digitalRead(SW1)==HIGH && digitalRead(SW4)==HIGH); if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } if (presence[4] == 1 || presence[4] == 2) { lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[4]); lcd.setCursor(0, 1); lcd.print("Arrive -"); //conTime(340,341,342); lcd.setCursor(0, 2); lcd.print("Depart -"); if (presence[4] == 2) conTime(343, 344, 345); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } if (presence[5] == 1 || presence[5] == 2) { lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[5]); lcd.setCursor(0, 1); lcd.print("Arrive -"); conTime(350, 351, 352); lcd.setCursor(0, 2); lcd.print("Depart -"); if (presence[5] == 2) conTime(353, 354, 355); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } if (presence[6] == 1 || presence[6] == 2) { lcd.clear(); lcd.setCursor(5, 0); lcd.print(names[6]); lcd.setCursor(0, 1); lcd.print("Arrive -"); conTime(360, 361, 362); lcd.setCursor(0, 2); lcd.print("Depart -"); if (presence[6] == 2) conTime(363, 364, 365); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } if (presence[7] == 1 || presence[7] == 2) { lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[7]); lcd.setCursor(0, 1); lcd.print("Arrive -"); conTime(370, 371, 372); lcd.setCursor(0, 2); lcd.print("Depart -"); if (presence[7] == 2) conTime(373, 374, 375); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } if (presence[8] == 1 || presence[8] == 2) { lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[8]); lcd.setCursor(0, 1); lcd.print("Arrive -"); conTime(380, 381, 382); lcd.setCursor(0, 2); lcd.print("Depart -"); if (presence[8] == 2) conTime(383, 384, 385); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } if (presence[9] == 1 || presence[9] == 2) { lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[9]); lcd.setCursor(0, 1); lcd.print("Arrive -"); conTime(390, 391, 392); lcd.setCursor(0, 2); lcd.print("Depart -"); if (presence[9] == 2) conTime(393, 394, 395); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } delay(500); lcd.clear(); goto top1; } } if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } if (digitalRead(SW2) == LOW) { lcd.clear(); lcd.setCursor(3, 1); lcd.print(" Details From"); lcd.setCursor(5, 2); DOM = EEPROM.read(1010); if (DOM < 10) lcd.print("0"); lcd.print(DOM); lcd.print("/"); MONTH = EEPROM.read(1011); if (MONTH < 10) lcd.print("0"); lcd.print(MONTH); lcd.print("/"); YEAR = EEPROM.read(1012); lcd.print(YEAR); delay(3000); lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[0]); lcd.setCursor(0, 1); lcd.print("Status- "); if (presence[0] == 0) lcd.print("Absent"); if (presence[0] == 1) lcd.print("Present"); if (presence[0] == 2) lcd.print("Left"); lcd.setCursor(0, 2); lcd.print("Total Hours- "); lcd.print(EEPROM.read(900)); lcd.print(":"); lcd.print(EEPROM.read(901)); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[1]); lcd.setCursor(0, 1); lcd.print("Status- "); if (presence[1] == 0) lcd.print("Absent"); if (presence[1] == 1) lcd.print("Present"); if (presence[1] == 2) lcd.print("Left"); lcd.setCursor(0, 2); lcd.print("Total Hours- "); lcd.print(EEPROM.read(910)); lcd.print(":"); lcd.print(EEPROM.read(911)); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[2]); lcd.setCursor(0, 1); lcd.print("Status- "); if (presence[2] == 0) lcd.print("Absent"); if (presence[2] == 1) lcd.print("Present"); if (presence[2] == 2) lcd.print("Left"); lcd.setCursor(0, 2); lcd.print("Total Hours- "); lcd.print(EEPROM.read(920)); lcd.print(":"); lcd.print(EEPROM.read(921)); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[3]); lcd.setCursor(0, 1); lcd.print("Status- "); if (presence[3] == 0) lcd.print("Absent"); if (presence[3] == 1) lcd.print("Present"); if (presence[3] == 2) lcd.print("Left"); lcd.setCursor(0, 2); lcd.print("Total Hours- "); lcd.print(EEPROM.read(930)); lcd.print(":"); lcd.print(EEPROM.read(931)); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[4]); lcd.setCursor(0, 1); lcd.print("Status- "); if (presence[4] == 0) lcd.print("Absent"); if (presence[4] == 1) lcd.print("Present"); if (presence[4] == 2) lcd.print("Left"); lcd.setCursor(0, 2); lcd.print("Total Hours- "); lcd.print(EEPROM.read(940)); lcd.print(":"); lcd.print(EEPROM.read(941)); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[5]); lcd.setCursor(0, 1); lcd.print("Status- "); if (presence[5] == 0) lcd.print("Absent"); if (presence[5] == 1) lcd.print("Present"); if (presence[5] == 2) lcd.print("Left"); lcd.setCursor(0, 2); lcd.print("Total Hours- "); lcd.print(EEPROM.read(950)); lcd.print(":"); lcd.print(EEPROM.read(951)); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } lcd.clear(); lcd.setCursor(5, 0); lcd.print(names[6]); lcd.setCursor(0, 1); lcd.print("Status- "); if (presence[6] == 0) lcd.print("Absent"); if (presence[6] == 1) lcd.print("Present"); if (presence[6] == 2) lcd.print("Left"); lcd.setCursor(0, 2); lcd.print("Total Hours- "); lcd.print(EEPROM.read(960)); lcd.print(":"); lcd.print(EEPROM.read(961)); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[7]); lcd.setCursor(0, 1); lcd.print("Status- "); if (presence[7] == 0) lcd.print("Absent"); if (presence[7] == 1) lcd.print("Present"); if (presence[7] == 2) lcd.print("Left"); lcd.setCursor(0, 2); lcd.print("Total Hours- "); lcd.print(EEPROM.read(970)); lcd.print(":"); lcd.print(EEPROM.read(971)); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[8]); lcd.setCursor(0, 1); lcd.print("Status- "); if (presence[8] == 0) lcd.print("Absent"); if (presence[8] == 1) lcd.print("Present"); if (presence[8] == 2) lcd.print("Left"); lcd.setCursor(0, 2); lcd.print("Total Hours- "); lcd.print(EEPROM.read(980)); lcd.print(":"); lcd.print(EEPROM.read(981)); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } lcd.clear(); lcd.setCursor(7, 0); lcd.print(names[9]); lcd.setCursor(0, 1); lcd.print("Status- "); if (presence[9] == 0) lcd.print("Absent"); if (presence[9] == 1) lcd.print("Present"); if (presence[9] == 2) lcd.print("Left"); lcd.setCursor(0, 2); lcd.print("Total Hours- "); lcd.print(EEPROM.read(990)); lcd.print(":"); lcd.print(EEPROM.read(991)); lcd.setCursor(0, 3); lcd.print("1.Next"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; delay(500); lcd.clear(); goto top; } if (digitalRead(SW3) == LOW) { lcd.clear(); lcd.setCursor(5, 1); lcd.print("SHOW ADMIN ID"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); while (!Serial.available()) { if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } if (Serial.available() > 0) { i = 0; do { while (Serial.available() <= 0) ; response[i] = Serial.read(); Serial.print(response[i]); i++; } while (i < 12); response[i] = '\0'; if (strcmp(response, rfid_id[4]) == 0) //User1 rfid received { lcd.clear(); lcd.setCursor(0, 0); lcd.print(" ACCESS GRANTED "); lcd.setCursor(0, 1); lcd.print(" ADMIN - JOJO JOSON"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); lcd.setCursor(0, 3); lcd.print("1.Clear"); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW1) == HIGH && digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { delay(500); lcd.clear(); goto top; } if (digitalRead(SW1) == LOW) { lcd.clear(); lcd.setCursor(0, 0); lcd.print(" ALL CLEARED! "); analogWrite(buzzer, 50); delay(1500); digitalWrite(buzzer, LOW); delay(1500); //Clear attendance lcd.setCursor(0, 1); lcd.print("New Date - "); lcd.setCursor(12, 1); if (dayOfMonth < 10) lcd.print("0"); lcd.print(dayOfMonth); lcd.print("/"); if (month < 10) lcd.print("0"); lcd.print(month); lcd.print("/"); lcd.print(year); lcd.print(" "); for (i = 0; i < 1023; i++) EEPROM.write(i, 0); EEPROM.write(1010, dayOfMonth); EEPROM.write(1011, month); EEPROM.write(1012, year); for (i = 0; i < 10; i++) presence[i] = EEPROM.read(i); presentNum = EEPROM.read(1000); lcd.setCursor(0, 3); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } } else { lcd.clear(); lcd.setCursor(0, 1); lcd.print(" ACCESS DENIED "); lcd.setCursor(0, 2); lcd.print(" INVALID ID "); analogWrite(buzzer, 50); digitalWrite(red_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(red_led, LOW); lcd.setCursor(0, 3); lcd.setCursor(11, 3); lcd.print("4.Go Back"); delay(500); while (digitalRead(SW4) == HIGH) ; if (digitalRead(SW4) == LOW) { lcd.clear(); goto top; } } } } } if (Serial.available() > 0) { i = 0; do { while (Serial.available() <= 0) ; response[i] = Serial.read(); Serial.print(response[i]); i++; } while (i < 12); response[i] = '\0'; if (strcmp(response, rfid_id[0]) == 0) //User1 rfid received { if (presence[0] == 0 || presence[0] == 2) { presence[0] = 1; lcd.clear(); lcd.setCursor(7, 0); lcd.print("WELCOME"); lcd.setCursor(7, 2); lcd.print(names[0]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(300, hour); EEPROM.write(301, minute); EEPROM.write(302, second); presentNum++; EEPROM.write(1000, presentNum); lcd.clear(); } else { presence[0] = 2; lcd.clear(); lcd.setCursor(7, 0); lcd.print("SEE YOU"); lcd.setCursor(7, 2); lcd.print(names[0]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(303, hour); EEPROM.write(304, minute); EEPROM.write(305, second); presentNum--; EEPROM.write(1000, presentNum); H = EEPROM.read(300); M = EEPROM.read(301); Hour = hour - H; if (minute < M) { Hour--; Min = (60 - (M - minute)); } if (minute >= M) { Min = minute - M; } totHour = EEPROM.read(900); totMin = EEPROM.read(901); totMin = totMin + Min; if (totMin >= 60) { Hour++; totMin = totMin - 60; } totHour = totHour + Hour; EEPROM.write(900, totHour); EEPROM.write(901, totMin); lcd.clear(); } } else if (strcmp(response, rfid_id[1]) == 0) //User1 rfid received { if (presence[1] == 0 || presence[1] == 2) { presence[1] = 1; lcd.clear(); lcd.setCursor(7, 0); lcd.print("WELCOME"); lcd.setCursor(7, 2); lcd.print(names[1]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(310, hour); EEPROM.write(311, minute); EEPROM.write(312, second); presentNum++; EEPROM.write(1000, presentNum); lcd.clear(); } else { presence[1] = 2; lcd.clear(); lcd.setCursor(7, 0); lcd.print("SEE YOU"); lcd.setCursor(7, 2); lcd.print(names[1]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(313, hour); EEPROM.write(314, minute); EEPROM.write(315, second); presentNum--; EEPROM.write(1000, presentNum); lcd.clear(); H = EEPROM.read(310); M = EEPROM.read(311); Hour = hour - H; if (minute < M) { Hour--; Min = (60 - (M - minute)); } if (minute >= M) { Min = minute - M; } totHour = EEPROM.read(910); totMin = EEPROM.read(911); totMin = totMin + Min; if (totMin >= 60) { Hour++; totMin = totMin - 60; } totHour = totHour + Hour; EEPROM.write(910, totHour); EEPROM.write(911, totMin); lcd.clear(); } } else if (strcmp(response, rfid_id[2]) == 0) //User1 rfid received { if (presence[2] == 0 || presence[2] == 2) { presence[2] = 1; lcd.clear(); lcd.setCursor(7, 0); lcd.print("WELCOME"); lcd.setCursor(7, 2); lcd.print(names[2]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(320, hour); EEPROM.write(321, minute); EEPROM.write(322, second); presentNum++; EEPROM.write(1000, presentNum); lcd.clear(); } else { presence[2] = 2; lcd.clear(); lcd.setCursor(7, 0); lcd.print("SEE YOU"); lcd.setCursor(7, 2); lcd.print(names[2]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(323, hour); EEPROM.write(324, minute); EEPROM.write(325, second); presentNum--; EEPROM.write(1000, presentNum); H = EEPROM.read(320); M = EEPROM.read(321); Hour = hour - H; if (minute < M) { Hour--; Min = (60 - (M - minute)); } if (minute >= M) { Min = minute - M; } totHour = EEPROM.read(920); totMin = EEPROM.read(921); totMin = totMin + Min; if (totMin >= 60) { Hour++; totMin = totMin - 60; } totHour = totHour + Hour; EEPROM.write(920, totHour); EEPROM.write(921, totMin); lcd.clear(); } } else if (strcmp(response, rfid_id[3]) == 0) //User1 rfid received { if (presence[3] == 0 || presence[3] == 2) { presence[3] = 1; lcd.clear(); lcd.setCursor(7, 0); lcd.print("WELCOME"); lcd.setCursor(7, 2); lcd.print(names[3]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(330, hour); EEPROM.write(331, minute); EEPROM.write(332, second); presentNum++; EEPROM.write(1000, presentNum); lcd.clear(); } else { presence[3] = 2; lcd.clear(); lcd.setCursor(7, 0); lcd.print("SEE YOU"); lcd.setCursor(7, 2); lcd.print(names[3]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(333, hour); EEPROM.write(334, minute); EEPROM.write(335, second); presentNum--; EEPROM.write(1000, presentNum); H = EEPROM.read(330); M = EEPROM.read(331); Hour = hour - H; if (minute < M) { Hour--; Min = (60 - (M - minute)); } if (minute >= M) { Min = minute - M; } totHour = EEPROM.read(930); totMin = EEPROM.read(931); totMin = totMin + Min; if (totMin >= 60) { Hour++; totMin = totMin - 60; } totHour = totHour + Hour; EEPROM.write(930, totHour); EEPROM.write(931, totMin); lcd.clear(); } } else if (strcmp(response, rfid_id[4]) == 0) //User1 rfid received { if (presence[4] == 0 || presence[4] == 2) { presence[4] = 1; lcd.clear(); lcd.setCursor(7, 0); lcd.print("WELCOME"); lcd.setCursor(7, 2); lcd.print(names[4]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(340, hour); EEPROM.write(341, minute); EEPROM.write(342, second); presentNum++; EEPROM.write(1000, presentNum); lcd.clear(); } else { presence[4] = 2; lcd.clear(); lcd.setCursor(7, 0); lcd.print("SEE YOU"); lcd.setCursor(7, 2); lcd.print(names[4]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(343, hour); EEPROM.write(344, minute); EEPROM.write(345, second); presentNum--; EEPROM.write(1000, presentNum); H = EEPROM.read(340); M = EEPROM.read(341); Hour = hour - H; if (minute < M) { Hour--; Min = (60 - (M - minute)); } if (minute >= M) { Min = minute - M; } totHour = EEPROM.read(940); totMin = EEPROM.read(941); totMin = totMin + Min; if (totMin >= 60) { Hour++; totMin = totMin - 60; } totHour = totHour + Hour; EEPROM.write(940, totHour); EEPROM.write(941, totMin); lcd.clear(); } } else if (strcmp(response, rfid_id[5]) == 0) //User1 rfid received { if (presence[5] == 0 || presence[5] == 2) { presence[5] = 1; lcd.clear(); lcd.setCursor(7, 0); lcd.print("WELCOME"); lcd.setCursor(7, 2); lcd.print(names[5]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(350, hour); EEPROM.write(351, minute); EEPROM.write(352, second); presentNum++; EEPROM.write(1000, presentNum); lcd.clear(); } else { presence[5] = 2; lcd.clear(); lcd.setCursor(7, 0); lcd.print("SEE YOU"); lcd.setCursor(7, 2); lcd.print(names[5]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(353, hour); EEPROM.write(354, minute); EEPROM.write(355, second); presentNum--; EEPROM.write(1000, presentNum); H = EEPROM.read(350); M = EEPROM.read(351); Hour = hour - H; if (minute < M) { Hour--; Min = (60 - (M - minute)); } if (minute >= M) { Min = minute - M; } totHour = EEPROM.read(950); totMin = EEPROM.read(951); totMin = totMin + Min; if (totMin >= 60) { Hour++; totMin = totMin - 60; } totHour = totHour + Hour; EEPROM.write(950, totHour); EEPROM.write(951, totMin); lcd.clear(); } } else if (strcmp(response, rfid_id[6]) == 0) //User1 rfid received { if (presence[6] == 0 || presence[6] == 2) { presence[6] = 1; lcd.clear(); lcd.setCursor(7, 0); lcd.print("WELCOME"); lcd.setCursor(5, 2); lcd.print(names[6]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(360, hour); EEPROM.write(361, minute); EEPROM.write(362, second); presentNum++; EEPROM.write(1000, presentNum); lcd.clear(); } else { presence[6] = 2; lcd.clear(); lcd.setCursor(7, 0); lcd.print("SEE YOU"); lcd.setCursor(5, 2); lcd.print(names[6]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(363, hour); EEPROM.write(364, minute); EEPROM.write(365, second); presentNum--; EEPROM.write(1000, presentNum); H = EEPROM.read(360); M = EEPROM.read(361); Hour = hour - H; if (minute < M) { Hour--; Min = (60 - (M - minute)); } if (minute >= M) { Min = minute - M; } totHour = EEPROM.read(960); totMin = EEPROM.read(961); totMin = totMin + Min; if (totMin >= 60) { Hour++; totMin = totMin - 60; } totHour = totHour + Hour; EEPROM.write(960, totHour); EEPROM.write(961, totMin); lcd.clear(); } } else if (strcmp(response, rfid_id[7]) == 0) //User1 rfid received { if (presence[7] == 0 || presence[7] == 2) { presence[7] = 1; lcd.clear(); lcd.setCursor(7, 0); lcd.print("WELCOME"); lcd.setCursor(7, 2); lcd.print(names[7]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(370, hour); EEPROM.write(371, minute); EEPROM.write(372, second); presentNum++; EEPROM.write(1000, presentNum); lcd.clear(); } else { presence[7] = 2; lcd.clear(); lcd.setCursor(7, 0); lcd.print("SEE YOU"); lcd.setCursor(7, 2); lcd.print(names[7]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(373, hour); EEPROM.write(374, minute); EEPROM.write(375, second); presentNum--; EEPROM.write(1000, presentNum); H = EEPROM.read(370); M = EEPROM.read(371); Hour = hour - H; if (minute < M) { Hour--; Min = (60 - (M - minute)); } if (minute >= M) { Min = minute - M; } totHour = EEPROM.read(970); totMin = EEPROM.read(971); totMin = totMin + Min; if (totMin >= 60) { Hour++; totMin = totMin - 60; } totHour = totHour + Hour; EEPROM.write(970, totHour); EEPROM.write(971, totMin); lcd.clear(); } } else if (strcmp(response, rfid_id[8]) == 0) //User1 rfid received { if (presence[8] == 0 || presence[8] == 2) { presence[8] = 1; lcd.clear(); lcd.setCursor(7, 0); lcd.print("WELCOME"); lcd.setCursor(7, 2); lcd.print(names[8]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(380, hour); EEPROM.write(381, minute); EEPROM.write(382, second); presentNum++; EEPROM.write(1000, presentNum); lcd.clear(); } else { presence[8] = 2; lcd.clear(); lcd.setCursor(7, 0); lcd.print("SEE YOU"); lcd.setCursor(7, 2); lcd.print(names[8]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(383, hour); EEPROM.write(384, minute); EEPROM.write(385, second); presentNum--; EEPROM.write(1000, presentNum); H = EEPROM.read(380); M = EEPROM.read(381); Hour = hour - H; if (minute < M) { Hour--; Min = (60 - (M - minute)); } if (minute >= M) { Min = minute - M; } totHour = EEPROM.read(980); totMin = EEPROM.read(981); totMin = totMin + Min; if (totMin >= 60) { Hour++; totMin = totMin - 60; } totHour = totHour + Hour; EEPROM.write(980, totHour); EEPROM.write(981, totMin); lcd.clear(); } } else if (strcmp(response, rfid_id[9]) == 0) //User1 rfid received { if (presence[9] == 0 || presence[9] == 2) { presence[9] = 1; lcd.clear(); lcd.setCursor(7, 0); lcd.print("WELCOME"); lcd.setCursor(7, 2); lcd.print(names[9]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(390, hour); EEPROM.write(391, minute); EEPROM.write(392, second); presentNum++; EEPROM.write(1000, presentNum); lcd.clear(); } else { presence[9] = 2; lcd.clear(); lcd.setCursor(7, 0); lcd.print("SEE YOU"); lcd.setCursor(7, 2); lcd.print(names[9]); lcd.print(" !"); analogWrite(buzzer, 50); digitalWrite(green_led, HIGH); delay(1000); digitalWrite(buzzer, LOW); digitalWrite(green_led, LOW); delay(3000); EEPROM.write(393, hour); EEPROM.write(394, minute); EEPROM.write(395, second); presentNum--; EEPROM.write(1000, presentNum); H = EEPROM.read(390); M = EEPROM.read(391); Hour = hour - H; if (minute < M) { Hour--; Min = (60 - (M - minute)); } if (minute >= M) { Min = minute - M; } totHour = EEPROM.read(990); totMin = EEPROM.read(991); totMin = totMin + Min; if (totMin >= 60) { Hour++; totMin = totMin - 60; } totHour = totHour + Hour; EEPROM.write(990, totHour); EEPROM.write(991, totMin); lcd.clear(); } } EEPROM.write(1000, presentNum); for (i = 0; i < 10; i++) EEPROM.write(i, presence[i]); } } |
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