Overview
In this project, we have designed RFID Based Attendance System using Arduino. EM-18 RFID Reader is a very simple yet effective module. It is an RFID module and is used for scanning RFID cards. It’s a new technology and is expanding day by day. Nowadays it is extensively used in offices where employees are issued an RFID card and their attendance is marked when they touch their card to the RFID reader. We have seen it in many movies that when someone places one’s card over some machine then the door opens or closes. In short, RFID Technology a new emerging technology that is quite useful.
In this project, we have interfaced RFID EM-18 Module with Arduino, RTC Module DS3231, and 20*4 LCD display. RFID Based Attendance System is a wonderful project for final year electronics & electrical students.
Some of the other versions of the RFID Attendance System is given below. You can follow these links too:
1. RFID RC522 Based Attendance System Using Arduino with Data Logger
You can also check the advanced version of the same project:
IoT Based RFID Attendance System Using Arduino ESP8266 & Adafruit.io
Components Required:
To design RFID Based Attendance System using Arduino, we require the following components:
| S.N. | Components Name | Quantity | Purchase Links |
|---|---|---|---|
| 1 | Arduino UNO Board | 1 | Amazon | AliExpress |
| 2 | EM-18 RFID Module | 1 | Amazon | AliExpress |
| 3 | 20X4 LCD Display | 1 | Amazon | AliExpress |
| 4 | Potentiometer 10K | 1 | Amazon | AliExpress |
| 5 | 125Khz RFID Cards | 1 | Amazon | AliExpress |
| 6 | RTC Module DS3231 | 1 | Amazon | AliExpress |
| 7 | Buzzer 5V | 1 | Amazon | AliExpress |
| 8 | LED 5mm Any Color | 2 | Amazon | AliExpress |
| 9 | Push Button Switch | 4 | Amazon | AliExpress |
| 10 | Connecting Wires | 20 | Amazon | AliExpress |
| 11 | Breadboard | 1 | Amazon | AliExpress |
Block Diagram:
This is the block diagram of our project RFID Based Attendance System using Arduino, RTC & LCD Display. Here Arduino UNO acts as a central processor for controlling all other components as input/output unit.
We have used the 5-volt power supply to power all the components used in this project. RFID Reader module is interfaced with Arduino to read the data from the RFID card/tag. Real-Time Clock (RTC) Module DS3231 is used to display the current time and date on the LCD as well as arriving and leaving time of the users. LCD displays every output like current date & time, information of users, no of staff present or absent, and menu options from 1 to 4.
Red & Green LED is used for the indication of arriving and leaving. Similarly, the buzzer produces sound whenever the interrupt is detected. The very important part of this block diagram is the EEPROM part. EEPROM stands for Electrically Erasable Programmable Read-Only Memory. It stores the data whenever the users swap the card over the RFID reader.
Circuit Diagram: RFID Based Attendance System using Arduino & LCD Display
Working of the RFID System
Functioning Principle of RFID Device is explained below:
• RFID (radio frequency identification) is a technique facilitating the identification of any product or item without the requirement of any line of sight between transponder and reader.
• RFID Structure is continuously composed of 2 main hardware components. The transponder is located on the product to be scanned and the reader can be either just a reader or a read & write device, depending upon the system design, technology employed, and the requirement. The RFID reader characteristically comprises a radio frequency module, a controlling unit for configurations, a monitor, and an antenna to investigate the RFID tags. In addition, a number of RFID readers are in-built with an extra interface allowing them to forward the data received to another system (control system or PC).
• RFID Tag – The actual data-carrying tool of an RFID structure, in general, comprise of an antenna (coupling element) and an electronic microchip.
Working of RFID Based Attendance System using Arduino:
In this project, we have designed an RFID based attendance system using Arduino. First, we store a set of RFID card data in our system. You can store any number of RFID data, but we have only stored 10 RFID tag numbers.
When the person with the correct RFID card comes & swipes his RFID card, his arrival time will be stored on the system using the EEPROM command displaying a “welcome” message on LCD. When the same person swipes his RFID card for the second time, the system will save it as his leaving time displaying “See You”. The interval between first card swap and second card swap is the total working hours that are stored as data.
Source Code/Program:
Before uploading the code to the Arduino board, edit the program else you won’t be able to get the desired result. Make sure to replace the RFID number with that present in your RFID tag. Also, change the timetable, and date in order to get the present time, date & day. Change the admin name and assign a particular admin name so that the admin can clear data.
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#include <LiquidCrystal.h> #include <EEPROM.h> #include "Wire.h" #define I2C_ADDRESS 0x68 LiquidCrystal lcd(13,12,11,10,9,8); #define SW1 A0 #define SW2 A1 #define SW3 A2 #define SW4 A3 int buzzer=6,red_led=5,green_led=4; char* rfid_id[]={"1900E54250EE","1900E561BC21","18003D312034","14000AD871B7","000003D4EE39","02001047EABF","0200108156C5","0200108040D2","18003D858929","020010811182"}; char* names[]={"LOKESH","NANCY","ALEX","KEVIN","JOJO","PRINCE","TRACY","JIMMY","DANIEL","LAURA"}; 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.begin(20,4); lcd.clear(); setTime(00,27,15,03,22,05,18); 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]); } } |
To understand the full working and how to deal with the project watch the video tutorial below. Also to learn about code editing from the same video below.
Video Preview & Tutorial:
RFID Based Attendance System Using Arduino
3 Comments
sir. your coding was awesome and i need some clarification regarding adding persons.we tried to change the code for adding persons but we can’t. can you please give any idea about this?
time automaticaly reset when arduino power cut , what can i do
First upload this code with correct time ,and after that use ‘ // ‘ symbol before setTime and again upload this code