Cara Membuat Sistem Absensi Berbasis RFID

Cara Membuat Sistem Absensi Berbasis RFID

Dalam posting ini kita akan membangun sistem absensi berbasis RFID, yang dapat mencatat kehadiran 12 siswa / staf untuk jangka waktu tertentu dan sistem ini dapat merekam hingga 255 kehadiran per orang.



Apa itu Sistem Absensi RFID

Kami tidak memerlukan pengenalan apa pun tentang sistem absensi berbasis RFID, ini digunakan di perguruan tinggi, kantor, perpustakaan untuk mengetahui berapa kali seseorang atau berapa banyak orang yang masuk dan keluar pada jam berapa.

Dalam proyek ini kami akan membangun sistem absensi berbasis RFID yang paling sederhana yang tidak menyulitkan proyek.





Dalam proyek ini kami akan menggunakan modul RTC, yang digunakan untuk mengaktifkan dan menonaktifkan sistem kehadiran dalam jangka waktu tertentu, sehingga kami dapat mencegah pendatang yang terlambat.

Modul RFID “RFID-RC522” yang dapat melakukan operasi baca dan tulis pada tag RFID berbasis NXP. NXP adalah produsen utama tag RFID di dunia dan kami bisa mendapatkannya di toko online dan offline dengan mudah.



Sebuah layar LCD 16 x 2 digunakan untuk menampilkan informasi seperti waktu, tanggal, jumlah kehadiran, dll.

Dan akhirnya papan Arduino digunakan yaitu otak proyek . Anda dapat memilih versi papan apa pun.

Sekarang mari beralih ke diagram skematik:

Koneksi Arduino ke LCD:

Cukup hubungkan kabel sesuai diagram di bawah ini dan gunakan potensiometer 10 kilo ohm untuk menyesuaikan kontras.

Koneksi modul Arduino ke RFID:

Modul RFID harus bertenaga 3.3V dan 5V dapat merusak komponen on board. Modul RFID-RC522 bekerja pada protokol komunikasi SPI saat berkomunikasi dengan Arduino.

Sisa sirkuit:

Arduino dapat didukung dari adaptor dinding 9V. Ada bel dan LED untuk menunjukkan bahwa kartu terdeteksi. Ada 4 tombol yang disediakan untuk melihat kehadiran, membersihkan memori dan tombol “ya” dan “tidak”.

Itu menyimpulkan bagian perangkat keras.

Silakan unduh file perpustakaan berikut:

Tautan1: github.com/PaulStoffregen/DS1307RTC

Tautan2: github.com/PaulStoffregen/Time

Tautan3: github.com/miguelbalboa/rfid.git

Sekarang kita harus mengatur waktu yang tepat untuk modul RTC untuk melakukan ini, ikuti langkah-langkah di bawah ini dengan pengaturan perangkat keras yang lengkap.

  • Buka Arduino IDE.
  • Arahkan ke File> Contoh> DS1307RTC> SetTime.
  • Unggah kodenya.

Setelah kode diunggah ke Arduino, buka monitor serial . Sekarang RTC disinkronkan dengan waktu komputer Anda.

Sekarang Anda harus menemukan UID atau nomor identifikasi unik dari semua 12 kartu / tag RFID. Untuk menemukan UID, unggah kode di bawah ini dan buka monitor serial.

//-------------------------Program developed by R.Girish------------------//
#include
#include
#define SS_PIN 10
#define RST_PIN 9
MFRC522 rfid(SS_PIN, RST_PIN)
MFRC522::MIFARE_Key key
void setup()
{
Serial.begin(9600)
SPI.begin()
rfid.PCD_Init()
}
void loop() {
if ( ! rfid.PICC_IsNewCardPresent())
return
if ( ! rfid.PICC_ReadCardSerial())
return
MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak)
if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI &&
piccType != MFRC522::PICC_TYPE_MIFARE_1K &&
piccType != MFRC522::PICC_TYPE_MIFARE_4K)
{
Serial.println(F('Your tag is not of type MIFARE Classic, your card/tag can't be read :('))
return
}
String StrID = ''
for (byte i = 0 i <4 i ++)
{
StrID +=
(rfid.uid.uidByte[i] <0x10 ? '0' : '') +
String(rfid.uid.uidByte[i], HEX) +
(i != 3 ? ':' : '' )
}
StrID.toUpperCase()
Serial.print('Your card's UID: ')
Serial.println(StrID)
rfid.PICC_HaltA ()
rfid.PCD_StopCrypto1 ()
}
//-------------------------Program developed by R.Girish------------------//

  • Buka monitor serial.
  • Pindai kartu / tag pada modul RFID.
  • Sekarang Anda akan melihat beberapa kode heksadesimal untuk setiap kartu.
  • Tuliskan, kami akan memasukkan data tersebut di program berikutnya.

Program utama:

//-------------------------Program developed by R.Girish------------------//
#include
#include
#include
#include
#include
#include
#include
#define SS_PIN 10
#define RST_PIN 9
MFRC522 rfid(SS_PIN, RST_PIN)
MFRC522::MIFARE_Key key
const int rs = 7
const int en = 6
const int d4 = 5
const int d5 = 4
const int d6 = 3
const int d7 = 2
const int LED = 8
boolean ok = false
LiquidCrystal lcd(rs, en, d4, d5, d6, d7)
const int list = A0
const int CLM = A1
const int yes = A2
const int no = A3
int H = 0
int M = 0
int S = 0
int i = 0
int ID1 = 0
int ID2 = 0
int ID3 = 0
int ID4 = 0
int ID5 = 0
int ID6 = 0
int ID7 = 0
int ID8 = 0
int ID9 = 0
int ID10 = 0
int ID11 = 0
int ID12 = 0
char UID[] = ''
// **************************** SETTINGS ************************ //
// ------ From -------- // (Set the time range for attendance in hours 0 to 23)
int h = 21 // Hrs
int m = 00 // Min
// ------- To ------- //
int h1 = 21 // Hrs
int m1 = 50 //Min
// ---------------- SET UIDs ----------------- //
char UID1[] = 'F6:97:ED:70'
char UID2[] = '45:B8:AF:C0'
char UID3[] = '15:9F:A5:C0'
char UID4[] = 'C5:E4:AD:C0'
char UID5[] = '65:1D:AF:C0'
char UID6[] = '45:8A:AF:C0'
char UID7[] = '15:9F:A4:C0'
char UID8[] = '55:CB:AF:C0'
char UID9[] = '65:7D:AF:C0'
char UID10[] = '05:2C:AA:04'
char UID11[] = '55:7D:AA:04'
char UID12[] = 'BD:8A:16:0B'
// -------------- NAMES -----------------------//
char Name1[] = 'Student1'
char Name2[] = 'Student2'
char Name3[] = 'Student3'
char Name4[] = 'Student4'
char Name5[] = 'Student5'
char Name6[] = 'Student6'
char Name7[] = 'Student7'
char Name8[] = 'Student8'
char Name9[] = 'Student9'
char Name10[] = 'Student10'
char Name11[] = 'Student11'
char Name12[] = 'Student12'
// ********************************************************** //
void setup()
{
Serial.begin(9600)
lcd.begin(16, 2)
SPI.begin()
rfid.PCD_Init()
pinMode(yes, INPUT)
pinMode(no, INPUT)
pinMode(list, INPUT)
pinMode(LED, OUTPUT)
pinMode(CLM, INPUT)
digitalWrite(CLM, HIGH)
digitalWrite(LED, LOW)
digitalWrite(yes, HIGH)
digitalWrite(no, HIGH)
digitalWrite(list, HIGH)
}
void loop()
{
if (digitalRead(list) == LOW)
{
Read_data()
}
if (digitalRead(CLM) == LOW)
{
clear_Memory()
}
tmElements_t tm
if (RTC.read(tm))
{
lcd.clear()
H = tm.Hour
M = tm.Minute
S = tm.Second
lcd.setCursor(0, 0)
lcd.print('TIME:')
lcd.print(tm.Hour)
lcd.print(':')
lcd.print(tm.Minute)
lcd.print(':')
lcd.print(tm.Second)
lcd.setCursor(0, 1)
lcd.print('DATE:')
lcd.print(tm.Day)
lcd.print('/')
lcd.print(tm.Month)
lcd.print('/')
lcd.print(tmYearToCalendar(tm.Year))
delay(1000)
} else {
if (RTC.chipPresent())
{
lcd.setCursor(0, 0)
lcd.print('RTC stopped!!!')
lcd.setCursor(0, 1)
lcd.print('Run SetTime code')
} else {
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Read error!')
lcd.setCursor(0, 1)
lcd.print('Check circuitry!')
}
}
if (H == h)
{
if (M == m)
{
ok = true
}
}
if (H == h1)
{
if (M == m1)
{
ok = false
}
}
if ( ! rfid.PICC_IsNewCardPresent())
return
if ( ! rfid.PICC_ReadCardSerial())
return
MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak)
if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI &&
piccType != MFRC522::PICC_TYPE_MIFARE_1K &&
piccType != MFRC522::PICC_TYPE_MIFARE_4K)
{
Serial.println(F('Your tag is not of type MIFARE Classic, your card/tag can't be read :('))
}
String StrID = ''
for (byte i = 0 i <4 i ++)
{
StrID +=
(rfid.uid.uidByte[i] <0x10 ? '0' : '') +
String(rfid.uid.uidByte[i], HEX) +
(i != 3 ? ':' : '' )
}
StrID.toUpperCase()
if (ok == false)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Attendance is')
lcd.setCursor(0, 1)
lcd.print('Closed.')
delay(1000)
}
if (ok)
{
//-----------------------------------//
if (StrID == UID1)
{
ID1 = EEPROM.read(1)
ID1 = ID1 + 1
if (ID1 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID1 != 256)
{
EEPROM.write(1, ID1)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
//-----------------------------------//
if (StrID == UID2)
{
ID2 = EEPROM.read(2)
ID2 = ID2 + 1
if (ID2 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID2 != 256)
{
EEPROM.write(2, ID2)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
//-----------------------------------//
if (StrID == UID3)
{
ID3 = EEPROM.read(3)
ID3 = ID3 + 1
if (ID3 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID3 != 256)
{
EEPROM.write(3, ID3)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
//-----------------------------------//
if (StrID == UID4)
{
ID4 = EEPROM.read(4)
ID4 = ID4 + 1
if (ID4 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID4 != 256)
{
EEPROM.write(4, ID4)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
//-----------------------------------//
if (StrID == UID5)
{
ID5 = EEPROM.read(5)
ID5 = ID5 + 1
if (ID5 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID5 != 256)
{
EEPROM.write(5, ID5)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
//-----------------------------------//
if (StrID == UID6)
{
ID6 = EEPROM.read(6)
ID6 = ID6 + 1
if (ID6 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID6 != 256)
{
EEPROM.write(6, ID6)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
//-----------------------------------//
if (StrID == UID7)
{
ID7 = EEPROM.read(7)
ID7 = ID7 + 1
if (ID7 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID7 != 256)
{
EEPROM.write(7, ID7)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
//-----------------------------------//
if (StrID == UID8)
{
ID8 = EEPROM.read(8)
ID8 = ID1 + 1
if (ID8 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID8 != 256)
{
EEPROM.write(8, ID8)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
//-----------------------------------//
if (StrID == UID9)
{
ID9 = EEPROM.read(9)
ID9 = ID9 + 1
if (ID9 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID9 != 256)
{
EEPROM.write(9, ID9)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
//-----------------------------------//
if (StrID == UID10)
{
ID10 = EEPROM.read(10)
ID10 = ID10 + 1
if (ID10 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID10 != 256)
{
EEPROM.write(10, ID10)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
//-----------------------------------//
if (StrID == UID11)
{
ID11 = EEPROM.read(11)
ID11 = ID11 + 1
if (ID11 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID11 != 256)
{
EEPROM.write(11, ID11)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
//-----------------------------------//
if (StrID == UID12)
{
ID12 = EEPROM.read(12)
ID12 = ID12 + 1
if (ID12 == 256)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Memory is Full')
lcd.setCursor(0, 1)
lcd.print('Please Clear All.')
for (i = 0 i <20 i++)
{
digitalWrite(LED, HIGH)
delay(100)
digitalWrite(LED, LOW)
delay(100)
}
i = 0
return
}
if (ID12 != 256)
{
EEPROM.write(12, ID12)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Your Attendance')
lcd.setCursor(0, 1)
lcd.print('Registered !!!')
digitalWrite(LED, HIGH)
delay(1000)
digitalWrite(LED, LOW)
return
}
}
if (StrID != UID1 || StrID != UID2 || StrID != UID3 || StrID != UID4
|| StrID != UID5 || StrID != UID6 || StrID != UID7 || StrID != UID8
|| StrID != UID9 || StrID != UID10 || StrID != UID11 || StrID != UID12)
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print('Unknown RFID')
lcd.setCursor(0, 1)
lcd.print('Card !!!')
for (i = 0 i <3 i++)
{
digitalWrite(LED, HIGH)
delay(200)
digitalWrite(LED, LOW)
delay(200)
}
}
rfid.PICC_HaltA ()
rfid.PCD_StopCrypto1()
}
}
void Read_data()
{
lcd.clear()
lcd.setCursor(0, 0)
lcd.print(Name1)
lcd.print(':')
lcd.print(EEPROM.read(1))
lcd.setCursor(0, 1)
lcd.print(Name2)
lcd.print(':')
lcd.print(EEPROM.read(2))
delay(2000)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print(Name3)
lcd.print(':')
lcd.print(EEPROM.read(3))
lcd.setCursor(0, 1)
lcd.print(Name4)
lcd.print(':')
lcd.print(EEPROM.read(4))
delay(2000)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print(Name5)
lcd.print(':')
lcd.print(EEPROM.read(5))
lcd.setCursor(0, 1)
lcd.print(Name6)
lcd.print(':')
lcd.print(EEPROM.read(6))
delay(2000)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print(Name7)
lcd.print(':')
lcd.print(EEPROM.read(7))
lcd.setCursor(0, 1)
lcd.print(Name8)
lcd.print(':')
lcd.print(EEPROM.read(8))
delay(2000)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print(Name9)
lcd.print(':')
lcd.print(EEPROM.read(9))
lcd.setCursor(0, 1)
lcd.print(Name10)
lcd.print(':')
lcd.print(EEPROM.read(10))
delay(2000)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print(Name11)
lcd.print(':')
lcd.print(EEPROM.read(11))
lcd.setCursor(0, 1)
lcd.print(Name12)
lcd.print(':')
lcd.print(EEPROM.read(12))
delay(2000)
}
void clear_Memory()
{
lcd.clear()
lcd.print(0, 0)
lcd.print(F('Clear All Data?'))
lcd.setCursor(0, 1)
lcd.print(F('Long press: Y/N'))
delay(2500)
Serial.print('YES')
if (digitalRead(yes) == LOW)
{
EEPROM.write(1, 0)
EEPROM.write(2, 0)
EEPROM.write(3, 0)
EEPROM.write(4, 0)
EEPROM.write(5, 0)
EEPROM.write(6, 0)
EEPROM.write(7, 0)
EEPROM.write(8, 0)
EEPROM.write(9, 0)
EEPROM.write(10, 0)
EEPROM.write(11, 0)
EEPROM.write(12, 0)
lcd.clear()
lcd.setCursor(0, 0)
lcd.print(F('All Data Cleared'))
lcd.setCursor(0, 1)
lcd.print(F('****************'))
delay(1500)
}
if (digitalRead(no) == LOW)
{
return
}
}
//-------------------------Program developed by R.Girish------------------//

// ---------------- SET UID ----------------- //

char UID1 [] = 'F6: 97: ED: 70'

karakter UID2 [] = '45: B8: AF: C0 '

char UID3 [] = '15: 9F: A5: C0 '

char UID4 [] = 'C5: E4: AD: C0'

karakter UID5 [] = '65: 1D: AF: C0 '

karakter UID6 [] = '45: 8A: AF: C0 '

karakter UID7 [] = '15: 9F: A4: C0 '

char UID8 [] = '55: CB: AF: C0 '

karakter UID9 [] = '65: 7D: AF: C0 '

karakter UID10 [] = '05: 2C: AA: 04 '

char UID11 [] = '55: 7D: AA: 04 '

char UID12 [] = 'BD: 8A: 16: 0B'

// ---------------------------------------------- //

Anda memiliki nama tempat di sini:

// -------------- NAMA ----------------------- //

char Name1 [] = 'Student1'

char Name2 [] = 'Siswa2'

char Name3 [] = 'Siswa3'

char Name4 [] = 'Student4'

char Name5 [] = 'Student5'

char Name6 [] = 'Student6'

char Name7 [] = 'Student7'

char Name8 [] = 'Student8'

char Name9 [] = 'Student9'

char Name10 [] = 'Siswa10'

char Name11 [] = 'Siswa11'

char Name12 [] = 'Siswa12'

// -------------------------------------------- //

Gantikan siswa1, siswa2 dengan nama yang Anda inginkan atau biarkan apa adanya.

Anda harus mengatur waktu dari kapan hingga kapan sistem absensi harus aktif, sisa waktu sistem tidak akan mendaftarkan kehadiran ketika kami memindai tag / kartu RFID:

// ------ Dari -------- //

int h = 21 // Jam

int m = 00 // Min

// ------- Kepada ------- //

int h1 = 21 // Jam

int m1 = 50 // Min

// ------------------------- //

Bagian atas adalah waktu mulai dan bagian bawah adalah waktu berakhir. Anda harus memasukkan waktu dalam jam dari 0 hingga 23 dan menit dari 00 hingga 59.

Prototipe penulis:

Jika Anda memiliki pertanyaan tentang proyek ini, silakan ungkapkan di bagian komentar, Anda dapat menerima balasan cepat.




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