Jammer merupakan alat pengacak/blokir sinyal handphone/hp dapat digunakan di tempat ibadah untuk me-nonaktifkan perangkat cellular sehingga tidak bisa dipanggil/memanggil dengan tujuan menjaga tempat ibadah dari kebisingan dering ponsel.

Penggunaan jammer/jamming/repeater sinyal hp bisa mengganggu hak orang lain dan berpotensi melanggar undang-undang telekomunikasi, gunakan dengan bijak

Jadwal Shalat

Jadwal shalat berubah-ubah setiap hari tergantung posisi matahari dan bulan, hal ini membuat perangkat digital harus mampu mengikuti perubahan ini. Beberapa metode penggunaan jadwal shalat shalat digital :

1. Jadwal manual, yaitu jadwal rata-rata dari setiap waktu-waktu shalat
2. Jadwal database, yaitu jadwal yang tersimpan dalam tabel, bisa mingguan, bulanan atau tahunan
3. Jadwal Matahari, yaitu penghitungan waktu shalat menggunakan posisi peredaran matahari, dengan memasukkan variabel posisi lintang, bujur, dan tanggal.
4. Jadwal online, dengan mengambil data dari server online setiap hari.

Skema JWS Jammer menggunakan arduino:

Komponen yang digunakan dalam JWS Database Jadwal Waktu Bulanan:

1. Arduino Uno
2. LCD 1602 I2C Backpack
3. RTC DS3231
4. Relay untuk jammer
5. 3x LED
6. 3x TOmbol

Koding/program JWS Jadwal Bulanan:

#define pinLedMerah             5
#define pinLedHijau             6
#define pinLedBiru              7

#define pinTombolOtomatis       11
#define pinTombolManual         12
#define pinTombolJammer         13

#define pinJammer               4
#define relayOn                 LOW

#define waktuJammerShalat       20
#define waktuJammerShalatJumat  60
#define waktuJammerManual       20

#include <Wire.h>
#include "Sodaq_DS3231.h"
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x3F, 16, 2);

struct waktu
{
  byte jam;
  byte menit;
};


const waktu jadwalShalat[][8] PROGMEM = {
  //Imsyak  Shubuh  Terbit  Dhuha Dzuhur  Ashr  Maghrib Isya
  {{ 4, 20}, { 4, 30}, { 5, 51}, { 6, 15}, {12, 7}, {15, 34}, {18, 20}, {19, 36}},
  {{ 4, 20}, { 4, 30}, { 5, 51}, { 6, 15}, {12, 8}, {15, 34}, {18, 20}, {19, 36}},
  {{ 4, 21}, { 4, 31}, { 5, 52}, { 6, 16}, {12, 8}, {15, 35}, {18, 21}, {19, 36}},
  {{ 4, 21}, { 4, 31}, { 5, 52}, { 6, 16}, {12, 9}, {15, 35}, {18, 21}, {19, 37}},
  {{ 4, 22}, { 4, 32}, { 5, 53}, { 6, 17}, {12, 9}, {15, 36}, {18, 21}, {19, 37}},
  {{ 4, 23}, { 4, 33}, { 5, 53}, { 6, 17}, {12, 9}, {15, 36}, {18, 22}, {19, 37}},
  {{ 4, 23}, { 4, 33}, { 5, 54}, { 6, 18}, {12, 10}, {15, 36}, {18, 22}, {19, 38}},
  {{ 4, 24}, { 4, 34}, { 5, 54}, { 6, 18}, {12, 10}, {15, 37}, {18, 23}, {19, 38}},
  {{ 4, 24}, { 4, 34}, { 5, 55}, { 6, 19}, {12, 11}, {15, 37}, {18, 23}, {19, 38}},
  {{ 4, 25}, { 4, 35}, { 5, 55}, { 6, 19}, {12, 11}, {15, 37}, {18, 23}, {19, 38}},
  {{ 4, 25}, { 4, 35}, { 5, 56}, { 6, 20}, {12, 12}, {15, 37}, {18, 24}, {19, 39}},
  {{ 4, 26}, { 4, 36}, { 5, 56}, { 6, 20}, {12, 12}, {15, 38}, {18, 24}, {19, 39}},
  {{ 4, 27}, { 4, 37}, { 5, 56}, { 6, 20}, {12, 12}, {15, 38}, {18, 24}, {19, 39}},
  {{ 4, 27}, { 4, 37}, { 5, 57}, { 6, 21}, {12, 13}, {15, 38}, {18, 25}, {19, 39}},
  {{ 4, 28}, { 4, 38}, { 5, 57}, { 6, 21}, {12, 13}, {15, 38}, {18, 25}, {19, 40}},
  {{ 4, 28}, { 4, 38}, { 5, 58}, { 6, 22}, {12, 13}, {15, 39}, {18, 25}, {19, 40}},
  {{ 4, 29}, { 4, 39}, { 5, 58}, { 6, 22}, {12, 14}, {15, 39}, {18, 25}, {19, 40}},
  {{ 4, 29}, { 4, 39}, { 5, 59}, { 6, 23}, {12, 14}, {15, 39}, {18, 26}, {19, 40}},
  {{ 4, 30}, { 4, 40}, { 5, 59}, { 6, 23}, {12, 14}, {15, 39}, {18, 26}, {19, 40}},
  {{ 4, 30}, { 4, 40}, { 5, 59}, { 6, 23}, {12, 15}, {15, 39}, {18, 26}, {19, 40}},
  {{ 4, 31}, { 4, 41}, { 6, 0}, { 6, 24}, {12, 15}, {15, 39}, {18, 26}, {19, 40}},
  {{ 4, 31}, { 4, 41}, { 6, 0}, { 6, 24}, {12, 15}, {15, 39}, {18, 26}, {19, 40}},
  {{ 4, 32}, { 4, 42}, { 6, 1}, { 6, 25}, {12, 16}, {15, 39}, {18, 27}, {19, 41}},
  {{ 4, 32}, { 4, 42}, { 6, 1}, { 6, 25}, {12, 16}, {15, 39}, {18, 27}, {19, 41}},
  {{ 4, 33}, { 4, 43}, { 6, 1}, { 6, 25}, {12, 16}, {15, 39}, {18, 27}, {19, 41}},
  {{ 4, 33}, { 4, 43}, { 6, 2}, { 6, 26}, {12, 16}, {15, 39}, {18, 27}, {19, 41}},
  {{ 4, 34}, { 4, 44}, { 6, 2}, { 6, 26}, {12, 17}, {15, 39}, {18, 27}, {19, 41}},
  {{ 4, 34}, { 4, 44}, { 6, 2}, { 6, 26}, {12, 17}, {15, 39}, {18, 27}, {19, 41}},
  {{ 4, 35}, { 4, 45}, { 6, 3}, { 6, 27}, {12, 17}, {15, 39}, {18, 27}, {19, 40}},
  {{ 4, 35}, { 4, 45}, { 6, 3}, { 6, 27}, {12, 17}, {15, 39}, {18, 27}, {19, 40}},
  {{ 4, 36}, { 4, 46}, { 6, 3}, { 6, 27}, {12, 17}, {15, 39}, {18, 27}, {19, 40}},
};
byte waktuUtama[] =  {1, 4, 5, 6, 7};
char namaHari[][8] = {"Minggu,", "Senin, ", "Selasa,", " Rabu, ", "Kamis, ", "Jumat, ", "Sabtu, "};
char namaWaktu[][16] = {"Imsyak", "Shubuh", "Terbit", "Dhuha", "Dzuhur", "Ashr", "Maghrib", "Isya"};

enum Mode
{
  otomatis,
  manual,
};

byte mode;
char buffer[32];
byte detikSebelumnya = 60;
byte menitSebelumnya = 60;
uint16_t unixRelay;
bool statusJammer;
DateTime now;

void setup()
{
  pinMode(pinLedMerah, OUTPUT);
  pinMode(pinLedHijau, OUTPUT);
  pinMode(pinLedBiru, OUTPUT);
  digitalWrite(pinJammer, !relayOn);
  pinMode(pinJammer, OUTPUT);

  pinMode(pinTombolOtomatis, INPUT_PULLUP);
  pinMode(pinTombolManual, INPUT_PULLUP);
  pinMode(pinTombolJammer, INPUT_PULLUP);

  Serial.begin(9600);
  Serial.println("JWS Jammer Sinyal HP dengan Jadwal Bulanan");
  Serial.println("https://www.project.semesin.com");

  Wire.begin();
  Wire.beginTransmission(0x3F);
  if (Wire.endTransmission())
  {
    lcd = LiquidCrystal_I2C(0x27, 16, 2);
  }
  lcd.begin();

  rtc.begin();
  now = rtc.now();
  if (now.year() == 2000)
  {
    //Waktu compiler
    char bulan[12];
    byte indexBulan;
    int jam, menit, detik, tanggal, tahun;

    char *namaBulan[12] = {
      "Jan", "Feb", "Mar", "Apr", "May", "Jun",
      "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
    };
    sscanf(__TIME__, "%d:%d:%d", &jam, &menit, &detik);
    sscanf(__DATE__, "%s %d %d", bulan, &tanggal, &tahun);
    for (indexBulan = 0; indexBulan < 12; indexBulan++) {
      if (strcmp(bulan, namaBulan[indexBulan]) == 0)
        break;
    }
    uint8_t wday = hariDariTanggal(tanggal, indexBulan + 1, tahun);
    DateTime dt(tahun, indexBulan + 1, tanggal, jam, menit, detik, wday);
    rtc.setDateTime(dt);
    Serial.println("RTC sudah otomatis di setting (Sekali saja)");
  }

  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("JWS Bulanan");
  lcd.setCursor(0, 1);
  lcd.print("fitur : Jammer");

  delay(3000);
  lcd.clear();

  digitalWrite(pinLedHijau, HIGH);
  Serial.println("Sistem mulai");

}

void loop()
{
  now = rtc.now();

  uint16_t unixSekarang = now.hour() * 60 + now.minute();
  if (detikSebelumnya != now.second())
  {

    detikSebelumnya = now.second();
    if (!statusJammer)
    {
      sprintf(buffer, "%s %02d/%02d/%02d", namaHari[now.dayOfWeek() - 1], now.date(), now.month(), now.year() - 2000);
      lcd.setCursor(0, 0);
      lcd.print(buffer);
    }
    sprintf(buffer, "%02d:%02d:%02d", now.hour(), now.minute(), now.second());
    lcd.setCursor(4, 1);
    lcd.print(buffer);
  }
  if (menitSebelumnya != now.minute())
  {
    menitSebelumnya = now.minute();
    if (mode == otomatis)
    {
      for (byte i = 0; i < 5; i++)
      {
        if ((pgm_read_byte(&jadwalShalat[now.date() - 1][waktuUtama[i]].jam) == now.hour()) &&
            (pgm_read_byte(&jadwalShalat[now.date() - 1][waktuUtama[i]].menit) == now.minute()))
        {
          digitalWrite(pinLedMerah, HIGH);
          digitalWrite(pinJammer, relayOn);

          if ((i == 1) && (now.dayOfWeek() == 6)) //Dzuhur / jumatan
          {
            unixRelay = unixSekarang + waktuJammerShalatJumat;//menit
          }
          else
          {
            unixRelay = unixSekarang + waktuJammerShalat;//menit
          }
          lcd.clear();
          lcd.setCursor(0, 0);
          lcd.print("  J A M M E R   ");
          statusJammer = true;

          sprintf(buffer, "Waktu: %s", namaWaktu[waktuUtama[i]]);
          lcd.setCursor(0, 1);
          lcd.print(buffer);

          delay(5000);
          lcd.clear();
          lcd.setCursor(0, 0);
          lcd.print("  J A M M E R   ");
        }
      }
    }
    if (statusJammer)
    {
      if (unixSekarang == unixRelay)
      {
        statusJammer = false;
        digitalWrite(pinLedMerah, LOW);
        digitalWrite(pinJammer, !relayOn);
      }
    }
  }


  if (!digitalRead(pinTombolOtomatis))
  {
    delay(50);
    if (!digitalRead(pinTombolOtomatis))
    {
      mode = otomatis;
      digitalWrite(pinLedHijau, HIGH);
      digitalWrite(pinLedBiru, LOW);
      lcd.setCursor(0, 0);
      lcd.print("    M O D E     ");
      lcd.setCursor(0, 1);
      lcd.print("O T O M A T I S ");
      delay(3000);
      lcd.clear();
    }
  }
  if (!digitalRead(pinTombolManual))
  {
    delay(50);
    if (!digitalRead(pinTombolManual))
    {
      mode = manual;
      digitalWrite(pinLedHijau, LOW);
      digitalWrite(pinLedBiru, HIGH);
      lcd.setCursor(0, 0);
      lcd.print("    M O D E     ");
      lcd.setCursor(0, 1);
      lcd.print("  M A N U A L   ");
      delay(3000);
      lcd.clear();
    }
  }
  if (mode == manual)
  {
    if (!digitalRead(pinTombolJammer))
    {
      delay(50);
      if (!digitalRead(pinTombolJammer))
      {
        if (statusJammer)
        {
          digitalWrite(pinLedMerah, LOW);
          digitalWrite(pinJammer, !relayOn);
          statusJammer = false;
        }
        else
        {
          digitalWrite(pinLedMerah, HIGH);
          digitalWrite(pinJammer, relayOn);
          unixRelay = unixSekarang + waktuJammerManual;//menit
          statusJammer = true;
          lcd.setCursor(0, 0);
          lcd.print("  J A M M E R   ");
          lcd.setCursor(0, 1);
          lcd.print("  M A N U A L   ");
          delay(5000);
        }
        while (!digitalRead(pinTombolJammer));
        delay(50);
      }
    }
  }
}
byte hariDariTanggal(byte tanggal, byte bulan, uint16_t tahun)
{
  uint16_t jumlahHariPerBulanMasehi[] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
  if (tahun >= 2000)
    tahun -= 2000;

  uint32_t jumlahHari = tahun * 365;
  uint16_t tahunKabisat = tahun / 4;
  for (byte i = 0; i < tahun; i++)
  {
    if (!(i % 4))
    {
      jumlahHari++;
    }
  }
  jumlahHari += jumlahHariPerBulanMasehi[bulan - 1];
  if ( (bulan >= 2) && !(tahun % 4))
  {
    jumlahHari++;
  }
  jumlahHari += tanggal;
  return ((jumlahHari + 5) % 7) + 1;
}

Library:

• LiquidCrystal-I2C.zip
• Sodaq_DS3231.zip