sketch_mar4a.ino

/* Reference in website :
 * https://how2electronics.com/interfacing-0-25v-dc-voltage-sensor-with-arduino/
 *
 */

#include <ACS712.h>

/* Keterangan :
 * Sensor 1 : untuk PV
 * Sensor 2 : Untuk Battery
 * Relay 1 : Switch ke sumber battery
 * Relay 2 : Switch ke sumber PV
 * Relay 3 : Switch ke sumber PLN
 * Relay 4 : Switch ke sumber Inverter
 */

// define analog input
#define sensor_voltage_1 A0
#define sensor_voltage_2 A1
#define sensor_current_1 A3
#define sensor_current_2 A4

// define digital output
#define relay_1 4
#define relay_2 5
#define relay_3 6
#define relay_4 7
#define HIDUP LOW
#define MATI HIGH

// float for ADC voltage & input voltage
float in_voltage_1 = 0.0, in_voltage_2 = 0.0;

// deklarasi object ACS712
/* Kode untuk type sensor
 * 5A   : ACS712_05B (185mV)
 * 20A  : ACS712_20A (100mV)
 * 30A  : ACS712_30A (66mV)
 */
#define ACS712TYPE 100
ACS712 acs_sensor_1(sensor_current_1, 5.0, 1023, ACS712TYPE);
ACS712 acs_sensor_2(sensor_current_2, 5.0, 1023, ACS712TYPE);
int in_current_1, in_current_2;

// deklarasi variabel pending
long pending_1 = 1000; // 1000ms = 1 detik
long pending_2 = 1000; // 1000ms = 1 detik

// deklarasi variabel millis waktu sebelum jalannya program
unsigned long waktuSebelum_1 = 0;
unsigned long waktuSebelum_2 = 0;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println(F("DC Voltage Test"));
  pinMode(relay_1, OUTPUT);
  pinMode(relay_2, OUTPUT);
  pinMode(relay_3, OUTPUT);
  pinMode(relay_4, OUTPUT);

  acs_autoMidPoin();

}

void loop() {
  // put your main code here, to run repeatedly:
  // deklarasi variabel millis waktu sekarang jalannya program
  unsigned long waktuSekarang_1 = millis();
  unsigned long waktuSekarang_2 = millis();

  // jalankan program 1 : untuk Battery
  if ((unsigned long) (waktuSekarang_1 - waktuSebelum_1) >= pending_1) {
    waktuSebelum_1 = waktuSekarang_1;
    // get voltage and current value battery
    in_voltage_1 = get_voltage(sensor_voltage_1, 12.0);
    in_current_1 = get_current_1();

    // print result to serial monitor to 2 decimal places
    Serial.print(F("Voltage 1 : "));
    Serial.print(in_voltage_1, 2);
    Serial.print(F(" | Current 1 : "));
    Serial.print(in_current_1);
    Serial.println(F(" |"));

    // Short delay
    delay(500);
  }

  // jalankan program 2 : untuk PV
  if ((unsigned long) (waktuSekarang_2 - waktuSebelum_2) >= pending_2) {
    waktuSebelum_2 = waktuSekarang_2;
    // get voltage and current value PV
    in_voltage_2 = get_voltage(sensor_voltage_2, 12.0);
    in_current_2 = get_current_2();

    // print result to serial monitor to 2 decimal places
    Serial.print(F("Voltage 2 : "));
    Serial.print(in_voltage_2, 2);
    Serial.print(F(" | Current 2 : "));
    Serial.print(in_current_2);
    Serial.println(F(" |"));

    // Short delay
    delay(500);
  }

  // program in relay
  // jika tegangan battery lemah, maka relay PV Hidup
  if (in_voltage_1 <= 10.5) {
    digitalWrite(relay_1, MATI);
    digitalWrite(relay_2, HIDUP);
    digitalWrite(relay_3, MATI);
    digitalWrite(relay_4, HIDUP);
  }

  // jika tegangan PV lemah, maka relay battery Hidup
  else if (in_voltage_2 <= 10.5) {
    digitalWrite(relay_1, HIDUP);
    digitalWrite(relay_2, MATI);
    digitalWrite(relay_3, MATI);
    digitalWrite(relay_4, HIDUP);
  }

  // jika tegangan battery dan PV lemah, maka relay PLN Hidup
  else if (in_voltage_1 <= 10.5 && in_voltage_2 <= 10.5) {
    digitalWrite(relay_1, MATI);
    digitalWrite(relay_2, MATI);
    digitalWrite(relay_3, HIDUP);
    digitalWrite(relay_4, MATI);
  }

}