#include <IRremote.h>
#include <Stepper.h>

const int stepsPerRevolution = 200; // Ada 200 steps
int Receiver = 7; // Pin digital di pin 7 u menerima sinyal ir

IRrecv irrecv(Receiver); // Objek menerima sinyal
decode_results results; // Menyimpan hasil decoding sinyal ir

Stepper stepper(stepsPerRevolution, 8, 9, 10, 11); // Create stepper motor obj
int previous = 0; // Menyimpan langkah motor sebelumnya agar motor bergerak pd
int stepperSteps = 0; // Menyimpan jumlah langkah

void setup() {
  stepper.setSpeed(200); // Atur kecepatan motor 200 rpm
  Serial.begin(9600); // Initialize serial communication
  irrecv.enableIRIn(); // Mengaktifkan IR signals

  Serial.println("Start"); // Initial message
}

void loop() {
  if (irrecv.decode()) { // Ada sinyal yang diterima
    IRremote(); // Handle IR remote commands
    irrecv.resume(); // Receive the next value
    stepper.step(stepperSteps - previous); // Move stepper motor by the specified steps
    previous = stepperSteps; // Update previous steps
    
    Serial.print("Stepper motor bergerak ke posisi: ");
    Serial.println(stepperSteps);
  }
}

void IRremote() {
  int IRinput = irrecv.decodedIRData.command;

  if (IRinput == 152) { // Tombol -
    stepperSteps -= 1;
    if (stepperSteps < 0) {
      stepperSteps = 0;
    }
  }
  
  if (IRinput == 2) { // Tombol +
    stepperSteps += 1;
    if (stepperSteps > 200) {
      stepperSteps = 200;
    }
  }
}