const int IR_PIN = 2;    // Pin connected to the proximity sensor
const int relay1 = 6;    // Pin connected to the relay module 1
const int relay2 = 7;    // Pin connected to the relay module 2
const int button1 = 3;
const int button2 = 4;

unsigned long lastTime1;
unsigned long lastTime2;
int relayDuration = 200;
unsigned long timer;

int relay1On = 0;
int relay2On = 0;
int relay2Toggle = 0;

void setup() {
  pinMode(IR_PIN, INPUT_PULLUP);
    pinMode(button1, INPUT_PULLUP);
      pinMode(button2, INPUT_PULLUP);
  pinMode(relay1, OUTPUT);
  digitalWrite(relay1, LOW);  // Ensure relay1 is off
  pinMode(relay2, OUTPUT);
  digitalWrite(relay2, LOW);  // Ensure relay2 is off
  timer = millis();
}

void loop() {

if (millis() - timer > 2500){
  if (digitalRead(IR_PIN) == LOW && relay2Toggle == 0) {
    digitalWrite(relay1, HIGH);
    lastTime1 = millis();
    relay1On = 1;
    relay2Toggle = 1;
    timer = millis();
  } else if (digitalRead(IR_PIN) == LOW && relay2Toggle == 1) {
    digitalWrite(relay2, HIGH);
    lastTime2 = millis();
    relay2On = 1;
    relay2Toggle = 0;
    timer = millis();
  }
}


  if (digitalRead(button1) == LOW) {
    digitalWrite(relay1, HIGH);
    lastTime1 = millis();
    relay1On = 1;
    relay2Toggle = 1;
    timer = millis();
  }  
  if (digitalRead(button2) == LOW) {
    digitalWrite(relay2, HIGH);
    lastTime2 = millis();
    relay2On = 1;
    relay2Toggle = 0;
    timer = millis();
  }

  if (relay1On == 1 && digitalRead(button1) == HIGH) {
    if (millis() - lastTime1 > relayDuration) {
      digitalWrite(relay1, LOW);
      relay1On = 0;
    }
  }

  if (relay2On == 1 && digitalRead(button2) == HIGH) {
    if (millis() - lastTime2 > relayDuration) {
      digitalWrite(relay2, LOW);
      relay2On = 0;
    }
  }


}