// Pines para relés y botones
const int numRelays = 10;

const int relayPins[numRelays] = {2, 19, 20, 21, 35, 36, 37, 38, 39, 40}; // Pines OUTPUT
const int buttonPins[numRelays] = {4, 5, 6, 7, 8, 9, 10, 11, 12, 13};     // Pines INPUT_PULLUP

bool relayStates[numRelays] = {0};
bool lastButtonStates[numRelays] = {0};

void setup() {
  for (int i = 0; i < numRelays; i++) {
    pinMode(relayPins[i], OUTPUT);
    digitalWrite(relayPins[i], LOW); // Relé apagado al inicio

    pinMode(buttonPins[i], INPUT_PULLUP); // Botón activo en LOW
  }
}

void loop() {
  for (int i = 0; i < numRelays; i++) {
    bool currentButton = digitalRead(buttonPins[i]) == LOW;

    // Flanco de bajada = botón presionado
    if (currentButton && !lastButtonStates[i]) {
      relayStates[i] = !relayStates[i]; // Cambia estado del relé
      digitalWrite(relayPins[i], relayStates[i] ? HIGH : LOW);
    }

    lastButtonStates[i] = currentButton;
  }

  delay(50); // Antirebote básico
}