const int ldrPin = A0;        
const int ledPin = 3;          
const int potPin = A1;      
const int buttonPin = 2;         
bool automaticMode = true;       
int lastButtonState = LOW;    
unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 50;
void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP);
  Serial.begin(9600);
}
void loop() {
  int ldrValue = analogRead(ldrPin);
  int potValue = analogRead(potPin);
  int reading = digitalRead(buttonPin);
  if (reading == LOW && lastButtonState == HIGH && (millis() - lastDebounceTime > debounceDelay)) {
    automaticMode = !automaticMode; 
    lastDebounceTime = millis();
  }
  lastButtonState = reading;
  if (automaticMode) {
    int brightness = map(ldrValue, 0, 1023, 255, 0);
    analogWrite(ledPin, brightness);
  } else {  
    int brightness = map(potValue, 0, 1023, 0, 255);
    analogWrite(ledPin, brightness);
  }
  Serial.print("Modo: ");
  Serial.println(automaticMode ? "Automático" : "Manual");
  delay(100);
}