#include <Arduino.h>

const int RELAY_PIN = 15;  // GP15

void setup() {
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);
  Serial.begin(115200);
  Serial.println("AC Light Control - Raspberry Pi Pico C++");
}

void loop() {
  digitalWrite(RELAY_PIN, HIGH);
  Serial.println("Den: BAT");
  delay(3000);
  digitalWrite(RELAY_PIN, LOW);
  Serial.println("Den: TAT");
  delay(3000);
}