EltroNerd IoT-Core v3 Hardware Node

// EltroNerd IoT-Core v3 Firmware Initialization
#include <Arduino.h>
#include <WiFi.h>
#include <esp_sleep.h>

#define SENSOR_PIN 34
#define SLEEP_TIME_SEC 60

void setup() {
  Serial.begin(115200);
  pinMode(LED_BUILTIN, OUTPUT);

  // Initialize EltroNerd IoT-Core Sensors
  Serial.println("[EltroNerd] IoT-Core v3 Booting...");
  
  WiFi.begin("EltroNerd_Mesh", "SecureKey2026");
  while (WiFi.status() != WL_CONNECTED) {
    delay(200);
    digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
  }
  
  Serial.printf("Connected to Mesh IP: %s\n", WiFi.localIP().toString().c_str());

  // Configure Deep Sleep Timer (15uA Draw)
  esp_sleep_enable_timer_wakeup(SLEEP_TIME_SEC * 1000000ULL);
  Serial.println("Entering ultra-low power deep sleep...");
  esp_deep_sleep_start();
}

void loop() {
  // Unused in Deep Sleep
}