ESP32 DevKit V1

// WiFi Blinking LED
#include <WiFi.h>

const char* ssid = "TU_WIFI";
const char* password = "TU_PASSWORD";

void setup() {
  Serial.begin(115200);
  pinMode(2, OUTPUT);
  
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting...");
  }
  Serial.println("WiFi connected!");
}

void loop() {
  digitalWrite(2, HIGH);
  delay(1000);
  digitalWrite(2, LOW);
  delay(1000);
}