#include <WiFi.h>  

const int ledPin = 2;    
const int buttonPin = 12; 

void setup() {
  pinMode(ledPin, OUTPUT);      
  pinMode(buttonPin, INPUT);     
  Serial.begin(115200);          
  WiFi.mode(WIFI_STA);           
}

void loop() {
  if (digitalRead(buttonPin) == HIGH) {  
    Serial.println("Memindai jaringan WiFi...");
    int n = WiFi.scanNetworks();         

    if (n == 0) {
      Serial.println("Tidak ada jaringan ditemukan.");
      digitalWrite(ledPin, LOW);         
    } else {
      Serial.println("Jaringan WiFi ditemukan!");
      digitalWrite(ledPin, HIGH);        
      for (int i = 0; i < n; ++i) {
        Serial.printf("%d: %s (%ddBm)\n", i + 1, WiFi.SSID(i).c_str(), WiFi.RSSI(i));
      }
    }
    delay(5000);  
  } else {
    digitalWrite(ledPin, LOW);  
  }
}