Unity Toggle Pin ESP8266 NodeMCU

TogglePin.cs

using System.Collections;
using UnityEngine;

public class TogglePin : MonoBehaviour
{
    private int index;
    private string[] commands = new[] { "pin=ON1", "pin=OFF1" };
    public void Click()
    {
        string url = "http://192.168.4.1?" + commands[index];
        WWW www = new WWW( url );
        StartCoroutine( WaitForRequest( www ) );
        index = index == 0 ? 1 : 0;
    }

    IEnumerator WaitForRequest( WWW www )
    {
        yield return www;
    }
}