diff --git a/arduino/rainboard-wifi/rainboard-wifi.ino b/arduino/rainboard-wifi/rainboard-wifi.ino
index f58ab80..20e1b66 100644
--- a/arduino/rainboard-wifi/rainboard-wifi.ino
+++ b/arduino/rainboard-wifi/rainboard-wifi.ino
@@ -4,13 +4,16 @@
 // D. Yi @ 2023 5 5
 //
 
+//wi-fi
+#include <ESP8266WiFi.h>
+
 ////network!
 const char* ssid     = "nolink";
 const char* password = "2222277777";
 const int NETWORK_PORT = 27016;
-
-//wi-fi
-#include <ESP8266WiFi.h>
+IPAddress local_IP(192, 168, 221, 114);
+IPAddress gateway(192, 168, 221, 1);
+IPAddress subnet(255, 255, 255, 0);
 
 //wi-fi event handlers : re-connect automatically
 WiFiEventHandler wifiConnectHandler;
@@ -66,6 +69,9 @@ void setup()
   Serial.println();
   Serial.print("Connecting to ");
   Serial.println(ssid);
+  if (!WiFi.config(local_IP, gateway, subnet)) {
+    Serial.println("STA Failed to configure");
+  }
   WiFi.begin(ssid, password);
   while (WiFi.status() != WL_CONNECTED) {
     // Serial.print(".");