change the baud rate

Code/ESP32_communication/Two-way/Previous_version/ESP32_master/ESP32_master.ino

@@ -52,7 +52,7 @@ void OnDataRecv(const uint8_t * mac, const uint8_t *incomingData, int len) {
 
 void setup() {
   // Init Serial Monitor
-  Serial.begin(115200);
+  Serial.begin(9600);
  
   // Set device as a Wi-Fi Station
   WiFi.mode(WIFI_STA);