diff --git a/Assets/Ardity/Prefabs/SerialController_BinaryDelimited.prefab b/Assets/Ardity/Prefabs/SerialController_BinaryDelimited.prefab
deleted file mode 100644
index 8bf4faf..0000000
Binary files a/Assets/Ardity/Prefabs/SerialController_BinaryDelimited.prefab and /dev/null differ
diff --git a/Assets/Ardity/Prefabs/SerialController_BinaryDelimited.prefab.meta b/Assets/Ardity/Prefabs/SerialController_BinaryDelimited.prefab.meta
deleted file mode 100644
index 25f6317..0000000
--- a/Assets/Ardity/Prefabs/SerialController_BinaryDelimited.prefab.meta
+++ /dev/null
@@ -1,8 +0,0 @@
-fileFormatVersion: 2
-guid: e246aa68d79c3e6489397d781fa90434
-timeCreated: 1490930520
-licenseType: Free
-NativeFormatImporter:
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 
diff --git a/Assets/Scenes/MainScene.unity b/Assets/Scenes/MainScene.unity
index 4e6c768..ee6e8a8 100644
--- a/Assets/Scenes/MainScene.unity
+++ b/Assets/Scenes/MainScene.unity
@@ -290,7 +290,7 @@ MonoBehaviour:
   startMsg: START
   stopMsg: STOP
   videoControl: {fileID: 1041319595}
-  brainTrans: {fileID: 2000524570}
+  brainTrans: {fileID: 1881786632}
   dt: 0.1
   isTestInput: 1
 --- !u!1 &748090405
@@ -670,15 +670,15 @@ PrefabInstance:
   serializedVersion: 2
   m_Modification:
     serializedVersion: 3
-    m_TransformParent: {fileID: 0}
+    m_TransformParent: {fileID: 1881786632}
     m_Modifications:
     - target: {fileID: -8679921383154817045, guid: 89b9ffd9832690d4ba423ff477aa1d06, type: 3}
       propertyPath: m_LocalPosition.x
-      value: 0
+      value: 0.57
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 89b9ffd9832690d4ba423ff477aa1d06, type: 3}
       propertyPath: m_LocalPosition.y
-      value: -1.68
+      value: -1.92
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 89b9ffd9832690d4ba423ff477aa1d06, type: 3}
       propertyPath: m_LocalPosition.z
@@ -690,15 +690,15 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 89b9ffd9832690d4ba423ff477aa1d06, type: 3}
       propertyPath: m_LocalRotation.x
-      value: 0
+      value: -0
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 89b9ffd9832690d4ba423ff477aa1d06, type: 3}
       propertyPath: m_LocalRotation.y
-      value: 0
+      value: -0
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 89b9ffd9832690d4ba423ff477aa1d06, type: 3}
       propertyPath: m_LocalRotation.z
-      value: 0
+      value: -0
       objectReference: {fileID: 0}
     - target: {fileID: -8679921383154817045, guid: 89b9ffd9832690d4ba423ff477aa1d06, type: 3}
       propertyPath: m_LocalEulerAnglesHint.x
@@ -718,7 +718,7 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: 919132149155446097, guid: 89b9ffd9832690d4ba423ff477aa1d06, type: 3}
       propertyPath: m_IsActive
-      value: 0
+      value: 1
       objectReference: {fileID: 0}
     m_RemovedComponents: []
     m_RemovedGameObjects: []
@@ -819,6 +819,38 @@ Transform:
   m_Children: []
   m_Father: {fileID: 0}
   m_LocalEulerAnglesHint: {x: 31.065, y: -41.801, z: -3.726}
+--- !u!1 &1881786631
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 1881786632}
+  m_Layer: 0
+  m_Name: BrainCenter
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!4 &1881786632
+Transform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1881786631}
+  serializedVersion: 2
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
+  m_Children:
+  - {fileID: 2000524570}
+  m_Father: {fileID: 0}
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
 --- !u!4 &2000524570 stripped
 Transform:
   m_CorrespondingSourceObject: {fileID: -8679921383154817045, guid: 89b9ffd9832690d4ba423ff477aa1d06, type: 3}
@@ -833,6 +865,6 @@ SceneRoots:
   - {fileID: 748090407}
   - {fileID: 1160156452}
   - {fileID: 626615866}
-  - {fileID: 1785240159}
+  - {fileID: 1881786632}
   - {fileID: 1793753137}
   - {fileID: 718402601}
diff --git a/Assets/Scripts/AudioPlayControl.cs b/Assets/Scripts/AudioPlayControl.cs
index 7fe7485..02041ac 100644
--- a/Assets/Scripts/AudioPlayControl.cs
+++ b/Assets/Scripts/AudioPlayControl.cs
@@ -21,6 +21,8 @@ public class AudioPlayControl : MonoBehaviour
         player.clip = startAudio;
         player.Play();
         await Task.Delay((int)(1000 * player.clip.length));
+        if (this == null || this.gameObject == null)
+            return;
         player.Stop();
         this.gameObject.SetActive(false);
     }
diff --git a/Assets/Scripts/GameManager.cs b/Assets/Scripts/GameManager.cs
index 5147cce..934c9d2 100644
--- a/Assets/Scripts/GameManager.cs
+++ b/Assets/Scripts/GameManager.cs
@@ -17,6 +17,11 @@ public class GameManager : MonoBehaviour
     public void Awake()
     {
         SampleMessageListener.OnReceivedMSG += OnReceivedMessage;
+        brainTrans.gameObject.SetActive(false);
+    }
+    private void OnDestroy()
+    {
+        SampleMessageListener.OnReceivedMSG -= OnReceivedMessage;
     }
     private void OnReceivedMessage(string msgStr)
     {
@@ -94,14 +99,16 @@ public class GameManager : MonoBehaviour
             {
                 OnReceivedMessage(startMsg);
             }
-            else if (Input.GetKeyDown(KeyCode.Alpha2))
+            if (Input.GetKey(KeyCode.Alpha2))
             {
-                OnReceivedMessage("3,3,3,3,3,3");
+                float randomF() => Random.Range(0.0f, 1.0f);
+                OnReceivedMessage($"{randomF()},{randomF()},{randomF()},{randomF()},{randomF()},{randomF()}");
             }
             else if (Input.GetKeyDown(KeyCode.Alpha3))
             {
                 OnReceivedMessage(stopMsg);
-            }else if (Input.GetKeyDown(KeyCode.F))
+            }
+            else if (Input.GetKeyDown(KeyCode.F))
             {
                 videoControl.StopPlay();
                 JustGamePlayNoAnim();