diff --git a/app/src/main/java/com/example/hpostesting/presentation/hemocube/HemoCubeFragment.kt b/app/src/main/java/com/example/hpostesting/presentation/hemocube/HemoCubeFragment.kt
index 93d3852..1de7dbe 100644
--- a/app/src/main/java/com/example/hpostesting/presentation/hemocube/HemoCubeFragment.kt
+++ b/app/src/main/java/com/example/hpostesting/presentation/hemocube/HemoCubeFragment.kt
@@ -43,6 +43,7 @@ class HemoCubeFragment : Fragment() {
 
     private var usbDevice: UsbDevice? = null
     private var usbConnection: UsbDeviceConnection? = null
+    private var usbConnection1: UsbDeviceConnection? = null
 
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?