ITS: improve error msg if wrong controller

Bug: 234605416
Test: run ITS
Change-Id: Ibd0d7ac83af89575041352912c89b901969fb09b
diff --git a/apps/CameraITS/tests/sensor_fusion/test_preview_stabilization.py b/apps/CameraITS/tests/sensor_fusion/test_preview_stabilization.py
index 713d577..8f199ce 100644
--- a/apps/CameraITS/tests/sensor_fusion/test_preview_stabilization.py
+++ b/apps/CameraITS/tests/sensor_fusion/test_preview_stabilization.py
@@ -137,6 +137,8 @@
       # Initialize rotation rig
       rot_rig['cntl'] = self.rotator_cntl
       rot_rig['ch'] = self.rotator_ch
+      if rot_rig['cntl'].lower() != 'arduino':
+        raise AssertionError(f'You must use the arduino controller for {_NAME}.')
 
       # List of video resolutions to test
       supported_preview_sizes = cam.get_supported_preview_sizes(self.camera_id)
diff --git a/apps/CameraITS/tests/sensor_fusion/test_video_stabilization.py b/apps/CameraITS/tests/sensor_fusion/test_video_stabilization.py
index 9417d18..c834ba3 100644
--- a/apps/CameraITS/tests/sensor_fusion/test_video_stabilization.py
+++ b/apps/CameraITS/tests/sensor_fusion/test_video_stabilization.py
@@ -156,6 +156,8 @@
       # Initialize rotation rig
       rot_rig['cntl'] = self.rotator_cntl
       rot_rig['ch'] = self.rotator_ch
+      if rot_rig['cntl'].lower() != 'arduino':
+        raise AssertionError(f'You must use the arduino controller for {_NAME}.')
 
       # Create list of video qualities to test
       supported_video_qualities = cam.get_supported_video_qualities(