diff --git a/umdloop_gui_web/spectrometer/raman_backend.py b/umdloop_gui_web/spectrometer/raman_backend.py
index e510e40..cb01ec7 100644
--- a/umdloop_gui_web/spectrometer/raman_backend.py
+++ b/umdloop_gui_web/spectrometer/raman_backend.py
@@ -50,8 +50,7 @@ def feed_frame(self, can_data: bytes) -> Optional[np.ndarray]:
         for i in range(self.pixels_per_frame):
             px_idx = start_idx + i
             if px_idx < self.num_pixels:
-                offset = 1 + i * 2
-                value = struct.unpack_from("<H", can_data, offset)[0]
+                value = can_data[1 + i]
                 self.buffer[px_idx] = float(value)
                 self.received_count += 1