diff --git a/pyrelacs/dataio/sin_producer.py b/pyrelacs/dataio/sin_producer.py
index 236a907..35ba7fe 100644
--- a/pyrelacs/dataio/sin_producer.py
+++ b/pyrelacs/dataio/sin_producer.py
@@ -28,6 +28,7 @@ class SinProducer:
         AMPLITUDE = 2
         FREQUENCY = 10
 
+        self.stop = False
         log.debug("producing Sin")
         start_time = time.time()
         t = 0
@@ -39,9 +40,9 @@ class SinProducer:
 
         end_time = time.time()
 
-        data = self.buffer.get_all()
         log.debug(f"duration sinus {end_time-start_time}")
         log.debug(f"Stimulation time {t}")
+        # data = self.buffer.get_all()
         # log.debug(data.shape[0])
         # log.debug(data.shape[0] / self.buffer.samplerate)
         # plt.plot(np.arange(data.size) / self.buffer.samplerate, data)