diff --git a/scripts/speed_reader.py b/scripts/speed_reader.py
index aaacf5d..0a3115c 100644
--- a/scripts/speed_reader.py
+++ b/scripts/speed_reader.py
@@ -6,6 +6,7 @@ pulses_per_rotation = 4
 reader = Button(4, pull_up=False, bounce_time=0.0005)
 set_variable("speed_reader_last_impulse_time", datetime.datetime.now(), False)
 set_variable("actual_rpm_unfiltered", 0, False)
+set_variable("impulses", 1, False)
 
 
 def event():
@@ -23,11 +24,10 @@ def event():
     print(round(actual_rpm, 1))
     
 
-impulses = 0
 
 def new_event():
-    impulses = impulses + 1
-    print(impulses)
+    set_variable("impulses", int(get_variable("impulses")) + 1, False)
+    print(get_variable("impulses"))