diff --git a/looper.py b/looper.py
index f9a6371..5593153 100644
--- a/looper.py
+++ b/looper.py
@@ -12,7 +12,7 @@ import vxi11
 # Initial state
 toggle_state = 0
 
-#ser = serial.Serial(port='/dev/ttyACM0', baudrate=115200)
+ser = serial.Serial(port='/dev/ttyACM0', baudrate=115200)
 
 VISA_ADDRESS = "TCPIP::192.168.45.3::INSTR" 
 
@@ -121,7 +121,7 @@ def trigger_serial_command():
 
     data = (command, state)
     byte_data = pack_integers_to_bytes(*data)
-    #ser.write(serial.to_bytes(byte_data)) 
+    ser.write(serial.to_bytes(byte_data)) 
     
     # Schedule the NEXT random trigger
     # random.uniform(0.1, 100.0) provides the random delay in seconds
@@ -179,9 +179,9 @@ if __name__ == '__main__':
         
         data = (command, state)
         byte_data = pack_integers_to_bytes(*data)
-        #ser.write(serial.to_bytes(byte_data)) 
+        ser.write(serial.to_bytes(byte_data)) 
 
-        #ser.close()
+        ser.close()
 
         SPD.write('CH1:VOLT ' + str(0.0))  # Send power supply source voltage
         SPD.write('CH1:CURR ' + str(0.0))  # Send power supply current limit