diff --git a/example/simplesynctui.py b/example/simplesynctui.py
index e574dfc..07b33ff 100755
--- a/example/simplesynctui.py
+++ b/example/simplesynctui.py
@@ -1,23 +1,36 @@
 #!/usr/bin/python
 import serial
 import pysimplesync
+import time
 
-try:
-    ser = serial.Serial("/dev/ttyACM0");
-except:
-    ser = serial.Serial("/dev/ttyACM1");
-
-def write_to_ser(buf):
-    ser.write(bytes(buf))
-sync = pysimplesync.SimpleSync(write_to_ser)
-
-ser.reset_input_buffer()
-sync.request_all_interfaces()
-
+i = 0
 while True:
-    sync.handle_stream(ser.read_until(b"\x00"))
-    print("\t".join([str(a) for a in list(sync)]))
-    sync["v2"] = -400
-    sync["v1"] = 400
-    # 11.62V := 604
-    sync.update();
+    try:
+        ser = None
+        if (i == 0):
+            ser = serial.Serial("/dev/ttyUSB0",115200);
+        elif (i == 1):
+            ser = serial.Serial("/dev/ttyACM0");
+        elif (i == 2):
+            ser = serial.Serial("/dev/ttyACM1");
+        else:
+            i = 0
+
+        def write_to_ser(buf):
+            ser.write(bytes(buf))
+        sync = pysimplesync.SimpleSync(write_to_ser)
+
+        ser.reset_input_buffer()
+        sync.request_all_interfaces()
+
+        while True:
+            sync.handle_stream(ser.read_until(b"\x00"))
+            print("\t".join([str(a) for a in list(sync)]))
+            # 11.62V := 604
+            sync.update();
+    except Exception as e:
+        print(e)
+        time.sleep(0.5);
+        if ser is not None:
+            ser.close()
+    i+=1