diff --git a/config.py b/config.py
index af05ebf..5203ba3 100644
--- a/config.py
+++ b/config.py
@@ -4,8 +4,6 @@ from configutils import *
 
 SERIAL = '/dev/ttyUSB0'
 BAUD_RATE = 4800
-STOP_BITS = 1
-PARITY = None
 
 SFTP_HOST = 'rc-club-albersweiler.de'
 SFTP_PORT = 22
diff --git a/update.py b/update.py
index c7bc6c4..7f6cd7f 100644
--- a/update.py
+++ b/update.py
@@ -63,6 +63,8 @@ def create_database():
 def update_database(line):
     update_values = []
     for name, _, _ in STORED_VALUES:
+        if line[name] == None:
+            return
         update_values += ["%f" % float(line[name])]
 
     now = time.time()
@@ -115,7 +117,15 @@ def upload_graphs():
         print("Unexpected error while uploading:", sys.exc_info()[1])
 
 def main():
-    pass
+    ser = serial.Serial(SERIAL, BAUD_RATE, timeout=10.0)
+
+    while True:
+        line = ser.readline().decode('ascii')
+        print(line)
+        if len(line) > 0:
+            parsed = parse_line(line)
+            update_database(parsed)
+
 
 
 if __name__ == '__main__':