diff --git a/controller/config/copy__init__.py.example b/controller/config/copy__init__.py.example
index f98aaf5..1193ec2 100644
--- a/controller/config/copy__init__.py.example
+++ b/controller/config/copy__init__.py.example
@@ -17,4 +17,4 @@ PICTURE_TRANSFER_FILE='/mnt/zoblakdata/picture_transfer_ready.jpg'
 PICTURE_INPUT_FILE='/mnt/zoblakdata/picture.jpg' # must match file in PICTURE_COMMAND
 PICTURE_COMMAND="""avconv -i rtsp://192.168.5.10:554//user=admin_password=_channel=1_stream=0.sdp -i /home/pi/projects/tfm/controller/zoblakLogo.png -filter_complex "[0:v]drawtext=fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf:fontsize=30:box=1:boxcolor=black@0.75:text='%d\.%m\.%Y\. %H\:%M\:%S':fontcolor=white@0.8: x=10: y=10[text]; [text][1:v]overlay=main_w-overlay_w-5:5 [filtered]" -map "[filtered]" -f image2 -vframes 1 /mnt/zoblakdata/picture.jpg""" # filename must match PICTURE_INPUT_FILE path
 PICTURE_URL = 'http://agrar.zoblak.com/api/v1.0/picture'
-ONE_WIRE_THERMO_SENSORS = ['/dev/sys/bus/w1/devices/xxx/w1_slave'] # xxx -serial
+ONE_WIRE_THERMO_SENSORS = ['/sys/bus/w1/devices/xxx/w1_slave'] # xxx -serial
diff --git a/controller/drivers/onewire/__init__.py b/controller/drivers/onewire/__init__.py
index 7473ab1..80c08d4 100644
--- a/controller/drivers/onewire/__init__.py
+++ b/controller/drivers/onewire/__init__.py
@@ -1,20 +1,25 @@
 import re
 
 def read_one_thermo(filename):
-    NO_OF_DECIMALS = 3
-    textfile = open(filename, 'r')
-    filetext = textfile.read()
-    textfile.close()
+    try:
+        NO_OF_DECIMALS = 3
+        textfile = open(filename, 'r')
+        filetext = textfile.read()
+        textfile.close()
 
-    matches = re.findall("t=(\-?)(\d+)", filetext)
-    sign = -1 if matches[0][0] == '-' else 1
-    whole_reading = matches[0][1]
-    first_part = matches[0][1][0:-NO_OF_DECIMALS]
-    second_part = matches[0][1][-NO_OF_DECIMALS:]
-    first_part = '0' if first_part == '' else first_part
-
-    return  (int(first_part)  +  (int(second_part) / (10.0 ** NO_OF_DECIMALS) )) * sign
+        matches = re.findall("t=(\-?)(\d+)", filetext)
+        sign = -1 if matches[0][0] == '-' else 1
+        whole_reading = matches[0][1]
+        first_part = matches[0][1][0:-NO_OF_DECIMALS]
+        second_part = matches[0][1][-NO_OF_DECIMALS:]
+        first_part = '0' if first_part == '' else first_part
 
+        return  (int(first_part)  +  (int(second_part) / (10.0 ** NO_OF_DECIMALS) )) * sign
+    except Exception as e:
+        print 'errror'
+        print e
+        return -100.0
+        
 def read_many_thermo(filenames):
     result = []
     for filename in list(filenames):