diff --git a/read_one-wire_sensor.py b/read_one-wire_sensor.py
index 6023747..5e899c9 100755
--- a/read_one-wire_sensor.py
+++ b/read_one-wire_sensor.py
@@ -19,12 +19,16 @@ try:
   try:
       value = round(float(returned_output.decode("utf-8").strip().strip("'")), 1)
   except ValueError:
-      print (now()+" "+room+": Expected temperature, got garbage: "+returned_output)
+      print ("Got garbage: "+returned_output)
       sys.exit(1)
 except Exception as e:
   print(e)
   sys.exit(1)
 
 data = {}
-data[args.metric] = value
+if "luminosity" in args.metric:
+  # conversion en lm
+  data[args.metric] = int(float(value) * 122900.45063498567)
+else:
+  data[args.metric] = value
 print(json.dumps(data))
diff --git a/read_yocto_sensor.py b/read_yocto_sensor.py
new file mode 100755
index 0000000..4c3e9fc
--- /dev/null
+++ b/read_yocto_sensor.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import argparse
+import json
+import subprocess
+import sys
+
+parser = argparse.ArgumentParser(description='Read Yocto sensor.')
+parser.add_argument('metric', type=str,
+                    help='Metric name.')
+parser.add_argument('binary', type=str,
+                    help='Yocto binary.')
+parser.add_argument('sensor', type=str,
+                    help='Sensor name.')
+
+args = parser.parse_args()
+
+try:
+  returned_output = subprocess.check_output(["/usr/local/YoctoLib.cmdline.24497/Binaries/linux/32bits/"+args.binary, "-r", "localhost", "-f", "[result]", args.sensor, "get_currentValue"])
+  try:
+      value = round(float(returned_output.decode("utf-8").strip().strip("'")), 1)
+  except ValueError:
+      print ("Got garbage: "+returned_output)
+      sys.exit(1)
+except Exception as e:
+  print(e)
+  sys.exit(1)
+
+data = {}
+data[args.metric] = value
+print(json.dumps(data))