diff --git a/main.cpp b/main.cpp
index fb84a50..50a1ba9 100755
--- a/main.cpp
+++ b/main.cpp
@@ -114,7 +114,7 @@ int main(int argc, char* argv[])
     float pressure = NAN;
     po::variables_map vm;
     std::string port,path,filename;
-    int speed,brightness,saturation,contrast;
+    int speed,brightness = 0,saturation = 0 ,contrast = 0;
         
     po::options_description desc("Allowed options");
     desc.add_options()
@@ -127,9 +127,9 @@ int main(int argc, char* argv[])
         ("capture", "capture photo of camera")
         ("port", po::value<string>(&port)->default_value("/dev/ttyUSB0"), "port to read from")
         ("speed", po::value<int>(&speed)->default_value(460800), "speed read from port")
-        ("brightness", po::value<int>(&brightness)->default_value(0), "set brightness")
-        ("saturation", po::value<int>(&saturation)->default_value(0), "set saturation")
-        ("contrast", po::value<int>(&contrast)->default_value(0), "set contrast")
+        ("brightness", po::value<int>(&brightness)->implicit_value(0), "set brightness")
+        ("saturation", po::value<int>(&saturation)->implicit_value(0), "set saturation")
+        ("contrast", po::value<int>(&contrast)->implicit_value(0), "set contrast")
         ("temperature", "get and print temprature")
         ("humidity", "get and print humidity")
         ("pressure", "get and print pressure")
@@ -187,6 +187,8 @@ int main(int argc, char* argv[])
         boost::this_thread::sleep(posix_time::milliseconds(5000));
 
         if (! vm.count("noreset")) { 
+            serial.writeString("\r\n\r\n");
+            boost::this_thread::sleep(posix_time::milliseconds(300));
             line = serial.readStringUntil("\n");
             trim(line);
             BOOST_LOG_TRIVIAL(debug) << line;
@@ -194,6 +196,7 @@ int main(int argc, char* argv[])
 
         if (vm.count("measure") || vm.count("temperature") || vm.count("pressure") || vm.count("humidity")) {
             serial.writeString("measure\r\n");
+            boost::this_thread::sleep(posix_time::milliseconds(100));
             
             for (;;) {
                 line = serial.readStringUntil("\n");
diff --git a/openwrt/Makefile b/openwrt/Makefile
index ad8826c..e067514 100644
--- a/openwrt/Makefile
+++ b/openwrt/Makefile
@@ -7,7 +7,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=usbserial-dw
-PKG_VERSION:=0.3.6
+PKG_VERSION:=0.3.7
 PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git