diff --git a/README.md b/README.md
index 8221ca5..6d46dca 100644
--- a/README.md
+++ b/README.md
@@ -150,7 +150,7 @@ platformio device monitor -b 115200
 * LAN_INIT_DELAY=2000 // set lan init delay for Wiznet ethernet shield
 * ESP_WIFI_AP=MYAP // esp wifi access point name
 * ESP_WIFI_PWD=MYPWD // esp wifi access point password
-* WITHOUT_DHT //disable DHT Input support
+* DHT_DISABLE //disable DHT Input support
 
 
 
diff --git a/build_flags_template.sh b/build_flags_template.sh
index 0ec4b85..5c8c933 100644
--- a/build_flags_template.sh
+++ b/build_flags_template.sh
@@ -23,6 +23,8 @@
  export FLAGS="$FLAGS -DCONTROLLINO"
  export FLAGS="$FLAGS -DESP_WIFI_AP=MYAP"
  export FLAGS="$FLAGS -DESP_WIFI_PWD=MYPWD"
+ export FLAGS="$FLAGS -DDHT_DISABLE"
+ export FLAGS="$FLAGS -DRESET_PIN=5"
  export PLATFORMIO_BUILD_FLAGS="$FLAGS"
  echo PLATFORMIO_BUILD_FLAGS=$PLATFORMIO_BUILD_FLAGS
  echo "==============================================Custom build flags END====================================================="
diff --git a/config-examples/c4-3e-11-03-1b-1e.config.json b/config-examples/c4-3e-11-03-1b-1e.config.json
index 67d98a8..fe0266b 100644
--- a/config-examples/c4-3e-11-03-1b-1e.config.json
+++ b/config-examples/c4-3e-11-03-1b-1e.config.json
@@ -1,5 +1,5 @@
 {
-  "mqtt":["garden","192.168.10.115",1883,"test","test"],
+  "mqtt":["garden","192.168.10.114",1883,"test","test"],
   "ow":{
     "28FFADCE601705A3":{"emit":"t_soil1","item":"h_relay6"},
     "286164123FF96F55":{"emit":"t_soil2"},
@@ -17,6 +17,7 @@
     "h_auto":[6,29,1,1]
   },
   "in":{
+    "5": {"T":4,"emit": "/myhome/s_out/t_dht1"},
     "40":{"emit":"/myhome/s_out/g_in1","scmd":"CLOSED","rcmd":"OPEN"},
     "41":{"emit":"/myhome/s_out/g_in2","scmd":"CLOSED","rcmd":"OPEN"},
     "42":{"emit":"/myhome/s_out/g_in3","scmd":"CLOSED","rcmd":"OPEN"},
diff --git a/config-examples/c4-3e-1f-03-1b-1b.config.json b/config-examples/c4-3e-1f-03-1b-1b.config.json
index 7a9adbd..501a30d 100755
--- a/config-examples/c4-3e-1f-03-1b-1b.config.json
+++ b/config-examples/c4-3e-1f-03-1b-1b.config.json
@@ -6,4 +6,4 @@
   "in": {
     "5": {"T":4,"emit": "/myhome/s_out/t_vent_street"}
   }
-}
+}
\ No newline at end of file
diff --git a/lighthub/inputs.cpp b/lighthub/inputs.cpp
index 76e5fec..b1a5dd8 100644
--- a/lighthub/inputs.cpp
+++ b/lighthub/inputs.cpp
@@ -22,7 +22,7 @@ e-mail    anklimov@gmail.com
 #include "item.h"
 #include <PubSubClient.h>
 
-#ifndef WITHOUT_DHT
+#ifndef DHT_DISABLE
 #include "DHT.h"
 #endif
 
@@ -96,7 +96,7 @@ int Input::poll() {
 }
 
 void Input::dht22Poll() {
-#ifndef WITHOUT_DHT
+#ifndef DHT_DISABLE
     if (store->nextPollMillis > millis())
         return;
     DHT dht(pin, DHT22);
@@ -110,10 +110,10 @@ void Input::dht22Poll() {
         char addrstr[100] = "";
         strcat(addrstr, emit->valuestring);
         strcat(addrstr, "T");
-        sprintf(valstr, "%2.1f", temp);
+        printFloatValueToStr(temp, valstr);
         mqttClient.publish(addrstr, valstr);
         addrstr[strlen(addrstr) - 1] = 'H';
-        sprintf(valstr, "%2.1f", humidity);
+        printFloatValueToStr(humidity, valstr);
         mqttClient.publish(addrstr, valstr);
         store->nextPollMillis = millis() + DHT_POLL_DELAY_DEFAULT;
         Serial.print(" NextPollMillis=");Serial.println(store->nextPollMillis);
@@ -123,6 +123,23 @@ void Input::dht22Poll() {
 #endif
 }
 
+void Input::printFloatValueToStr(float temp, char *valstr) {
+    #if defined(__ESP__)
+    sprintf(valstr, "%2.1f", temp);
+    #endif
+    #if defined(__AVR__)
+    sprintf(valstr, "%d", (int)temp);
+    int fractional = 10.0*((float)abs(temp)-(float)abs((int)temp));
+    int val_len =strlen(valstr);
+    valstr[val_len]='.';
+    valstr[val_len+1]='0'+fractional;
+    valstr[val_len+2]='\0';
+    #endif
+    #if defined(__SAM3X8E__)
+    sprintf(valstr, "%2.1f", temp);
+    #endif
+}
+
 void Input::contactPoll() {
     boolean currentInputState;
     uint8_t inputPinMode, inputOnLevel;
diff --git a/lighthub/inputs.h b/lighthub/inputs.h
index 41e0e74..6055503 100644
--- a/lighthub/inputs.h
+++ b/lighthub/inputs.h
@@ -98,4 +98,6 @@ class Input
 
     void dht22Poll();
 
+
+    void printFloatValueToStr(float temp, char *valstr);
 };
diff --git a/lighthub/main.cpp b/lighthub/main.cpp
index 22cfa8a..fe5147c 100644
--- a/lighthub/main.cpp
+++ b/lighthub/main.cpp
@@ -120,10 +120,14 @@ PubSubClient mqttClient(ethClient);
 
 bool wifiInitialized;
 
+int mqtt_error_rate;
+
 bool IsThermostat(const aJsonObject *item);
 
 bool disabledDisconnected(const aJsonObject *thermoExtensionArray, int thermoLatestCommand);
 
+void resetFunc();
+
 void watchdogSetup(void) {
 //Serial.begin(115200);
 //Serial.println("Watchdog armed.");
@@ -184,6 +188,7 @@ void mqttCallback(char *topic, byte *payload, unsigned int length) {
         } //valid item
 }
 
+
 #ifndef __ESP__
 
 void printIPAddress() {
@@ -270,6 +275,9 @@ int lanLoop() {
                 Serial.print(F("'ip [ip[,dns[,gw[,subnet]]]]' - set static IP\n"));
                 lanStatus = -10;
                 lanCheck = millis() + 60000;
+#ifdef RESET_PIN
+                resetFunc();
+#endif
             } else {
                 printIPAddress();
                 lanStatus = 1;
@@ -324,6 +332,7 @@ int lanLoop() {
 
                     wdt_dis();  //potential unsafe for ethernetIdle(), but needed to avoid cyclic reboot if mosquitto out of order
                     if (mqttClient.connect(client_id, user, password)) {
+                        mqtt_error_rate=0;
                         Serial.print(F("connected as "));
                         Serial.println(client_id);
                     wdt_en();
@@ -350,6 +359,13 @@ int lanLoop() {
                         Serial.print(mqttClient.state());
                         Serial.println(F(" try again in 5 seconds"));
                         lanCheck = millis() + 5000;
+#ifdef RESET_PIN
+                        mqtt_error_rate++;
+                        if(mqtt_error_rate>50){
+                            Serial.print(F("Too many MQTT connection errors. Resetting."));
+                            resetFunc();
+                        }
+#endif
                         lanStatus = 12;
                     }
                 }
@@ -448,6 +464,24 @@ int lanLoop() {
     return lanStatus;
 
 }
+
+void (*softResetFunc)(void) = 0;
+
+void resetFunc() {
+#ifdef RESET_PIN
+    Serial.println(F("Reset arduino with digital pin "));
+    Serial.print(QUOTE(RESET_PIN));
+    delay(1000);
+    pinMode(RESET_PIN, OUTPUT);
+    digitalWrite(RESET_PIN,LOW);
+    delay(1000);
+    digitalWrite(RESET_PIN,HIGH);
+#endif
+    Serial.println(F("Hardware reset not working! Use soft reset... "));
+    delay(1000);
+    softResetFunc();
+}
+
 #ifdef _owire
 
 void Changed(int i, DeviceAddress addr, int val) {
@@ -488,7 +522,6 @@ void Changed(int i, DeviceAddress addr, int val) {
 
 #endif //_owire
 
-
 void cmdFunctionHelp(int arg_cnt, char **args)
 //(char* tokens)
 {
@@ -501,7 +534,8 @@ void cmdFunctionHelp(int arg_cnt, char **args)
                              "'load' - load config from NVRAM\n"
                              "'pwd' - define MQTT password\n"
                              "'kill' - test watchdog\n"
-                             "'clear' - clear EEPROM"));
+                             "'clear' - clear EEPROM\n"
+                             "'reboot' - reboot controller"));
 }
 
 void cmdFunctionKill(int arg_cnt, char **args) {
@@ -511,6 +545,11 @@ void cmdFunctionKill(int arg_cnt, char **args) {
     };
 }
 
+void cmdFunctionReboot(int arg_cnt, char **args) {
+    Serial.println(F("Rebooting..."));
+    resetFunc();
+}
+
 void applyConfig() {
   if (!root) return;
 
@@ -1041,7 +1080,7 @@ void printFirmwareVersionAndBuildOptions() {
 #else
     Serial.println(F("(+)OWIRE"));
 #endif
-#ifndef WITHOUT_DHT
+#ifndef DHT_DISABLE
     Serial.println(F("(+)DHT"));
 #else
     Serial.println(F("(-)DHT"));
@@ -1055,6 +1094,13 @@ void printFirmwareVersionAndBuildOptions() {
     Serial.println(F("(+)SDCARD"));
 #endif
 
+#ifdef RESET_PIN
+    Serial.println(F("(+)HARDRESET on pin="));
+    Serial.print(F(QUOTE(RESET_PIN)));
+#else
+    Serial.println("(-)HARDRESET, using soft");
+#endif
+
 
 }
 
@@ -1095,6 +1141,7 @@ void setupCmdArduino() {
     cmdAdd("ip", cmdFunctionIp);
     cmdAdd("pwd", cmdFunctionPwd);
     cmdAdd("clear",cmdFunctionClearEEPROM);
+    cmdAdd("reboot",cmdFunctionReboot);
 }
 
 void loop_main() {