diff --git a/lighthub/item.cpp b/lighthub/item.cpp
index adc0318..3cf51f5 100644
--- a/lighthub/item.cpp
+++ b/lighthub/item.cpp
@@ -23,16 +23,17 @@ e-mail    anklimov@gmail.com
 #include "utils.h"
 
 #ifdef _dmxout
-
 #include "dmx.h"
 #include "FastLED.h"
-
 #endif
 
+#ifndef MODBUS_DISABLE
 #include <ModbusMaster.h>
+#endif
 #include <PubSubClient.h>
 
 
+
 short modbusBusy = 0;
 extern aJsonObject *pollingItem;
 
@@ -1266,7 +1267,10 @@ int Item::SendStatus(short cmd, short n, int *Par, boolean deffered) {
                 if (Par)
                     for (short i = 0; i < n; i++) {
                         char num[4];
+                        #ifndef FLASH_64KB
                         snprintf(num, sizeof(num), "%d", Par[i]);
+                        #endif
+                        itoa(Par[i],num,10);
                         strncat(valstr, num, sizeof(valstr));
                         if (i != n - 1) {
                             strcpy(num, ",");
diff --git a/lighthub/main.cpp b/lighthub/main.cpp
index f6f68f0..4d77acf 100644
--- a/lighthub/main.cpp
+++ b/lighthub/main.cpp
@@ -94,12 +94,13 @@ WiFiClient ethClient;
 #endif
 
 #ifdef ARDUINO_ARCH_STM32F1
+#include "HttpClient.h"
 //#include <EthernetClient.h>
 //#include "UIPEthernet.h"
 //#include "UIPUdp.h"
 #include <SPI.h>
 #include <Ethernet_STM.h>
-#include "HttpClient.h"
+
 #include "Dns.h"
 //#include "utility/logging.h"
 #include <EEPROM.h>
@@ -126,10 +127,18 @@ aJsonObject *items = NULL;
 aJsonObject *inputs = NULL;
 
 aJsonObject *mqttArr = NULL;
+#ifndef MODBUS_DISABLE
 aJsonObject *modbusArr = NULL;
+#endif
+#ifdef _owire
 aJsonObject *owArr = NULL;
+#endif
+#ifdef _dmxout
 aJsonObject *dmxArr = NULL;
+#endif
+#ifdef SYSLOG_ENABLE
 aJsonObject *udpSyslogArr = NULL;
+#endif
 
 unsigned long nextPollingCheck = 0;
 unsigned long nextInputCheck = 0;
@@ -378,7 +387,6 @@ void ip_ready_config_loaded_connecting_to_broker() {
         mqttClient.setCallback(mqttCallback);
 
         debugSerial<<F("\nAttempting MQTT connection to ")<<servername<<F(":")<<port<<F(" user:")<<user<<F(" ...");
-
         wdt_dis();  //potential unsafe for ethernetIdle(), but needed to avoid cyclic reboot if mosquitto out of order
         if (mqttClient.connect(client_id, user, password)) {
             mqttErrorRate = 0;
@@ -619,7 +627,6 @@ void cmdFunctionHelp(int arg_cnt, char **args)
                           "'clear' - clear EEPROM\n"
                           "'reboot' - reboot controller");
 }
-
 void printCurentLanConfig() {
     debugSerial << F("Current LAN config(ip,dns,gw,subnet):");
     printIPAddress(Ethernet.localIP());
@@ -712,7 +719,9 @@ void applyConfig() {
     }
     inputs = aJson.getObjectItem(root, "in");
     mqttArr = aJson.getObjectItem(root, "mqtt");
+#ifdef SYSLOG_ENABLE
     udpSyslogArr = aJson.getObjectItem(root, "syslog");
+#endif
     printConfigSummary();
 }
 
@@ -721,14 +730,20 @@ void printConfigSummary() {
     printBool(items);
     debugSerial<<F("\ninputs ");
     printBool(inputs);
+#ifndef MODBUS_DISABLE
     debugSerial<<F("\nmodbus ");
     printBool(modbusArr);
+#endif
     debugSerial<<F("\nmqtt ");
     printBool(mqttArr);
+#ifdef _owire
     debugSerial<<F("\n1-wire ");
     printBool(owArr);
+#endif
+#ifdef SYSLOG_ENABLE
     debugSerial<<F("\nudp syslog ");
     printBool(udpSyslogArr);
+#endif
     debugSerial << eol;
 }
 
@@ -759,6 +774,7 @@ int loadConfigFromEEPROM()
         debugSerial<<F("\nNo stored config\n");
         return 0;
     }
+    return 0;
 }
 
 void cmdFunctionReq(int arg_cnt, char **args) {
@@ -873,8 +889,7 @@ void cmdFunctionGet(int arg_cnt, char **args) {
     //restoreState();
 }
 
-void printBool(bool arg) { (arg) ? debugSerial<<F("on") : debugSerial<<F("off"); }
-
+void printBool(bool arg) { (arg) ? debugSerial<<F("+") : debugSerial<<F("-"); }
 
 void saveFlash(short n, char *str) {
     short i;
@@ -902,7 +917,6 @@ int ipLoadFromFlash(short n, IPAddress &ip) {
         ip[i] = EEPROM.read(n++);
     return (ip[0] && (ip[0] != 0xff));
 }
-
 lan_status loadConfigFromHttp(int arg_cnt, char **args)
 {
     int responseStatusCode = 0;
@@ -918,7 +932,13 @@ lan_status loadConfigFromHttp(int arg_cnt, char **args)
     snprintf(URI, sizeof(URI), "/%02x-%02x-%02x-%02x-%02x-%02x.config.json", mac[0], mac[1], mac[2], mac[3], mac[4],
              mac[5]);
 #else
+#ifndef FLASH_64KB
     snprintf(URI, sizeof(URI), "/%s_config.json",QUOTE(DEVICE_NAME));
+#else
+    strncpy_P(URI, "/", sizeof(URI));
+    strncat(URI, QUOTE(DEVICE_NAME), sizeof(URI));
+    strncat(URI, "_config.json", sizeof(URI));
+#endif
 #endif
     debugSerial<<F("Config URI: http://")<<configServer<<URI<<eol;
 
@@ -1002,22 +1022,13 @@ lan_status loadConfigFromHttp(int arg_cnt, char **args)
 
         if (!root) {
             debugSerial<<F("Config parsing failed\n");
-            // nextLanCheckTime=millis()+15000;
             return READ_RE_CONFIG;//-11; //Load from NVRAM
         } else {
-            /*
-            char * outstr=aJson.print(root);
-            debugSerial<<outstr);
-            free (outstr);
-             */
             debugSerial<<response;
             applyConfig();
-
-
         }
     } else {
         debugSerial<<F("Config retrieving failed\n");
-        //nextLanCheckTime=millis()+15000;
         return READ_RE_CONFIG;//-11; //Load from NVRAM
     }
 #endif
@@ -1225,7 +1236,9 @@ void setupCmdArduino() {
     cmdAdd("save", cmdFunctionSave);
     cmdAdd("load", cmdFunctionLoad);
     cmdAdd("get", cmdFunctionGet);
+#ifndef FLASH_64KB
     cmdAdd("mac", cmdFunctionSetMac);
+#endif
     cmdAdd("kill", cmdFunctionKill);
     cmdAdd("req", cmdFunctionReq);
     cmdAdd("ip", cmdFunctionIp);
@@ -1368,7 +1381,6 @@ void thermoLoop(void) {
     if (millis() < nextThermostatCheck)
         return;
     bool thermostatCheckPrinted = false;
-
     for (aJsonObject *thermoItem = items->child; thermoItem; thermoItem = thermoItem->next) {
         if (isThermostatWithMinArraySize(thermoItem, 5)) {
             aJsonObject *thermoExtensionArray = aJson.getArrayItem(thermoItem, I_EXT);
diff --git a/lighthub/main.h b/lighthub/main.h
index 1ee34b2..b8c8ea4 100644
--- a/lighthub/main.h
+++ b/lighthub/main.h
@@ -55,13 +55,17 @@
 #include <SPI.h>
 #include "utils.h"
 #include <string.h>
-#include <ModbusMaster.h>
 #include "aJSON.h"
 #include <Cmd.h>
 #include "stdarg.h"
 #include "item.h"
 #include "inputs.h"
 
+
+#ifndef MODBUS_DISABLE
+#include <ModbusMaster.h>
+#endif
+
 #ifndef ARDUINO_ARCH_STM32F1
 #include "FastLED.h"
 #endif
diff --git a/lighthub/options.h b/lighthub/options.h
index 87bbde6..3654d89 100644
--- a/lighthub/options.h
+++ b/lighthub/options.h
@@ -158,6 +158,8 @@
 
 #ifndef Wiz5500
 #define W5100_ETHERNET_SHIELD
+#else
+#define W5500_ETHERNET_SHIELD
 #endif
 
 #define eol "\n"
diff --git a/lighthub/utils.cpp b/lighthub/utils.cpp
index db88ab5..ba8eaac 100644
--- a/lighthub/utils.cpp
+++ b/lighthub/utils.cpp
@@ -100,11 +100,13 @@ extern char _end;
 extern "C" char *sbrk(int i);
 
 unsigned long freeRam() {
+#ifndef DISABLE_FREERAM_PRINT
     char *heapend = sbrk(0);
     register char *stack_ptr asm( "sp" );
     struct mallinfo mi = mallinfo();
-
     return stack_ptr - heapend + mi.fordblks;
+#endif
+    return 7777;
 }
 
 #endif
@@ -156,6 +158,8 @@ void printFloatValueToStr(float value, char *valstr) {
 
 #define ARDBUFFER 16 //Buffer for storing intermediate strings. Performance may vary depending on size.
 
+#ifndef ARDUINO_ARCH_STM32F1
+
 int log(const char *str, ...)//TODO: __FlashStringHelper str support
 {
     int i, count=0, j=0, flag=0;
@@ -207,6 +211,7 @@ int log(const char *str, ...)//TODO: __FlashStringHelper str support
     Serial.println(); //Print trailing newline
     return count + 1; //Return number of arguments detected
 }
+#endif
 
 
 #pragma message(VAR_NAME_VALUE(debugSerial))
diff --git a/platformio.ini b/platformio.ini
index 7fc4ad3..b7e88a6 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -9,19 +9,19 @@
 ; http://docs.platformio.org/page/projectconf.html
 [platformio]
 src_dir = lighthub
-env_default =
+;env_default =
 ;    megaatmega2560
 ;    megaatmega2560-net
 ;    due
 ;    esp8266
 ;    esp32
 ;    megaatmega2560-5500
-     due-5500
+;     due-5500
 ;    controllino
 ;    stm32
 
-build_dir = /tmp/pioenvs
-libdeps_dir = /tmp/piolibdeps
+;build_dir = /tmp/pioenvs
+;libdeps_dir = /tmp/piolibdeps
 
 [env:esp32]
 platform = espressif32
@@ -247,35 +247,37 @@ lib_deps =
     https://github.com/livello/PrintEx#is-select-redecl
 
 ;TODO:STM32 compilation problems
-;[env:stm32]
-;platform = ststm32
-;framework = arduino
-;board = nucleo_f103rb
-;upload_protocol = stlink
-;debug_tool = stlink
-;build_flags = !bash check_custom_build_flags_stm32.sh
-;lib_ignore =
-;    DHT sensor library for ESPx
-;    DmxDue
-;    DueFlashStorage
-;    ESP-Dmx
-;    WifiManager
-;    FastLED
-;    Ethernet
-;lib_deps =
+[env:stm32]
+platform = ststm32
+framework = arduino
+board = nucleo_f103rb
+upload_protocol = stlink
+debug_tool = stlink
+build_flags = !bash check_custom_build_flags_stm32.sh
+lib_ignore =
+    DHT sensor library for ESPx
+    DmxDue
+    DueFlashStorage
+    ESP-Dmx
+    WifiManager
+    FastLED
+    Ethernet
+    https://github.com/anklimov/Ethernet
+    DMXSerial
+    DmxSimple
+    httpClient
+    SD
+    PrintEx
+    Ethernet2
+    Artnet
+
+
+lib_deps =
 ;    DallasTemperature
-;    https://github.com/anklimov/aJson
-;    https://github.com/anklimov/CmdArduino
-;    ArduinoHttpClient
-;    https://github.com/anklimov/ModbusMaster
-;;    https://github.com/Serasidis/Ethernet_STM.git
-;;    https://github.com/livello/Ethernet_STM.git
-;    https://github.com/knolleary/pubsubclient.git
-;    Adafruit Unified Sensor
-;    DHT sensor library
-;;    https://github.com/anklimov/DMXSerial
-;;    Syslog
-;;    https://github.com/No3x/Syslog.git
-;    https://github.com/arcao/Syslog.git
-;;    UIPEthernet
-;    Streaming
+    https://github.com/anklimov/aJson
+    https://github.com/anklimov/CmdArduino
+    ArduinoHttpClient
+    https://github.com/knolleary/pubsubclient.git
+    Adafruit Unified Sensor
+    DHT sensor library
+    Streaming