diff --git a/README.md b/README.md
index 1295506..95f5522 100644
--- a/README.md
+++ b/README.md
@@ -87,19 +87,18 @@ https://geektimes.ru/post/273852/ // Good tutorial for fast start in RUSSIAN
 In linux you can open terminal, navigate to your programming directory, then
 
 * git clone https://github.com/anklimov/lighthub.git
-
 * cd lighthub
-
 * pio init --ide clion // use your IDE, others here: http://docs.platformio.org/en/latest/ide.html
-
-* export PLATFORMIO_BUILD_FLAGS="-DMY_CONFIG_SERVER=192.168.1.1 -DWATCH_DOG_TICKER_DISABLE=1"
-
-set ip address of your configuration server and disable wdt feature in case bootloader of your mega2560 is stock
-
 * pio run -e due // this will build firmware for arduino due board
-
 * rm -Rf .piolibdeps // this will clean libraries folder. Try it if you have compilation problem
-
 * pio run -e megaatmega2560 //build for arduino mega
-
 * pio run -e due -t upload //build and upload firmware to arduino due
+
+# Custom build flags
+
+* MY_CONFIG_SERVER=192.168.1.1 // address of external JSON-config http://192.168.1.1/de-ad-be-ef-fe-00.config.json
+* WATCH_DOG_TICKER_DISABLE=1 //disable wdt feature
+* USE_1W_PIN=49 // use direct connection to 1W devices, no I2C bridge DS2482-100
+
+export PLATFORMIO_BUILD_FLAGS="-DMY_CONFIG_SERVER=192.168.1.1 -DWATCH_DOG_TICKER_DISABLE=1 -DUSE_1W_PIN=49"
+
diff --git a/lighthub/main.cpp b/lighthub/main.cpp
index 035984d..a51cad4 100644
--- a/lighthub/main.cpp
+++ b/lighthub/main.cpp
@@ -132,9 +132,6 @@ EthernetClient ethClient;
 #include "dmx.h"
 #endif
 
-#define Q(x) #x
-#define QUOTE(x) Q(x)
-
 #ifndef PIO_SRC_REV
 #define PIO_SRC_REV v0.98
 #endif
@@ -148,7 +145,7 @@ EthernetClient ethClient;
 extern Artnet *artnet;
 #endif
 
-#ifdef _sd
+#ifdef SD_CARD_INSERTED
 #include "sd_card_w5100.h"
 #endif
 
@@ -904,12 +901,15 @@ void postTransmission()
 }
 
 void setup_main() {
-    cmdInit(115200);
+    cmdInit(uint32_t(SERIAL_BAUD));
 
     Serial.print(F("\nLazyhome.ru LightHub controller "));
     Serial.println(F(QUOTE(PIO_SRC_REV)));
+#ifdef WATCH_DOG_TICKER_DISABLE
+    Serial.println(F("WATCHDOG TICKER DISABLED"));
+#endif
 
-#ifdef _sd
+#ifdef SD_CARD_INSERTED
     sd_card_w5100_setup();
 #endif
 
diff --git a/lighthub/main.h b/lighthub/main.h
index 16ce1e9..2addc1c 100644
--- a/lighthub/main.h
+++ b/lighthub/main.h
@@ -5,7 +5,10 @@
 #ifndef LIGHTHUB_MAIN_H
 #define LIGHTHUB_MAIN_H
 
-#endif //LIGHTHUB_MAIN_H
+
+#ifndef  SERIAL_BAUD
+#define SERIAL_BAUD 115200
+#endif
 
 #include "Arduino.h"
 #include "DallasTemperature.h"
@@ -45,3 +48,4 @@ void inputLoop(void);
 void modbusLoop(void);
 void thermoLoop(void);
 short thermoSetCurTemp(char * name, short t);
+#endif //LIGHTHUB_MAIN_H
\ No newline at end of file
diff --git a/lighthub/options.h b/lighthub/options.h
index 9517d24..ce8d76e 100644
--- a/lighthub/options.h
+++ b/lighthub/options.h
@@ -32,3 +32,6 @@
 #ifndef _dmxout
 #undef _artnet
 #endif
+
+#define Q(x) #x
+#define QUOTE(x) Q(x)
\ No newline at end of file
diff --git a/lighthub/owTerm.cpp b/lighthub/owTerm.cpp
index 7bbcf87..a435a4c 100644
--- a/lighthub/owTerm.cpp
+++ b/lighthub/owTerm.cpp
@@ -80,10 +80,13 @@ while (net && net->wireSearch(term[t_count])>0 && (t_count<t_max) && finish > mi
 int owSetup(owChangedType owCh) {
   //// todo - move memory allocation to here
 
-#ifdef _2482   
+#ifdef DS2482_100_I2C_TO_1W_BRIDGE
+    Serial.println(F("DS2482_100_I2C_TO_1W_BRIDGE init"));
 net = new OneWire;
 #else
-net = new OneWire (ONE_WIRE_BUS);
+    Serial.print(F("One wire setup on PIN:"));
+    Serial.println(QUOTE(USE_1W_PIN));
+net = new OneWire (USE_1W_PIN);
 #endif
 
 
@@ -97,7 +100,7 @@ wstat = new   uint16_t  [t_max];
 
 
   
-  #ifdef _2482
+  #ifdef DS2482_100_I2C_TO_1W_BRIDGE
   Wire.begin(); 
   if (net->checkPresence())
   {
diff --git a/lighthub/owTerm.h b/lighthub/owTerm.h
index 5ff225d..18cf543 100644
--- a/lighthub/owTerm.h
+++ b/lighthub/owTerm.h
@@ -47,8 +47,6 @@ e-mail    anklimov@gmail.com
 #define recheck_interval 5
 #define check_circle 2000/t_count
 
-
-
 #define t_max 20 //Maximum number of 1w devices
 #define TEMPERATURE_PRECISION 9
 
@@ -59,13 +57,12 @@ e-mail    anklimov@gmail.com
 extern aJsonObject *owArr;
 
 typedef   void (*owChangedType) (int , DeviceAddress, int) ;
+#ifndef USE_1W_PIN
+#define DS2482_100_I2C_TO_1W_BRIDGE // HW driver
+#endif
 
-#define _2482 // HW driver
-
-#ifdef _2482
-#include <Wire.h>   
-#else
-#define ONE_WIRE_BUS A0
+#ifdef DS2482_100_I2C_TO_1W_BRIDGE
+#include <Wire.h>
 #endif
 
 extern OneWire *net;
diff --git a/platformio.ini b/platformio.ini
index c5d2eee..031343f 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -10,8 +10,8 @@
 [platformio]
 src_dir = lighthub
 env_default =
-          megaatmega2560
-;          due
+;          megaatmega2560
+          due
 
 [env:due]
 platform = atmelsam