diff --git a/avrIOhelper/io-helper.h b/avrIOhelper/io-helper.h
index 8504dbc..194b702 100644
--- a/avrIOhelper/io-helper.h
+++ b/avrIOhelper/io-helper.h
@@ -81,6 +81,8 @@ void ioHelperEdgeDetector(void);
 #define LED_PLC_OK              BitPL5
 #define LED_BUS_OK              BitPL3
 
+#define LED_EXTR_ONOFF              BitPL3
+
 #define LIFT_MOTOR_DIR          BitPL6
 
 //Inputs
@@ -115,11 +117,15 @@ void ioHelperEdgeDetector(void);
 #define BTN_LIFT_UP             BitPinD7
 #define BTN_LIFT_DOWN           BitPinG2
 
+#define BTN_EXTR_ON             8
+#define BTN_EXTR_OFF            9
+
 #define IN_ANLAGE_EIN_INV       BitPinF7
 #define IN_NOTAUS_ANLAGE_R      BitPinK5
 #define IN_NOTAUS_ANLAGE        BitPinK4
 #define IN_NOTAUS_SCHRANK       BitPinK6
 
 #define MOD_OUT_HEIZEN_LED      1
+#define MOD_OUT_EXTR_LED        6
 
 #endif
diff --git a/compile_flags.txt b/compile_flags.txt
index 4e0c1cc..2561953 100644
--- a/compile_flags.txt
+++ b/compile_flags.txt
@@ -1,3 +1,4 @@
+--target=avr
 -D
 __AVR_ATmega2560__
 -D
diff --git a/gefran_gtf.c b/gefran_gtf.c
new file mode 100644
index 0000000..f1b8a9e
--- /dev/null
+++ b/gefran_gtf.c
@@ -0,0 +1,16 @@
+#include "modbus-master.h"
+#include <stdint.h>
+
+#define FIRMWARE_VERSION 120
+
+uint16_t gtf_firmware_version(uint8_t address){
+    uint16_t val = 0;
+    readReg(address, FIRMWARE_VERSION, 1);
+    int8_t res = wait_receive(1, &val, 250);
+
+    if(!res)
+        return val;
+    else
+        return res;
+}
+
diff --git a/gefran_gtf.h b/gefran_gtf.h
new file mode 100644
index 0000000..1b1a1ab
--- /dev/null
+++ b/gefran_gtf.h
@@ -0,0 +1,2 @@
+
+uint16_t gtf_firmware_version(uint8_t address);
diff --git a/kraftsensor.c b/kraftsensor.c
index b105b5c..1633ceb 100644
--- a/kraftsensor.c
+++ b/kraftsensor.c
@@ -18,7 +18,7 @@ void do_kraftsensor(){
 
     /* read 2 16bit values and merge to 32bit signed integer */
     readReg(1,0,2);
-    if(wait_receive(2, m_data, 10)){
+    if(wait_receive(2, m_data, 100)){
         kraftsensor_valid = 0;
         printf("modbus error\n\r");
     }
diff --git a/main.c b/main.c
index 6e25824..3394f36 100644
--- a/main.c
+++ b/main.c
@@ -2,6 +2,7 @@
 #include <avr/interrupt.h>
 #include <avr/wdt.h> // WatchDog          
 #include <stdint.h>
+#include <stdio.h>
 #include <string.h>
 
 #include "Ethernet/socket.h"
@@ -19,6 +20,7 @@
 #include "modbus.h"
 #include "modbus-master.h"
 #include "modbus_io_slave.h"
+#include "gefran_gtf.h"
 
 #include "util/delay.h"
 
@@ -194,13 +196,14 @@ int main(){
     ioHelperSetBit(outStates,  BitPG5,  1);
 
     uint32_t timer_blink_outs = millis();
-    uint32_t timer_send_uptime = millis();
-    uint32_t timer_send_info = millis();
     uint32_t timer_read_slave = millis();
+#ifdef PLC_MQTT_ENABLED
+    uint32_t timer_send_info = millis();
+    uint32_t timer_send_uptime = millis();
+#endif
 
     //printf("anlage: %x\n\r", read_Input(IN_ANLAGE_EIN_INV, LEVEL));
 
-    uint16_t tgl = 0;
     while(1)
     {
         wdt_reset(); // WDT reset at least every sec
@@ -221,16 +224,26 @@ int main(){
 
 #if PLC_MQTT_ENABLED
             char msg[64];
-            sprintf(msg, "%d", kraftsensor_value);
+            sprintf(msg, "%ld", kraftsensor_value);
             mqtt_pub(&mqtt_client, "/Filamentanlage/01_Extruder/kraft", msg, strlen(msg));
 #endif
 
-            modbus_io_set_Output(4, 0, TOGGLE);
+            //modbus_io_set_Output(4, 0, TOGGLE);
+            //printf("gefran: 0x%02X\n", gtf_firmware_version(1));
+            //printf("gefran: 0x%02X\n", gtf_firmware_version(2));
+            //printf("gefran: 0x%02X\n", gtf_firmware_version(3));
+            //printf("gefran: 0x%02X\n", gtf_firmware_version(4));
+            //printf("gefran: 0x%02X\n", gtf_firmware_version(5));
+            //printf("gefran: 0x%02X\n", gtf_firmware_version(6));
+            //printf("gefran: 0x%02X\n", gtf_firmware_version(7));
+            //printf("gefran: 0x%02X\n", gtf_firmware_version(8));
+            //printf("gefran: 0x%02X\n", gtf_firmware_version(9));
+            //printf("gefran: 0x%02X\n", gtf_firmware_version(10));
+            //printf("\n");
         }
 
-        if(millis() - timer_read_slave > 100){
+        if(millis() - timer_read_slave > 200){
             timer_read_slave = millis();
-            //readInputState(4, 200, 32);
             modbus_io_read();
 
             if(modbus_io_read_Input(16, RISING))
@@ -238,8 +251,6 @@ int main(){
             if(modbus_io_read_Input(17, RISING))
                 modbus_io_set_Output(4, 3, OFF);
 
-
-            //printf("read inputs: 0x%02X 0x%02X 0x%02X 0x%02X\n", inp[3], inp[2], inp[1], inp[0]);
         }
 
         if(read_Input(BTN_HEIZEN_AN, RISING)){
@@ -251,14 +262,23 @@ int main(){
 
         if(read_Input(BTN_LIFT_UP, LEVEL)){
             set_Output(LIFT_MOTOR_DIR, 1);
-            TCCR3B |= _BV(CS31);
+            TCCR3B |= _BV(CS30);
         }
         else if(read_Input(BTN_LIFT_DOWN, LEVEL)){
             set_Output(LIFT_MOTOR_DIR, 0);
-            TCCR3B |= _BV(CS31);
+            TCCR3B |= _BV(CS30);
         }
         else
-            TCCR3B &= ~_BV(CS31);
+            TCCR3B &= ~_BV(CS30);
+
+        if(read_Input(BTN_EXTR_ON, RISING)){
+            TCCR1B |= _BV(CS11);
+            modbus_io_set_Output(4, MOD_OUT_EXTR_LED, 1);
+        }
+        if(read_Input(BTN_EXTR_OFF, RISING)){
+            TCCR1B &= ~_BV(CS11);
+            modbus_io_set_Output(4, MOD_OUT_EXTR_LED, 0);
+        }
 
 #if PLC_MQTT_ENABLED
         // send misc info
@@ -279,14 +299,6 @@ int main(){
         }
 #endif
 
-        //if(read_Input(IN_ANLAGE_EIN_INV, FALLING)){
-        //    printf("anlage ein\n\r");
-        //}
-        //    ioHelperSetBit(outStates, LED_GRN_NOTAUS_SCHRANK, 1);
-        //}
-        //else{
-        //    ioHelperSetBit(outStates, LED_GRN_NOTAUS_SCHRANK, 0);
-        //}
         do_notaus();
 
 #if PLC_MQTT_ENABLED
@@ -296,8 +308,7 @@ int main(){
         ioHelperSetBit(outStates, LED_BUS_OK, 0);
 #endif
         ioHelperSetOuts();
-}
-return 0;
+    }
 }
 
 // Timer0
@@ -313,16 +324,13 @@ void timer0_init(void)
 
 void timer1_init()
 {
-    TCCR3A |= (1<<COM3B1);
-    TCCR3B |= _BV(WGM33);
-
-    ICR3 = 100;
-    OCR3A = 50;
+    TCCR1A |= (1<<COM1A1);
+    TCCR1B |= _BV(WGM13);
 
-    DDRE |= 1 << 4;
-    TIMSK3 |= 1<<TOIE3;
+    ICR1 = 100;
+    OCR1A = 50;
 
-    TCCR3B |= _BV(CS31);
+    DDRB |= 1 << 5;
 }
 
 void timer3_init()
@@ -330,8 +338,8 @@ void timer3_init()
     TCCR3A |= (1<<COM3B1);
     TCCR3B |= _BV(WGM33);
 
-    ICR3 = 100;
-    OCR3B = 50;
+    ICR3 = 60;
+    OCR3B = 30;
 
     DDRE |= 1 << 4;
 }
@@ -352,6 +360,7 @@ static void avr_init(void)
     wdt_reset(); // wdt reset ~ every <2000ms
 
     timer0_init();// Timer0 millis engine init
+    timer1_init();
     timer3_init();
     DDRL |= 1<<6;
     uart_init();
diff --git a/modbus.h b/modbus.h
index eae774c..4d8ce44 100644
--- a/modbus.h
+++ b/modbus.h
@@ -52,7 +52,7 @@ THE POSSIBILITY OF SUCH DAMAGE.
 
 /* define baudrate of modbus */
 #ifndef BAUD
-#define BAUD 38400L
+#define BAUD 19200L 
 #endif
 
 /*
diff --git a/mqtt.c b/mqtt.c
index 34eb0e6..82e11e7 100644
--- a/mqtt.c
+++ b/mqtt.c
@@ -35,7 +35,7 @@ void messageArrived(MessageData* md)
 
 void mqtt_pub(Client* mqtt_client, char * mqtt_topic, char * mqtt_msg, int mqtt_msg_len)
 {
-	static uint32_t mqtt_pub_count = 0;
+	//static uint32_t mqtt_pub_count = 0;
 	static uint8_t mqtt_err_cnt = 0;
 	int32_t mqtt_rc;