diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index 855c0823..a39339e4 100644
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -121,6 +121,8 @@
 #include <SPI.h>
 #endif
 
+#include "mmu.h"
+
 #define VERSION_STRING  "1.0.2"
 
 
@@ -292,11 +294,13 @@ CardReader card;
 unsigned long PingTime = millis();
 unsigned long NcTime;
 
-union Data
-{
-byte b[2];
-int value;
-};
+
+//used for PINDA temp calibration and pause print
+#define DEFAULT_RETRACTION    1
+#define DEFAULT_RETRACTION_MM 4 //MM
+
+float default_retraction = DEFAULT_RETRACTION;
+
 
 float homing_feedrate[] = HOMING_FEEDRATE;
 // Currently only the extruder axis may be switched to a relative mode.
@@ -673,12 +677,12 @@ void crashdet_disable()
 
 void crashdet_stop_and_save_print()
 {
-	stop_and_save_print_to_ram(10, -DEFAULT_RETRACTION); //XY - no change, Z 10mm up, E -1mm retract
+	stop_and_save_print_to_ram(10, -default_retraction); //XY - no change, Z 10mm up, E -1mm retract
 }
 
 void crashdet_restore_print_and_continue()
 {
-	restore_print_from_ram_and_continue(DEFAULT_RETRACTION); //XYZ = orig, E +1mm unretract
+	restore_print_from_ram_and_continue(default_retraction); //XYZ = orig, E +1mm unretract
 //	babystep_apply();
 }
 
@@ -3121,29 +3125,25 @@ void gcode_M600(bool automatic, float x_position, float y_position, float z_shif
 		lcd_change_fil_state = 0;
 		
 		// Unload filament
-#if defined (SNMM) || defined (SNMM_V2) 
-		extr_unload(); //unload just current filament for multimaterial printers (used also in M702)
-#else
-		unload_filament(); //unload filament for single material (used also in M702)
-#endif 
+		if (mmu_enabled)
+			extr_unload(); //unload just current filament for multimaterial printers (used also in M702)
+		else
+			unload_filament(); //unload filament for single material (used also in M702)
 		//finish moves
 		st_synchronize();
 
-			
-#if !defined(SNMM_V2) && !defined(SNMM)
+		if (!mmu_enabled)
+		{
 			KEEPALIVE_STATE(PAUSED_FOR_USER);
 			lcd_change_fil_state = lcd_show_fullscreen_message_yes_no_and_wait_P(_i("Was filament unload successful?"), false, true);////MSG_UNLOAD_SUCCESSFUL c=20 r=2
 			if (lcd_change_fil_state == 0) lcd_show_fullscreen_message_and_wait_P(_i("Please open idler and remove filament manually."));////MSG_CHECK_IDLER c=20 r=4
-			
 			lcd_update_enable(true);
-		
-#endif
+		}
 
-#ifdef SNMM_V2
-		mmu_M600_load_filament(automatic);
-#else		
-		M600_load_filament();
-#endif    
+		if (mmu_enabled)
+			mmu_M600_load_filament(automatic);
+		else
+			M600_load_filament();
 
 		if(!automatic) M600_check_state();
 
@@ -3191,70 +3191,70 @@ void gcode_M701()
 {
 	printf_P(PSTR("gcode_M701 begin\n"));
 
-#if defined (SNMM) || defined (SNMM_V2)
-	extr_adj(snmm_extruder);//loads current extruder
-#else //defined (SNMM) || defined (SNMM_V2)
-	enable_z();
-	custom_message = true;
-	custom_message_type = 2;
+	if (mmu_enabled)
+		extr_adj(snmm_extruder);//loads current extruder
+	else
+	{
+		enable_z();
+		custom_message = true;
+		custom_message_type = 2;
 
 #ifdef FILAMENT_SENSOR
-	fsensor_oq_meassure_start(40);
+		fsensor_oq_meassure_start(40);
 #endif //FILAMENT_SENSOR
 
-	lcd_setstatuspgm(_T(MSG_LOADING_FILAMENT));
-	current_position[E_AXIS] += 40;
-	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 400 / 60, active_extruder); //fast sequence
-	st_synchronize();
+		lcd_setstatuspgm(_T(MSG_LOADING_FILAMENT));
+		current_position[E_AXIS] += 40;
+		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 400 / 60, active_extruder); //fast sequence
+		st_synchronize();
 
-	if (current_position[Z_AXIS] < 20) current_position[Z_AXIS] += 30;
-	current_position[E_AXIS] += 30;
-	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 400 / 60, active_extruder); //fast sequence
-	st_synchronize();
-	current_position[E_AXIS] += 25;
-	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 100 / 60, active_extruder); //slow sequence
-	st_synchronize();
+		if (current_position[Z_AXIS] < 20) current_position[Z_AXIS] += 30;
+		current_position[E_AXIS] += 30;
+		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 400 / 60, active_extruder); //fast sequence
+		st_synchronize();
+		current_position[E_AXIS] += 25;
+		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 100 / 60, active_extruder); //slow sequence
+		st_synchronize();
 
-if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
-	tone(BEEPER, 500);
-	delay_keep_alive(50);
-	noTone(BEEPER);
+		if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE)) tone(BEEPER, 500);
+		delay_keep_alive(50);
+		noTone(BEEPER);
 
-	if (!farm_mode && loading_flag) {
-		bool clean = lcd_show_fullscreen_message_yes_no_and_wait_P(_T(MSG_FILAMENT_CLEAN), false, true);
+		if (!farm_mode && loading_flag) {
+			bool clean = lcd_show_fullscreen_message_yes_no_and_wait_P(_T(MSG_FILAMENT_CLEAN), false, true);
 
-		while (!clean) {
-			lcd_update_enable(true);
-			lcd_update(2);
-			current_position[E_AXIS] += 25;
-			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 100 / 60, active_extruder); //slow sequence
-			st_synchronize();
-			clean = lcd_show_fullscreen_message_yes_no_and_wait_P(_T(MSG_FILAMENT_CLEAN), false, true);
+			while (!clean) {
+				lcd_update_enable(true);
+				lcd_update(2);
+				current_position[E_AXIS] += 25;
+				plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 100 / 60, active_extruder); //slow sequence
+				st_synchronize();
+				clean = lcd_show_fullscreen_message_yes_no_and_wait_P(_T(MSG_FILAMENT_CLEAN), false, true);
+
+			}
 
 		}
-
-	}
-	lcd_update_enable(true);
-	lcd_update(2);
-	lcd_setstatuspgm(_T(WELCOME_MSG));
-	disable_z();
-	loading_flag = false;
-	custom_message = false;
-	custom_message_type = 0;
-
-#ifdef FILAMENT_SENSOR
-	fsensor_oq_meassure_stop();
-
-	if (!fsensor_oq_result())
-	{
-		bool disable = lcd_show_fullscreen_message_yes_no_and_wait_P(_i("Fil. sensor response is poor, disable it?"), false, true);
 		lcd_update_enable(true);
 		lcd_update(2);
-		if (disable)
-			fsensor_disable();
-	}
+		lcd_setstatuspgm(_T(WELCOME_MSG));
+		disable_z();
+		loading_flag = false;
+		custom_message = false;
+		custom_message_type = 0;
+
+#ifdef FILAMENT_SENSOR
+		fsensor_oq_meassure_stop();
+
+		if (!fsensor_oq_result())
+		{
+			bool disable = lcd_show_fullscreen_message_yes_no_and_wait_P(_i("Fil. sensor response is poor, disable it?"), false, true);
+			lcd_update_enable(true);
+			lcd_update(2);
+			if (disable)
+				fsensor_disable();
+		}
 #endif //FILAMENT_SENSOR
-#endif //defined (SNMM) || defined (SNMM_V2)
+	}
 }
 /**
  * @brief Get serial number from 32U2 processor
@@ -4611,7 +4611,7 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 //		SERIAL_ECHOLNPGM("Go home finished");
 		//unretract (after PINDA preheat retraction)
 		if (degHotend(active_extruder) > EXTRUDE_MINTEMP && temp_cal_active == true && calibration_status_pinda() == true && target_temperature_bed >= 50) {
-			current_position[E_AXIS] += DEFAULT_RETRACTION;
+			current_position[E_AXIS] += default_retraction;
 			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 400, active_extruder);
 		}
 		KEEPALIVE_STATE(NOT_BUSY);
@@ -6460,11 +6460,8 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
           #endif
         }
 
-#ifdef SNMM_V2
-		if (code_seen("AUTO")) {
+		if (mmu_enabled && code_seen("AUTO"))
 			automatic = true;
-		}
-#endif //SNMM_V2
 
 		gcode_M600(automatic, x_position, y_position, z_shift, e_shift_init, e_shift_late);
 	
@@ -6768,32 +6765,24 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
     break;
 	case 701: //M701: load filament
 	{
-		#ifdef SNMM_V2
-		if (code_seen('E'))
-		{
+		if (mmu_enabled && code_seen('E'))
 			snmm_extruder = code_value();
-		}
-		#endif
-		
-
 		gcode_M701();
 	}
 	break;
 	case 702:
 	{
-#if defined (SNMM) || defined (SNMM_V2) 
-		if (code_seen('U')) {
-			extr_unload_used(); //unload all filaments which were used in current print
+		if (mmu_enabled)
+		{
+			if (code_seen('U'))
+				extr_unload_used(); //unload all filaments which were used in current print
+			else if (code_seen('C'))
+				extr_unload(); //unload just current filament 
+			else
+				extr_unload_all(); //unload all filaments
 		}
-		else if (code_seen('C')) {
-			extr_unload(); //unload just current filament 
-		}
-		else {
-			extr_unload_all(); //unload all filaments
-		}
-#else
-		unload_filament();
-#endif	
+		else
+			unload_filament();
 	}
 	break;
 
@@ -6829,7 +6818,8 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 		  }
 		  snmm_filaments_used |= (1 << tmp_extruder); //for stop print
 
-#if defined (SNMM_V2)
+if (mmu_enabled)
+{
 		  printf_P(PSTR("T code: %d \n"), tmp_extruder);
 		  fprintf_P(uart2io, PSTR("T%d\n"), tmp_extruder);
 
@@ -6837,17 +6827,17 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 
     	  snmm_extruder = tmp_extruder; //filament change is finished
 
-		  if (*(strchr_pointer + index) == '?') { // for single material usage with mmu
+		  if (*(strchr_pointer + index) == '?')// for single material usage with mmu
 			  mmu_load_to_nozzle();
+}
+else
+{
+#ifdef SNMM
 
-		  }
-#elif defined(SNMM)
-
-          
-    #ifdef LIN_ADVANCE
+	#ifdef LIN_ADVANCE
           if (snmm_extruder != tmp_extruder)
             clear_current_adv_vars(); //Check if the selected extruder is not the active one and reset LIN_ADVANCE variables if so.
-    #endif
+	#endif
           
 		  snmm_extruder = tmp_extruder;
 
@@ -6889,7 +6879,7 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 		  }
 		  delay(100);
 
-#else //SNMM and SNMM_V2 undefined:
+#else //SNMM
 		  if (tmp_extruder >= EXTRUDERS) {
 			  SERIAL_ECHO_START;
 			  SERIAL_ECHOPGM("T");
@@ -6934,7 +6924,8 @@ if((eSoundMode==e_SOUND_MODE_LOUD)||(eSoundMode==e_SOUND_MODE_ONCE))
 			  SERIAL_PROTOCOLLN((int)active_extruder);
 		  }
 
-#endif
+#endif //SNMM
+}
 	  }
   } // end if(code_seen('T')) (end of T codes)
 
@@ -7980,7 +7971,7 @@ void temp_compensation_start() {
 	custom_message_state = PINDA_HEAT_T + 1;
 	lcd_update(2);
 	if (degHotend(active_extruder) > EXTRUDE_MINTEMP) {
-		current_position[E_AXIS] -= DEFAULT_RETRACTION;
+		current_position[E_AXIS] -= default_retraction;
 	}
 	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 400, active_extruder);
 	
@@ -8119,7 +8110,7 @@ void long_pause() //long pause print
 	pause_lastpos[E_AXIS] = current_position[E_AXIS];
 
 	//retract
-	current_position[E_AXIS] -= DEFAULT_RETRACTION;
+	current_position[E_AXIS] -= default_retraction;
 	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 400, active_extruder);
 
 	//lift z
@@ -8218,7 +8209,7 @@ void uvlo_()
       current_position[X_AXIS], 
       current_position[Y_AXIS], 
       current_position[Z_AXIS], 
-      current_position[E_AXIS] - DEFAULT_RETRACTION,
+      current_position[E_AXIS] - default_retraction,
       95, active_extruder);
     
         st_synchronize();
@@ -8228,7 +8219,7 @@ void uvlo_()
       current_position[X_AXIS], 
       current_position[Y_AXIS], 
       current_position[Z_AXIS] + UVLO_Z_AXIS_SHIFT + float((1024 - z_microsteps + 7) >> 4) / axis_steps_per_unit[Z_AXIS], 
-      current_position[E_AXIS] - DEFAULT_RETRACTION,
+      current_position[E_AXIS] - default_retraction,
       40, active_extruder);
     
     st_synchronize();
@@ -8238,7 +8229,7 @@ void uvlo_()
                      current_position[X_AXIS],
                      current_position[Y_AXIS],
                      current_position[Z_AXIS] + UVLO_Z_AXIS_SHIFT + float((1024 - z_microsteps + 7) >> 4) / axis_steps_per_unit[Z_AXIS],
-                     current_position[E_AXIS] - DEFAULT_RETRACTION,
+                     current_position[E_AXIS] - default_retraction,
                      40, active_extruder);
     st_synchronize();
     disable_e0();
@@ -8432,7 +8423,7 @@ void recover_print(uint8_t automatic) {
     if(automatic == 0){ 
         enquecommand_P(PSTR("G1 E5 F120")); //Extrude some filament to stabilize pessure 
     } 
-	enquecommand_P(PSTR("G1 E"  STRINGIFY(-DEFAULT_RETRACTION)" F480"));
+	enquecommand_P(PSTR("G1 E"  STRINGIFY(-default_retraction)" F480"));
 
 	printf_P(_N("After waiting for temp:\nCurrent pos X_AXIS:%.3f\nCurrent pos Y_AXIS:%.3f\n"), current_position[X_AXIS], current_position[Y_AXIS]);
 
@@ -8570,7 +8561,7 @@ void restore_print_from_eeprom() {
 	strcpy_P(cmd, PSTR("G1 Z")); strcat(cmd, ftostr32(eeprom_read_float((float*)(EEPROM_UVLO_CURRENT_POSITION_Z))));
 	enquecommand(cmd);
   // Unretract.
-	enquecommand_P(PSTR("G1 E"  STRINGIFY(2*DEFAULT_RETRACTION)" F480"));
+	enquecommand_P(PSTR("G1 E"  STRINGIFY(2*default_retraction)" F480"));
   // Set the feedrate saved at the power panic.
 	sprintf_P(cmd, PSTR("G1 F%d"), feedrate_rec);
 	enquecommand(cmd);
@@ -8998,11 +8989,10 @@ void M600_check_state() {
 			switch(lcd_change_fil_state){
 				// Filament failed to load so load it again
 				case 2:
-					#ifdef SNMM_V2
-					mmu_M600_load_filament(false); //nonautomatic load; change to "wrong filament loaded" option?
-					#else
-					M600_load_filament_movements();
-					#endif
+					if (mmu_enabled)
+						mmu_M600_load_filament(false); //nonautomatic load; change to "wrong filament loaded" option?
+					else
+						M600_load_filament_movements();
 					break;
 
 				// Filament loaded properly but color is not clear
@@ -9103,63 +9093,61 @@ void M600_wait_for_user() {
 		WRITE(BEEPER, LOW);
 }
 
-void mmu_M600_load_filament(bool automatic) { 
+void mmu_M600_load_filament(bool automatic)
+{ 
 	//load filament for mmu v2
-#ifdef SNMM_V2
-		  bool response = false;
-		  bool yes = false;
-		  if (!automatic) {
-			  yes = lcd_show_fullscreen_message_yes_no_and_wait_P(_i("Do you want to switch extruder?"), false);
-			  if(yes) tmp_extruder = choose_extruder_menu();
-			  else tmp_extruder = snmm_extruder;
-
-		  }
-		  else {
-			  tmp_extruder = (tmp_extruder+1)%5;
-		  }
-		  lcd_update_enable(false);
-		  lcd_clear();
-		  lcd_set_cursor(0, 1); lcd_puts_P(_T(MSG_LOADING_FILAMENT));
-		  lcd_print(" ");
-		  lcd_print(tmp_extruder + 1);
-		  snmm_filaments_used |= (1 << tmp_extruder); //for stop print
-		  printf_P(PSTR("T code: %d \n"), tmp_extruder);
-		  fprintf_P(uart2io, PSTR("T%d\n"), tmp_extruder);
-
-		  manage_response();
-    	  snmm_extruder = tmp_extruder; //filament change is finished
-
-		  mmu_load_to_nozzle();
-#endif
+	bool response = false;
+	bool yes = false;
+	if (!automatic)
+	{
+		yes = lcd_show_fullscreen_message_yes_no_and_wait_P(_i("Do you want to switch extruder?"), false);
+		if (yes) tmp_extruder = choose_extruder_menu();
+		else tmp_extruder = snmm_extruder;
+	}
+	else
+	{
+		tmp_extruder = (tmp_extruder+1)%5;
+	}
+	lcd_update_enable(false);
+	lcd_clear();
+	lcd_set_cursor(0, 1); lcd_puts_P(_T(MSG_LOADING_FILAMENT));
+	lcd_print(" ");
+	lcd_print(tmp_extruder + 1);
+	snmm_filaments_used |= (1 << tmp_extruder); //for stop print
+	printf_P(PSTR("T code: %d \n"), tmp_extruder);
+	fprintf_P(uart2io, PSTR("T%d\n"), tmp_extruder);
+	manage_response();
+	snmm_extruder = tmp_extruder; //filament change is finished
+	mmu_load_to_nozzle();
 }
 
-void M600_load_filament_movements() {
+void M600_load_filament_movements()
+{
 #ifdef SNMM
-				 display_loading();
-				 do {
-					 current_position[E_AXIS] += 0.002;
-					 plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 500, active_extruder);
-					 delay_keep_alive(2);
-				 } while (!lcd_clicked());
-
-				 st_synchronize();
-				 current_position[E_AXIS] += bowden_length[snmm_extruder];
-				 plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 3000, active_extruder);
-				 current_position[E_AXIS] += FIL_LOAD_LENGTH - 60;
-				 plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 1400, active_extruder);
-				 current_position[E_AXIS] += 40;
-				 plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 400, active_extruder);
-				 current_position[E_AXIS] += 10;
-				 plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 50, active_extruder);
-
+	display_loading();
+	do
+	{
+		current_position[E_AXIS] += 0.002;
+		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 500, active_extruder);
+		delay_keep_alive(2);
+	}
+	while (!lcd_clicked());
+	st_synchronize();
+	current_position[E_AXIS] += bowden_length[snmm_extruder];
+	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 3000, active_extruder);
+	current_position[E_AXIS] += FIL_LOAD_LENGTH - 60;
+	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 1400, active_extruder);
+	current_position[E_AXIS] += 40;
+	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 400, active_extruder);
+	current_position[E_AXIS] += 10;
+	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 50, active_extruder);
 #else
-                     current_position[E_AXIS]+= FILAMENTCHANGE_FIRSTFEED ;
-                     plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], FILAMENTCHANGE_EFEED, active_extruder); 
+	current_position[E_AXIS]+= FILAMENTCHANGE_FIRSTFEED ;
+	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], FILAMENTCHANGE_EFEED, active_extruder); 
 #endif                
-                     current_position[E_AXIS]+= FILAMENTCHANGE_FINALFEED ;
-                     plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], FILAMENTCHANGE_EXFEED, active_extruder); 
-
-                     lcd_loading_filament();
+	current_position[E_AXIS]+= FILAMENTCHANGE_FINALFEED ;
+	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], FILAMENTCHANGE_EXFEED, active_extruder); 
+	lcd_loading_filament();
 }
 
 void M600_load_filament() {
diff --git a/Firmware/lcd.cpp b/Firmware/lcd.cpp
index 806ef246..fa6556de 100644
--- a/Firmware/lcd.cpp
+++ b/Firmware/lcd.cpp
@@ -910,7 +910,7 @@ const uint8_t lcd_chardata_folder[8] PROGMEM = {
 	B00000,
 	B00000}; //thanks joris
 
-const uint8_t lcd_chardata_feedrate[8] PROGMEM = {
+/*const uint8_t lcd_chardata_feedrate[8] PROGMEM = {
 	B11100,
 	B10000,
 	B11000,
@@ -918,7 +918,7 @@ const uint8_t lcd_chardata_feedrate[8] PROGMEM = {
 	B00101,
 	B00110,
 	B00101,
-	B00000}; //thanks Sonny Mounicou
+	B00000};*/ //thanks Sonny Mounicou
 
 /*const uint8_t lcd_chardata_feedrate[8] PROGMEM = {
 	B11100,
@@ -940,7 +940,7 @@ const uint8_t lcd_chardata_feedrate[8] PROGMEM = {
 	B01100,
 	B10011};*/
 
-/*const uint8_t lcd_chardata_feedrate[8] PROGMEM = {
+const uint8_t lcd_chardata_feedrate[8] PROGMEM = {
 	B00000,
 	B00100,
 	B10010,
@@ -948,7 +948,7 @@ const uint8_t lcd_chardata_feedrate[8] PROGMEM = {
 	B10010,
 	B00100,
 	B00000,
-	B00000};*/
+	B00000};
 
 const uint8_t lcd_chardata_clock[8] PROGMEM = {
 	B00000,
diff --git a/Firmware/mmu.cpp b/Firmware/mmu.cpp
new file mode 100644
index 00000000..2206e3dc
--- /dev/null
+++ b/Firmware/mmu.cpp
@@ -0,0 +1,423 @@
+//mmu.cpp
+
+#include "mmu.h"
+#include "planner.h"
+#include "language.h"
+#include "lcd.h"
+#include "uart2.h"
+#include "temperature.h"
+#include "Configuration_prusa.h"
+
+
+extern const char* lcd_display_message_fullscreen_P(const char *msg);
+extern void lcd_return_to_status();
+
+#ifdef SNMM_V2
+bool mmu_enabled = true;
+#else //SNMM_V2
+bool mmu_enabled = false;
+#endif //SNMM_V2
+
+uint8_t snmm_extruder = 0;
+
+void extr_mov(float shift, float feed_rate)
+{ //move extruder no matter what the current heater temperature is
+	set_extrude_min_temp(.0);
+	current_position[E_AXIS] += shift;
+	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], feed_rate, active_extruder);
+	set_extrude_min_temp(EXTRUDE_MINTEMP);
+}
+
+
+void change_extr(int extr) { //switches multiplexer for extruders
+#ifdef SNMM
+	st_synchronize();
+	delay(100);
+
+	disable_e0();
+	disable_e1();
+	disable_e2();
+
+	snmm_extruder = extr;
+
+	pinMode(E_MUX0_PIN, OUTPUT);
+	pinMode(E_MUX1_PIN, OUTPUT);
+
+	switch (extr) {
+	case 1:
+		WRITE(E_MUX0_PIN, HIGH);
+		WRITE(E_MUX1_PIN, LOW);
+		
+		break;
+	case 2:
+		WRITE(E_MUX0_PIN, LOW);
+		WRITE(E_MUX1_PIN, HIGH);
+		
+		break;
+	case 3:
+		WRITE(E_MUX0_PIN, HIGH);
+		WRITE(E_MUX1_PIN, HIGH);
+		
+		break;
+	default:
+		WRITE(E_MUX0_PIN, LOW);
+		WRITE(E_MUX1_PIN, LOW);
+		
+		break;
+	}
+	delay(100);
+#endif
+}
+
+int get_ext_nr()
+{ //reads multiplexer input pins and return current extruder number (counted from 0)
+#ifndef SNMM
+	return(snmm_extruder); //update needed
+#else 
+	return(2 * READ(E_MUX1_PIN) + READ(E_MUX0_PIN));
+#endif
+}
+
+
+void display_loading()
+{
+	switch (snmm_extruder) 
+	{
+	case 1: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T1)); break;
+	case 2: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T2)); break;
+	case 3: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T3)); break;
+	default: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T0)); break;
+	}
+}
+
+void extr_adj(int extruder) //loading filament for SNMM
+{
+#ifndef SNMM
+    printf_P(PSTR("L%d \n"),extruder);
+    fprintf_P(uart2io, PSTR("L%d\n"), extruder);
+	
+	//show which filament is currently loaded
+	
+	lcd_update_enable(false);
+	lcd_clear();
+	lcd_set_cursor(0, 1); lcd_puts_P(_T(MSG_LOADING_FILAMENT));
+	//if(strlen(_T(MSG_LOADING_FILAMENT))>18) lcd.setCursor(0, 1);
+	//else lcd.print(" ");
+	lcd_print(" ");
+	lcd_print(snmm_extruder + 1);
+
+	// get response
+	manage_response();
+
+	lcd_update_enable(true);
+	
+	
+	//lcd_return_to_status();
+#else
+
+	bool correct;
+	max_feedrate[E_AXIS] =80;
+	//max_feedrate[E_AXIS] = 50;
+	START:
+	lcd_clear();
+	lcd_set_cursor(0, 0); 
+	switch (extruder) {
+	case 1: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T1)); break;
+	case 2: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T2)); break;
+	case 3: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T3)); break;
+	default: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T0)); break;   
+	}
+	KEEPALIVE_STATE(PAUSED_FOR_USER);
+	do{
+		extr_mov(0.001,1000);
+		delay_keep_alive(2);
+	} while (!lcd_clicked());
+	//delay_keep_alive(500);
+	KEEPALIVE_STATE(IN_HANDLER);
+	st_synchronize();
+	//correct = lcd_show_fullscreen_message_yes_no_and_wait_P(MSG_FIL_LOADED_CHECK, false);
+	//if (!correct) goto	START;
+	//extr_mov(BOWDEN_LENGTH/2.f, 500); //dividing by 2 is there because of max. extrusion length limitation (x_max + y_max)
+	//extr_mov(BOWDEN_LENGTH/2.f, 500);
+	extr_mov(bowden_length[extruder], 500);
+	lcd_clear();
+	lcd_set_cursor(0, 0); lcd_puts_P(_T(MSG_LOADING_FILAMENT));
+	if(strlen(_T(MSG_LOADING_FILAMENT))>18) lcd_set_cursor(0, 1);
+	else lcd_print(" ");
+	lcd_print(snmm_extruder + 1);
+	lcd_set_cursor(0, 2); lcd_puts_P(_T(MSG_PLEASE_WAIT));
+	st_synchronize();
+	max_feedrate[E_AXIS] = 50;
+	lcd_update_enable(true);
+	lcd_return_to_status();
+	lcdDrawUpdate = 2;
+#endif
+}
+
+
+void extr_unload()
+{ //unload just current filament for multimaterial printers
+#ifdef SNMM
+	float tmp_motor[3] = DEFAULT_PWM_MOTOR_CURRENT;
+	float tmp_motor_loud[3] = DEFAULT_PWM_MOTOR_CURRENT_LOUD;
+	uint8_t SilentMode = eeprom_read_byte((uint8_t*)EEPROM_SILENT);
+#endif
+
+	if (degHotend0() > EXTRUDE_MINTEMP)
+	{
+#ifndef SNMM
+		st_synchronize();
+		
+		//show which filament is currently unloaded
+		lcd_update_enable(false);
+		lcd_clear();
+		lcd_set_cursor(0, 1); lcd_puts_P(_T(MSG_UNLOADING_FILAMENT));
+		lcd_print(" ");
+		lcd_print(snmm_extruder + 1);
+
+		current_position[E_AXIS] -= 80;
+		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 2500 / 60, active_extruder);
+		st_synchronize();
+		printf_P(PSTR("U0\n"));
+		fprintf_P(uart2io, PSTR("U0\n"));
+
+		// get response
+		manage_response();
+
+		lcd_update_enable(true);
+#else //SNMM
+
+		lcd_clear();
+		lcd_display_message_fullscreen_P(PSTR(""));
+		max_feedrate[E_AXIS] = 50;
+		lcd_set_cursor(0, 0); lcd_puts_P(_T(MSG_UNLOADING_FILAMENT));
+		lcd_print(" ");
+		lcd_print(snmm_extruder + 1);
+		lcd_set_cursor(0, 2); lcd_puts_P(_T(MSG_PLEASE_WAIT));
+		if (current_position[Z_AXIS] < 15) {
+			current_position[Z_AXIS] += 15; //lifting in Z direction to make space for extrusion
+			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 25, active_extruder);
+		}
+		
+		current_position[E_AXIS] += 10; //extrusion
+		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 10, active_extruder);
+		st_current_set(2, E_MOTOR_HIGH_CURRENT);
+		if (current_temperature[0] < 230) { //PLA & all other filaments
+			current_position[E_AXIS] += 5.4;
+			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 2800 / 60, active_extruder);
+			current_position[E_AXIS] += 3.2;
+			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 3000 / 60, active_extruder);
+			current_position[E_AXIS] += 3;
+			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 3400 / 60, active_extruder);
+		}
+		else { //ABS
+			current_position[E_AXIS] += 3.1;
+			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 2000 / 60, active_extruder);
+			current_position[E_AXIS] += 3.1;
+			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 2500 / 60, active_extruder);
+			current_position[E_AXIS] += 4;
+			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 3000 / 60, active_extruder);
+			/*current_position[X_AXIS] += 23; //delay
+			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 600 / 60, active_extruder); //delay
+			current_position[X_AXIS] -= 23; //delay
+			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 600 / 60, active_extruder); //delay*/
+			delay_keep_alive(4700);
+		}
+	
+		max_feedrate[E_AXIS] = 80;
+		current_position[E_AXIS] -= (bowden_length[snmm_extruder] + 60 + FIL_LOAD_LENGTH) / 2;
+		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 500, active_extruder);
+		current_position[E_AXIS] -= (bowden_length[snmm_extruder] + 60 + FIL_LOAD_LENGTH) / 2;
+		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 500, active_extruder);
+		st_synchronize();
+		//st_current_init();
+		if (SilentMode != SILENT_MODE_OFF) st_current_set(2, tmp_motor[2]); //set back to normal operation currents
+		else st_current_set(2, tmp_motor_loud[2]);
+		lcd_update_enable(true);
+		lcd_return_to_status();
+		max_feedrate[E_AXIS] = 50;
+#endif //SNMM
+	}
+	else
+	{
+		lcd_clear();
+		lcd_set_cursor(0, 0);
+		lcd_puts_P(_T(MSG_ERROR));
+		lcd_set_cursor(0, 2);
+		lcd_puts_P(_T(MSG_PREHEAT_NOZZLE));
+		delay(2000);
+		lcd_clear();
+	}
+	//lcd_return_to_status();
+}
+
+//wrapper functions for loading filament
+void extr_adj_0()
+{
+#ifndef SNMM
+	enquecommand_P(PSTR("M701 E0"));
+#else
+	change_extr(0);
+	extr_adj(0);
+#endif
+}
+
+void extr_adj_1()
+{
+#ifndef SNMM
+	enquecommand_P(PSTR("M701 E1"));
+#else
+	change_extr(1);
+	extr_adj(1);
+#endif
+}
+
+void extr_adj_2()
+{
+#ifndef SNMM
+	enquecommand_P(PSTR("M701 E2"));
+#else
+	change_extr(2);
+	extr_adj(2);
+#endif
+}
+
+void extr_adj_3()
+{
+#ifndef SNMM
+	enquecommand_P(PSTR("M701 E3"));
+#else
+	change_extr(3);
+	extr_adj(3);
+#endif
+}
+
+void extr_adj_4()
+{
+#ifndef SNMM
+	enquecommand_P(PSTR("M701 E4"));
+#else
+	change_extr(4);
+	extr_adj(4);
+#endif
+}
+
+void load_all()
+{
+#ifndef SNMM
+	enquecommand_P(PSTR("M701 E0"));
+	enquecommand_P(PSTR("M701 E1"));
+	enquecommand_P(PSTR("M701 E2"));
+	enquecommand_P(PSTR("M701 E3"));
+	enquecommand_P(PSTR("M701 E4"));
+#else
+	for (int i = 0; i < 4; i++)
+	{
+		change_extr(i);
+		extr_adj(i);
+	}
+#endif
+}
+
+//wrapper functions for changing extruders
+void extr_change_0()
+{
+	change_extr(0);
+	lcd_return_to_status();
+}
+
+void extr_change_1()
+{
+	change_extr(1);
+	lcd_return_to_status();
+}
+
+void extr_change_2()
+{
+	change_extr(2);
+	lcd_return_to_status();
+}
+
+void extr_change_3()
+{
+	change_extr(3);
+	lcd_return_to_status();
+}
+
+//wrapper functions for unloading filament
+void extr_unload_all()
+{
+	if (degHotend0() > EXTRUDE_MINTEMP)
+	{
+		for (int i = 0; i < 4; i++)
+		{
+			change_extr(i);
+			extr_unload();
+		}
+	}
+	else
+	{
+		lcd_clear();
+		lcd_set_cursor(0, 0);
+		lcd_puts_P(_T(MSG_ERROR));
+		lcd_set_cursor(0, 2);
+		lcd_puts_P(_T(MSG_PREHEAT_NOZZLE));
+		delay(2000);
+		lcd_clear();
+		lcd_return_to_status();
+	}
+}
+
+//unloading just used filament (for snmm)
+void extr_unload_used()
+{
+	if (degHotend0() > EXTRUDE_MINTEMP) {
+		for (int i = 0; i < 4; i++) {
+			if (snmm_filaments_used & (1 << i)) {
+				change_extr(i);
+				extr_unload();
+			}
+		}
+		snmm_filaments_used = 0;
+	}
+	else {
+		lcd_clear();
+		lcd_set_cursor(0, 0);
+		lcd_puts_P(_T(MSG_ERROR));
+		lcd_set_cursor(0, 2);
+		lcd_puts_P(_T(MSG_PREHEAT_NOZZLE));
+		delay(2000);
+		lcd_clear();
+		lcd_return_to_status();
+	}
+}
+
+void extr_unload_0()
+{
+	change_extr(0);
+	extr_unload();
+}
+
+void extr_unload_1()
+{
+	change_extr(1);
+	extr_unload();
+}
+
+void extr_unload_2()
+{
+	change_extr(2);
+	extr_unload();
+}
+
+void extr_unload_3()
+{
+	change_extr(3);
+	extr_unload();
+}
+
+void extr_unload_4()
+{
+	change_extr(4);
+	extr_unload();
+}
diff --git a/Firmware/mmu.h b/Firmware/mmu.h
new file mode 100644
index 00000000..b8a0a1c9
--- /dev/null
+++ b/Firmware/mmu.h
@@ -0,0 +1,30 @@
+//mmu.h
+
+#include <inttypes.h>
+
+extern bool mmu_enabled;
+extern uint8_t snmm_extruder;
+
+extern void extr_mov(float shift, float feed_rate);
+extern void change_extr(int extr);
+extern int get_ext_nr();
+extern void display_loading();
+extern void extr_adj(int extruder);
+extern void extr_unload();
+extern void extr_adj_0();
+extern void extr_adj_1();
+extern void extr_adj_2();
+extern void extr_adj_3();
+extern void extr_adj_4();
+extern void load_all();
+extern void extr_change_0();
+extern void extr_change_1();
+extern void extr_change_2();
+extern void extr_change_3();
+extern void extr_unload_all();
+extern void extr_unload_used();
+extern void extr_unload_0();
+extern void extr_unload_1();
+extern void extr_unload_2();
+extern void extr_unload_3();
+extern void extr_unload_4();
diff --git a/Firmware/ultralcd.cpp b/Firmware/ultralcd.cpp
index b9afa034..dd1e912d 100644
--- a/Firmware/ultralcd.cpp
+++ b/Firmware/ultralcd.cpp
@@ -33,10 +33,9 @@
 
 #include "sound.h"
 
-#ifdef SNMM_V2
 #include "uart2.h"
-#endif //SNMM_V2
 
+#include "mmu.h"
 
 extern int lcd_change_fil_state;
 extern bool fans_check_enabled;
@@ -73,9 +72,6 @@ extern void crashdet_disable();
 #endif //TMC2130
 
 
-#if defined (SNMM) || defined (SNMM_V2)
-uint8_t snmm_extruder = 0;
-#endif
 
 #ifdef SDCARD_SORT_ALPHA
  bool presort_flag = false;
@@ -165,16 +161,8 @@ static void lcd_colorprint_change();
 static int get_ext_nr();
 #endif //SNMM
 #if defined (SNMM) || defined(SNMM_V2)
-static void extr_adj_0();
-static void extr_adj_1();
-static void extr_adj_2();
-static void extr_adj_3();
 static void fil_load_menu();
 static void fil_unload_menu();
-static void extr_unload_0();
-static void extr_unload_1();
-static void extr_unload_2();
-static void extr_unload_3();
 #endif // SNMM || SNMM_V2
 static void lcd_disable_farm_mode();
 static void lcd_set_fan_check();
@@ -1112,11 +1100,11 @@ void lcd_commands()
 			
 			if (axis_relative_modes[3] == false) {
 				enquecommand_P(PSTR("M83")); // set extruder to relative mode
-			enquecommand_P(PSTR("G1 E"  STRINGIFY(DEFAULT_RETRACTION))); //unretract
+			enquecommand_P(PSTR("G1 E"  STRINGIFY(default_retraction))); //unretract
 				enquecommand_P(PSTR("M82")); // set extruder to absolute mode
 			}
 			else {
-				enquecommand_P(PSTR("G1 E"  STRINGIFY(DEFAULT_RETRACTION))); //unretract
+				enquecommand_P(PSTR("G1 E"  STRINGIFY(default_retraction))); //unretract
 			}
 			
 			lcd_commands_step = 1;
@@ -1431,9 +1419,8 @@ void lcd_commands()
 			enquecommand_P(PSTR("M190 S" STRINGIFY(PLA_PREHEAT_HPB_TEMP)));
 			enquecommand_P(PSTR("M109 S" STRINGIFY(PLA_PREHEAT_HOTEND_TEMP)));
 			enquecommand_P(_T(MSG_M117_V2_CALIBRATION));
-#ifdef SNMM_V2
-			enquecommand_P(PSTR("T?"));
-#endif //SNMM_V2
+			if (mmu_enabled)
+				enquecommand_P(PSTR("T?"));
 			enquecommand_P(PSTR("G28"));
 			enquecommand_P(PSTR("G92 E0.0"));
 			lcd_commands_step = 8;
@@ -1625,11 +1612,10 @@ void lcd_commands()
 		{
 			lcd_timeoutToStatus.start();
 			enquecommand_P(PSTR("M107")); //turn off printer fan			
-			#ifdef SNMM_V2
-			enquecommand_P(PSTR("M702 C"));
-			#else //SNMM_V2
-			enquecommand_P(PSTR("G1 E-0.07500 F2100.00000"));
-			#endif //SNMM_V2
+			if (mmu_enabled)
+				enquecommand_P(PSTR("M702 C"));
+			else
+				enquecommand_P(PSTR("G1 E-0.07500 F2100.00000"));
 			enquecommand_P(PSTR("M104 S0")); // turn off temperature
 			enquecommand_P(PSTR("M140 S0")); // turn off heatbed
 			enquecommand_P(PSTR("G1 Z10 F1300.000"));
@@ -1701,11 +1687,10 @@ void lcd_commands()
 			enquecommand_P(PSTR("G1 X50 Y" STRINGIFY(Y_MAX_POS) " E0 F7000"));
 			#endif
 			lcd_ignore_click(false);
-			#if defined (SNMM) || defined (SNMM_V2)
-			lcd_commands_step = 8;
-			#else
-			lcd_commands_step = 3;
-			#endif
+			if (mmu_enabled)
+				lcd_commands_step = 8;
+			else
+				lcd_commands_step = 3;
 		}
 		if (lcd_commands_step == 5 && !blocks_queued())
 		{
@@ -1722,25 +1707,25 @@ void lcd_commands()
 			lcd_setstatuspgm(_T(MSG_PRINT_ABORTED));
 			cancel_heatup = true;
 			setTargetBed(0);
-			#if !(defined (SNMM) || defined (SNMM_V2))
-			setAllTargetHotends(0);
-			#endif
+			if (mmu_enabled)
+				setAllTargetHotends(0);
 			manage_heater();
 			custom_message = true;
 			custom_message_type = 2;
 			lcd_commands_step = 5;
 		}
-		if (lcd_commands_step == 7 && !blocks_queued()) {
-			#ifdef SNMM_V2
-			enquecommand_P(PSTR("M702 C")); //current
-			#else //SNMM_V2
-			switch(snmm_stop_print_menu()) {
+		if (lcd_commands_step == 7 && !blocks_queued())
+		{
+			if (mmu_enabled)
+				enquecommand_P(PSTR("M702 C")); //current
+			else
+				switch(snmm_stop_print_menu())
+				{
 				case 0: enquecommand_P(PSTR("M702")); break;//all 
 				case 1: enquecommand_P(PSTR("M702 U")); break; //used
 				case 2: enquecommand_P(PSTR("M702 C")); break; //current
 				default: enquecommand_P(PSTR("M702")); break;
-			}
-			#endif //SNMM_V2
+				}
 			lcd_commands_step = 3;
 		}
 		if (lcd_commands_step == 8 && !blocks_queued()) { //step 8 is here for delay (going to next step after execution of all gcodes from step 4)
@@ -1851,7 +1836,7 @@ static float count_e(float layer_heigth, float extrusion_width, float extrusion_
 	return extr;
 }
 
-static void lcd_return_to_status()
+void lcd_return_to_status()
 {
 	lcd_refresh(); // to maybe revive the LCD if static electricity killed it.
 	menu_goto(lcd_status_screen, 0, false, true);
@@ -3277,8 +3262,14 @@ const char* lcd_display_message_fullscreen_P(const char *msg, uint8_t &nlines)
     // Disable update of the screen by the usual lcd_update(0) routine.
     lcd_update_enable(false);
     lcd_clear();
+//	uint8_t nlines;
     return lcd_display_message_fullscreen_nonBlocking_P(msg, nlines);
 }
+const char* lcd_display_message_fullscreen_P(const char *msg) 
+{
+  uint8_t nlines;
+  return lcd_display_message_fullscreen_P(msg, nlines);
+}
 
 
 /**
@@ -4307,27 +4298,29 @@ void lcd_toshiba_flash_air_compatibility_toggle()
    eeprom_update_byte((uint8_t*)EEPROM_TOSHIBA_FLASH_AIR_COMPATIBLITY, card.ToshibaFlashAir_isEnabled());
 }
 
-void lcd_v2_calibration() {
-#ifdef SNMM_V2
-	lcd_commands_type = LCD_COMMAND_V2_CAL;
-#else //SNMM_V2
-	bool loaded = lcd_show_fullscreen_message_yes_no_and_wait_P(_i("Is PLA filament loaded?"), false, true);////MSG_PLA_FILAMENT_LOADED c=20 r=2
-	if (loaded) {
+void lcd_v2_calibration()
+{
+	if (mmu_enabled)
 		lcd_commands_type = LCD_COMMAND_V2_CAL;
-	}
-	else {
-		lcd_display_message_fullscreen_P(_i("Please load PLA filament first."));////MSG_PLEASE_LOAD_PLA c=20 r=4
-		for (int i = 0; i < 20; i++) { //wait max. 2s
-			delay_keep_alive(100);
-			if (lcd_clicked()) {
-				while (lcd_clicked());
-				delay(10);
-				while (lcd_clicked());
-				break;
+	else
+	{
+		bool loaded = lcd_show_fullscreen_message_yes_no_and_wait_P(_i("Is PLA filament loaded?"), false, true);////MSG_PLA_FILAMENT_LOADED c=20 r=2
+		if (loaded) {
+			lcd_commands_type = LCD_COMMAND_V2_CAL;
+		}
+		else {
+			lcd_display_message_fullscreen_P(_i("Please load PLA filament first."));////MSG_PLEASE_LOAD_PLA c=20 r=4
+			for (int i = 0; i < 20; i++) { //wait max. 2s
+				delay_keep_alive(100);
+				if (lcd_clicked()) {
+					while (lcd_clicked());
+					delay(10);
+					while (lcd_clicked());
+					break;
+				}
 			}
 		}
 	}
-#endif //SNMM_V2
 	lcd_return_to_status();
 	lcd_update_enable(true);
 }
@@ -4933,13 +4926,9 @@ static char snmm_stop_print_menu() { //menu for choosing which filaments will be
 	
 }
 
-char choose_extruder_menu() {
-
-#ifdef SNMM_V2
-	int items_no = 5;
-#else
-	int items_no = 4;
-#endif
+char choose_extruder_menu()
+{
+	int items_no = mmu_enabled?5:4;
 	int first = 0;
 	int enc_dif = 0;
 	char cursor_pos = 1;
@@ -5128,387 +5117,6 @@ static void lcd_disable_farm_mode()
 	
 }
 
-
-#if defined (SNMM) || defined(SNMM_V2) 
-
-static void extr_mov(float shift, float feed_rate) { //move extruder no matter what the current heater temperature is
-	set_extrude_min_temp(.0);
-	current_position[E_AXIS] += shift;
-	plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], feed_rate, active_extruder);
-	set_extrude_min_temp(EXTRUDE_MINTEMP);
-}
-
-
-void change_extr(int extr) { //switches multiplexer for extruders
-#ifndef SNMM_V2
-	st_synchronize();
-	delay(100);
-
-	disable_e0();
-	disable_e1();
-	disable_e2();
-
-	snmm_extruder = extr;
-
-	pinMode(E_MUX0_PIN, OUTPUT);
-	pinMode(E_MUX1_PIN, OUTPUT);
-
-	switch (extr) {
-	case 1:
-		WRITE(E_MUX0_PIN, HIGH);
-		WRITE(E_MUX1_PIN, LOW);
-		
-		break;
-	case 2:
-		WRITE(E_MUX0_PIN, LOW);
-		WRITE(E_MUX1_PIN, HIGH);
-		
-		break;
-	case 3:
-		WRITE(E_MUX0_PIN, HIGH);
-		WRITE(E_MUX1_PIN, HIGH);
-		
-		break;
-	default:
-		WRITE(E_MUX0_PIN, LOW);
-		WRITE(E_MUX1_PIN, LOW);
-		
-		break;
-	}
-	delay(100);
-#endif
-}
-
-#ifdef SNMM
-static int get_ext_nr() { //reads multiplexer input pins and return current extruder number (counted from 0)
-#ifdef SNMM_V2
-	return(snmm_extruder); //update needed
-#else 
-	return(2 * READ(E_MUX1_PIN) + READ(E_MUX0_PIN));
-#endif
-}
-#endif //SNMM
-
-
-void display_loading() {
-	switch (snmm_extruder) {
-	case 1: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T1)); break;
-	case 2: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T2)); break;
-	case 3: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T3)); break;
-	default: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T0)); break;
-	}
-}
-
-void extr_adj(int extruder) //loading filament for SNMM
-{
-
-#ifdef SNMM_V2
-    printf_P(PSTR("L%d \n"),extruder);
-    fprintf_P(uart2io, PSTR("L%d\n"), extruder);
-	
-	//show which filament is currently loaded
-	
-
-
-
-
-	lcd_update_enable(false);
-	lcd_clear();
-	lcd_set_cursor(0, 1); lcd_puts_P(_T(MSG_LOADING_FILAMENT));
-	//if(strlen(_T(MSG_LOADING_FILAMENT))>18) lcd.setCursor(0, 1);
-	//else lcd.print(" ");
-	lcd_print(" ");
-	lcd_print(snmm_extruder + 1);
-
-	// get response
-	manage_response();
-
-	lcd_update_enable(true);
-	
-	
-	//lcd_return_to_status();
-#else
-
-	bool correct;
-	max_feedrate[E_AXIS] =80;
-	//max_feedrate[E_AXIS] = 50;
-	START:
-	lcd_clear();
-	lcd_set_cursor(0, 0); 
-	switch (extruder) {
-	case 1: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T1)); break;
-	case 2: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T2)); break;
-	case 3: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T3)); break;
-	default: lcd_display_message_fullscreen_P(_T(MSG_FILAMENT_LOADING_T0)); break;   
-	}
-	KEEPALIVE_STATE(PAUSED_FOR_USER);
-	do{
-		extr_mov(0.001,1000);
-		delay_keep_alive(2);
-	} while (!lcd_clicked());
-	//delay_keep_alive(500);
-	KEEPALIVE_STATE(IN_HANDLER);
-	st_synchronize();
-	//correct = lcd_show_fullscreen_message_yes_no_and_wait_P(MSG_FIL_LOADED_CHECK, false);
-	//if (!correct) goto	START;
-	//extr_mov(BOWDEN_LENGTH/2.f, 500); //dividing by 2 is there because of max. extrusion length limitation (x_max + y_max)
-	//extr_mov(BOWDEN_LENGTH/2.f, 500);
-	extr_mov(bowden_length[extruder], 500);
-	lcd_clear();
-	lcd_set_cursor(0, 0); lcd_puts_P(_T(MSG_LOADING_FILAMENT));
-	if(strlen(_T(MSG_LOADING_FILAMENT))>18) lcd_set_cursor(0, 1);
-	else lcd_print(" ");
-	lcd_print(snmm_extruder + 1);
-	lcd_set_cursor(0, 2); lcd_puts_P(_T(MSG_PLEASE_WAIT));
-	st_synchronize();
-	max_feedrate[E_AXIS] = 50;
-	lcd_update_enable(true);
-	lcd_return_to_status();
-	lcdDrawUpdate = 2;
-#endif
-}
-
-
-void extr_unload() { //unload just current filament for multimaterial printers
-	#ifndef SNMM_V2
-	float tmp_motor[3] = DEFAULT_PWM_MOTOR_CURRENT;
-	float tmp_motor_loud[3] = DEFAULT_PWM_MOTOR_CURRENT_LOUD;
-	uint8_t SilentMode = eeprom_read_byte((uint8_t*)EEPROM_SILENT);
-	#endif
-
-	if (degHotend0() > EXTRUDE_MINTEMP) {
-		#ifdef SNMM_V2
-		st_synchronize();
-		
-		//show which filament is currently unloaded
-		lcd_update_enable(false);
-		lcd_clear();
-		lcd_set_cursor(0, 1); lcd_puts_P(_T(MSG_UNLOADING_FILAMENT));
-		lcd_print(" ");
-		lcd_print(snmm_extruder + 1);
-
-		current_position[E_AXIS] -= 80;
-		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 2500 / 60, active_extruder);
-		st_synchronize();
-		printf_P(PSTR("U0\n"));
-		fprintf_P(uart2io, PSTR("U0\n"));
-
-		// get response
-		manage_response();
-
-		lcd_update_enable(true);
-		#else //SNMM_V2
-
-		lcd_clear();
-		lcd_display_message_fullscreen_P(PSTR(""));
-		max_feedrate[E_AXIS] = 50;
-		lcd_set_cursor(0, 0); lcd_puts_P(_T(MSG_UNLOADING_FILAMENT));
-		lcd_print(" ");
-		lcd_print(snmm_extruder + 1);
-		lcd_set_cursor(0, 2); lcd_puts_P(_T(MSG_PLEASE_WAIT));
-		if (current_position[Z_AXIS] < 15) {
-			current_position[Z_AXIS] += 15; //lifting in Z direction to make space for extrusion
-			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 25, active_extruder);
-		}
-		
-		current_position[E_AXIS] += 10; //extrusion
-		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 10, active_extruder);
-		st_current_set(2, E_MOTOR_HIGH_CURRENT);
-		if (current_temperature[0] < 230) { //PLA & all other filaments
-			current_position[E_AXIS] += 5.4;
-			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 2800 / 60, active_extruder);
-			current_position[E_AXIS] += 3.2;
-			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 3000 / 60, active_extruder);
-			current_position[E_AXIS] += 3;
-			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 3400 / 60, active_extruder);
-		}
-		else { //ABS
-			current_position[E_AXIS] += 3.1;
-			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 2000 / 60, active_extruder);
-			current_position[E_AXIS] += 3.1;
-			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 2500 / 60, active_extruder);
-			current_position[E_AXIS] += 4;
-			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 3000 / 60, active_extruder);
-			/*current_position[X_AXIS] += 23; //delay
-			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 600 / 60, active_extruder); //delay
-			current_position[X_AXIS] -= 23; //delay
-			plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 600 / 60, active_extruder); //delay*/
-			delay_keep_alive(4700);
-		}
-	
-		max_feedrate[E_AXIS] = 80;
-		current_position[E_AXIS] -= (bowden_length[snmm_extruder] + 60 + FIL_LOAD_LENGTH) / 2;
-		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 500, active_extruder);
-		current_position[E_AXIS] -= (bowden_length[snmm_extruder] + 60 + FIL_LOAD_LENGTH) / 2;
-		plan_buffer_line(current_position[X_AXIS], current_position[Y_AXIS], current_position[Z_AXIS], current_position[E_AXIS], 500, active_extruder);
-		st_synchronize();
-		//st_current_init();
-		if (SilentMode != SILENT_MODE_OFF) st_current_set(2, tmp_motor[2]); //set back to normal operation currents
-		else st_current_set(2, tmp_motor_loud[2]);
-		lcd_update_enable(true);
-		lcd_return_to_status();
-		max_feedrate[E_AXIS] = 50;
-		#endif //SNMM_V2
-	}
-	else {
-
-		lcd_clear();
-		lcd_set_cursor(0, 0);
-		lcd_puts_P(_T(MSG_ERROR));
-		lcd_set_cursor(0, 2);
-		lcd_puts_P(_T(MSG_PREHEAT_NOZZLE));
-
-		delay(2000);
-		lcd_clear();
-	}
-	//lcd_return_to_status();
-}
-
-//wrapper functions for loading filament
-static void extr_adj_0(){
-	#ifdef SNMM_V2
-	enquecommand_P(PSTR("M701 E0"));
-	#else
-	change_extr(0);
-	extr_adj(0);
-	#endif
-}
-static void extr_adj_1() {
-	#ifdef SNMM_V2
-	enquecommand_P(PSTR("M701 E1"));
-	#else
-	change_extr(1);
-	extr_adj(1);
-	#endif
-}
-static void extr_adj_2() {
-	#ifdef SNMM_V2
-	enquecommand_P(PSTR("M701 E2"));
-	#else
-	change_extr(2);
-	extr_adj(2);
-	#endif
-}
-static void extr_adj_3() {
-	#ifdef SNMM_V2
-	enquecommand_P(PSTR("M701 E3"));
-	#else
-	change_extr(3);
-	extr_adj(3);
-	#endif
-}
-static void extr_adj_4() {
-	#ifdef SNMM_V2
-	enquecommand_P(PSTR("M701 E4"));
-	#else
-	change_extr(4);
-	extr_adj(4);
-	#endif
-}
-
-static void load_all() {
-	#ifdef SNMM_V2
-	enquecommand_P(PSTR("M701 E0"));
-	enquecommand_P(PSTR("M701 E1"));
-	enquecommand_P(PSTR("M701 E2"));
-	enquecommand_P(PSTR("M701 E3"));
-	enquecommand_P(PSTR("M701 E4"));
-	#else
-	for (int i = 0; i < 4; i++) {
-
-		
-
-		change_extr(i);
-		extr_adj(i);
-
-	}
-	#endif
-}
-
-//wrapper functions for changing extruders
-static void extr_change_0() {
-	change_extr(0);
-	lcd_return_to_status();
-}
-static void extr_change_1() {
-	change_extr(1);
-	lcd_return_to_status();
-}
-static void extr_change_2() {
-	change_extr(2);
-	lcd_return_to_status();
-}
-static void extr_change_3() {
-	change_extr(3);
-	lcd_return_to_status();
-}
-
-//wrapper functions for unloading filament
-void extr_unload_all() {
-	if (degHotend0() > EXTRUDE_MINTEMP) {
-		for (int i = 0; i < 4; i++) {
-			change_extr(i);
-			extr_unload();
-		}
-	}
-	else {
-		lcd_clear();
-		lcd_set_cursor(0, 0);
-		lcd_puts_P(_T(MSG_ERROR));
-		lcd_set_cursor(0, 2);
-		lcd_puts_P(_T(MSG_PREHEAT_NOZZLE));
-		delay(2000);
-		lcd_clear();
-		lcd_return_to_status();
-	}
-}
-
-//unloading just used filament (for snmm)
-void extr_unload_used() {
-	if (degHotend0() > EXTRUDE_MINTEMP) {
-		for (int i = 0; i < 4; i++) {
-			if (snmm_filaments_used & (1 << i)) {
-				change_extr(i);
-				extr_unload();
-			}
-		}
-		snmm_filaments_used = 0;
-	}
-	else {
-		lcd_clear();
-		lcd_set_cursor(0, 0);
-		lcd_puts_P(_T(MSG_ERROR));
-		lcd_set_cursor(0, 2);
-		lcd_puts_P(_T(MSG_PREHEAT_NOZZLE));
-		delay(2000);
-		lcd_clear();
-		lcd_return_to_status();
-	}
-}
-
-
-
-static void extr_unload_0() {
-	change_extr(0);
-	extr_unload();
-}
-static void extr_unload_1() {
-	change_extr(1);
-	extr_unload();
-}
-static void extr_unload_2() {
-	change_extr(2);
-	extr_unload();
-}
-static void extr_unload_3() {
-	change_extr(3);
-	extr_unload();
-}
-static void extr_unload_4() {
-	change_extr(4);
-	extr_unload();
-}
-
 static void fil_load_menu()
 {
 	MENU_BEGIN();
@@ -5519,9 +5127,8 @@ static void fil_load_menu()
 	MENU_ITEM_FUNCTION_P(_i("Load filament 3"), extr_adj_2);////MSG_LOAD_FILAMENT_3 c=17 r=0
 	MENU_ITEM_FUNCTION_P(_i("Load filament 4"), extr_adj_3);////MSG_LOAD_FILAMENT_4 c=17 r=0
 
-#ifdef SNMM_V2
-	MENU_ITEM_FUNCTION_P(_i("Load filament 5"), extr_adj_4);
-#endif
+	if (mmu_enabled)
+		MENU_ITEM_FUNCTION_P(_i("Load filament 5"), extr_adj_4);
 
 	MENU_END();
 }
@@ -5536,9 +5143,8 @@ static void fil_unload_menu()
 	MENU_ITEM_FUNCTION_P(_i("Unload filament 3"), extr_unload_2);////MSG_UNLOAD_FILAMENT_3 c=17 r=0
 	MENU_ITEM_FUNCTION_P(_i("Unload filament 4"), extr_unload_3);////MSG_UNLOAD_FILAMENT_4 c=17 r=0
 
-#ifdef SNMM_V2
-	MENU_ITEM_FUNCTION_P(_i("Unload filament 5"), extr_unload_4);////MSG_UNLOAD_FILAMENT_4 c=17 r=0
-#endif
+	if (mmu_enabled)
+		MENU_ITEM_FUNCTION_P(_i("Unload filament 5"), extr_unload_4);////MSG_UNLOAD_FILAMENT_4 c=17 r=0
 
 	MENU_END();
 }
@@ -5554,10 +5160,10 @@ static void change_extr_menu(){
 	MENU_END();
 }
 
-#endif
 
 //unload filament for single material printer (used in M702 gcode)
-void unload_filament() {
+void unload_filament()
+{
 	custom_message = true;
 	custom_message_type = 2;
 	lcd_setstatuspgm(_T(MSG_UNLOADING_FILAMENT));
@@ -5976,25 +5582,27 @@ static void lcd_main_menu()
   } 
   else 
   {
-	#if defined (SNMM) || defined (SNMM_V2)
-	MENU_ITEM_SUBMENU_P(_T(MSG_LOAD_FILAMENT), fil_load_menu);
-    #ifdef SNMM_V2
-	MENU_ITEM_GCODE_P(_T(MSG_UNLOAD_FILAMENT), PSTR("M702 C"));
-    #else
-	MENU_ITEM_SUBMENU_P(_T(MSG_UNLOAD_FILAMENT), fil_unload_menu);
-	MENU_ITEM_SUBMENU_P(_i("Change extruder"), change_extr_menu);////MSG_CHANGE_EXTR c=20 r=1
-    #endif
-
-	#else
-	  #ifdef FILAMENT_SENSOR
-	if ( ((fsensor_autoload_enabled == true) && (fsensor_enabled == true)))
-        MENU_ITEM_SUBMENU_P(_i("AutoLoad filament"), lcd_menu_AutoLoadFilament);////MSG_AUTOLOAD_FILAMENT c=17 r=0
+	if (mmu_enabled)
+	{
+		MENU_ITEM_SUBMENU_P(_T(MSG_LOAD_FILAMENT), fil_load_menu);
+		if (mmu_enabled)
+			MENU_ITEM_GCODE_P(_T(MSG_UNLOAD_FILAMENT), PSTR("M702 C"));
+		else
+		{
+			MENU_ITEM_SUBMENU_P(_T(MSG_UNLOAD_FILAMENT), fil_unload_menu);
+			MENU_ITEM_SUBMENU_P(_i("Change extruder"), change_extr_menu);////MSG_CHANGE_EXTR c=20 r=1
+		}
+	}
 	else
-      #endif //FILAMENT_SENSOR
-		MENU_ITEM_FUNCTION_P(_T(MSG_LOAD_FILAMENT), lcd_LoadFilament);
-	MENU_ITEM_SUBMENU_P(_T(MSG_UNLOAD_FILAMENT), lcd_unLoadFilament);
-    #endif
-
+	{
+#ifdef FILAMENT_SENSOR
+		if ( ((fsensor_autoload_enabled == true) && (fsensor_enabled == true)))
+			MENU_ITEM_SUBMENU_P(_i("AutoLoad filament"), lcd_menu_AutoLoadFilament);////MSG_AUTOLOAD_FILAMENT c=17 r=0
+		else
+#endif //FILAMENT_SENSOR
+			MENU_ITEM_FUNCTION_P(_T(MSG_LOAD_FILAMENT), lcd_LoadFilament);
+		MENU_ITEM_SUBMENU_P(_T(MSG_UNLOAD_FILAMENT), lcd_unLoadFilament);
+	}
 	MENU_ITEM_SUBMENU_P(_T(MSG_SETTINGS), lcd_settings_menu);
     if(!isPrintPaused) MENU_ITEM_SUBMENU_P(_T(MSG_MENU_CALIBRATION), lcd_calibration_menu);
 
diff --git a/Firmware/ultralcd.h b/Firmware/ultralcd.h
index df887456..77da5933 100644
--- a/Firmware/ultralcd.h
+++ b/Firmware/ultralcd.h
@@ -128,9 +128,8 @@ extern union MenuData menuData;
 
   void lcd_menu_statistics(); 
 
-  extern const char* lcd_display_message_fullscreen_P(const char *msg, uint8_t &nlines);
-  inline const char* lcd_display_message_fullscreen_P(const char *msg) 
-    { uint8_t nlines; return lcd_display_message_fullscreen_P(msg, nlines); }
+extern const char* lcd_display_message_fullscreen_P(const char *msg, uint8_t &nlines);
+extern const char* lcd_display_message_fullscreen_P(const char *msg);
 
   extern void lcd_wait_for_click();
   extern void lcd_show_fullscreen_message_and_wait_P(const char *msg);
@@ -186,10 +185,7 @@ extern union MenuData menuData;
   #endif
   extern int8_t SilentModeMenu;
 
-#if defined (SNMM) || defined (SNMM_V2) 
-  extern uint8_t snmm_extruder;
-#endif // defined (SNMM) || defined (SNMM_V2)
-
+  
   extern bool cancel_heatup;
   extern bool isPrintPaused;
       
diff --git a/Firmware/variants/1_75mm_MK2-RAMBo10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK2-RAMBo10a-E3Dv6full.h
index 6ca8b213..9783e9f6 100644
--- a/Firmware/variants/1_75mm_MK2-RAMBo10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK2-RAMBo10a-E3Dv6full.h
@@ -414,11 +414,6 @@ THERMISTORS SETTINGS
 
 #define DEFAULT_PID_TEMP 210
 
-#ifdef SNMM
-#define DEFAULT_RETRACTION 4 //used for PINDA temp calibration and pause print
-#else
-#define DEFAULT_RETRACTION 1 //used for PINDA temp calibration and pause print
-#endif
 
 #define END_FILE_SECTION 20000 //number of bytes from end of file used for checking if file is complete
 
diff --git a/Firmware/variants/1_75mm_MK2-RAMBo13a-E3Dv6full.h b/Firmware/variants/1_75mm_MK2-RAMBo13a-E3Dv6full.h
index d6352ae5..3ac39750 100644
--- a/Firmware/variants/1_75mm_MK2-RAMBo13a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK2-RAMBo13a-E3Dv6full.h
@@ -414,11 +414,6 @@ THERMISTORS SETTINGS
 
 #define DEFAULT_PID_TEMP 210
 
-#ifdef SNMM
-#define DEFAULT_RETRACTION 4 //used for PINDA temp calibration and pause print
-#else
-#define DEFAULT_RETRACTION 1 //used for PINDA temp calibration and pause print
-#endif
 
 #define END_FILE_SECTION 20000 //number of bytes from end of file used for checking if file is complete
 
diff --git a/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h
index 309ad57a..304cde4b 100644
--- a/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h
@@ -476,11 +476,6 @@
 
 #define MIN_PRINT_FAN_SPEED 75
 
-#ifdef SNMM
-#define DEFAULT_RETRACTION 4 //used for PINDA temp calibration and pause print
-#else
-#define DEFAULT_RETRACTION 1 //used for PINDA temp calibration and pause print
-#endif
 
 #define M600_TIMEOUT 600  //seconds
 
diff --git a/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h b/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h
index ad9d4a5b..9fccbfc2 100644
--- a/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h
@@ -477,11 +477,6 @@
 
 #define MIN_PRINT_FAN_SPEED 75
 
-#ifdef SNMM
-#define DEFAULT_RETRACTION 4 //used for PINDA temp calibration and pause print
-#else
-#define DEFAULT_RETRACTION 1 //used for PINDA temp calibration and pause print
-#endif
 
 #define M600_TIMEOUT 600  //seconds
 
diff --git a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
index 06fe8cbd..dbce6a96 100644
--- a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
@@ -594,11 +594,6 @@
 
 #define MIN_PRINT_FAN_SPEED 75
 
-#if defined (SNMM) || defined (SNMM_V2)
-#define DEFAULT_RETRACTION 4 //used for PINDA temp calibration and pause print
-#else
-#define DEFAULT_RETRACTION 1 //used for PINDA temp calibration and pause print
-#endif
 
 // How much shall the print head be lifted on power panic?
 // Ideally the Z axis will reach a zero phase of the stepper driver on power outage. To simplify this,
diff --git a/Firmware/variants/1_75mm_MK3-MMU-EINSy10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK3-MMU-EINSy10a-E3Dv6full.h
index ed6d0c3d..d572c7b4 100644
--- a/Firmware/variants/1_75mm_MK3-MMU-EINSy10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK3-MMU-EINSy10a-E3Dv6full.h
@@ -595,11 +595,6 @@
 
 #define MIN_PRINT_FAN_SPEED 75
 
-#if defined (SNMM) || defined (SNMM_V2)
-#define DEFAULT_RETRACTION 4 //used for PINDA temp calibration and pause print
-#else
-#define DEFAULT_RETRACTION 1 //used for PINDA temp calibration and pause print
-#endif
 
 // How much shall the print head be lifted on power panic?
 // Ideally the Z axis will reach a zero phase of the stepper driver on power outage. To simplify this,