diff --git a/radio/src/Makefile b/radio/src/Makefile
index ff25c54f0..5d36bb5c7 100644
--- a/radio/src/Makefile
+++ b/radio/src/Makefile
@@ -63,6 +63,10 @@ PCBREV =
 # Values = STD, FRSKY, FRSKY_SPORT, JETI, NMEA, ARDUPILOT, MAVLINK, TELEMETREZ
 EXT = STD
 
+# GUI enabled
+# Values = YES, NO
+GUI = YES
+
 # FAI mode
 # Values = YES, NO, CHOICE
 FAI = NO
@@ -81,7 +85,7 @@ HELI = NO
 
 # Enable templates menu
 # Values = YES, NO
-TEMPLATES = YES
+TEMPLATES = $(GUI)
 
 # Enable navigation with Pots / Sticks / Rotary encoders
 # Values = NO
@@ -942,7 +946,9 @@ else
   TTS_SRC = $(shell sh -c "if test -f $(STD_TTS_SRC); then echo $(STD_TTS_SRC); else echo translations/tts_en.cpp; fi")
 endif
 
-GUISRC = gui/$(GUIDIRECTORY)/helpers.cpp gui/$(GUIDIRECTORY)/navigation.cpp gui/$(GUIDIRECTORY)/popups.cpp gui/$(GUIDIRECTORY)/widgets.cpp gui/$(GUIDIRECTORY)/menus.cpp $(GUIMODELSRC) $(GUIGENERALSRC) gui/$(GUIDIRECTORY)/view_main.cpp gui/$(GUIDIRECTORY)/view_statistics.cpp
+ifeq ($(GUI), YES)
+  GUISRC = gui/$(GUIDIRECTORY)/helpers.cpp gui/$(GUIDIRECTORY)/navigation.cpp gui/$(GUIDIRECTORY)/popups.cpp gui/$(GUIDIRECTORY)/widgets.cpp gui/$(GUIDIRECTORY)/menus.cpp $(GUIMODELSRC) $(GUIGENERALSRC) gui/$(GUIDIRECTORY)/view_main.cpp gui/$(GUIDIRECTORY)/view_statistics.cpp
+endif
 
 CPPSRC += opentx.cpp functions.cpp strhelpers.cpp $(PULSESSRC) switches.cpp curves.cpp mixer.cpp stamp.cpp $(GUISRC) $(EEPROMSRC) gui/$(GUIDIRECTORY)/lcd.cpp gui/$(GUIDIRECTORY)/splash.cpp keys.cpp maths.cpp translations.cpp gui/$(GUIDIRECTORY)/fonts.cpp $(TTS_SRC)
 
diff --git a/radio/src/functions.cpp b/radio/src/functions.cpp
index d73796b47..ca54edeb5 100644
--- a/radio/src/functions.cpp
+++ b/radio/src/functions.cpp
@@ -311,6 +311,7 @@ void evalFunctions()
           case FUNC_INSTANT_TRIM:
             newActiveFunctions |= (1 << FUNCTION_INSTANT_TRIM);
             if (!isFunctionActive(FUNCTION_INSTANT_TRIM)) {
+#if defined(GUI)
               if (g_menuStack[0] == menuMainView
 #if defined(FRSKY)
                 || g_menuStack[0] == menuTelemetryFrsky
@@ -319,7 +320,9 @@ void evalFunctions()
                 || g_menuStack[0] == menuMainViewChannelsMonitor
                 || g_menuStack[0] == menuChannelsView
 #endif
-              ) {
+              )
+#endif
+              {
                 instantTrim();
               }
             }
diff --git a/radio/src/gui/9X/menus.h b/radio/src/gui/9X/menus.h
index d9cfe1779..7c783871d 100755
--- a/radio/src/gui/9X/menus.h
+++ b/radio/src/gui/9X/menus.h
@@ -385,7 +385,14 @@ void displayWarning(uint8_t event);
   extern uint8_t s_warning_info_flags;
 #endif
 
-#if defined(CPUARM)
+#if !defined(GUI)
+  #define DISPLAY_WARNING(...)
+  #define POPUP_WARNING(...)
+  #define POPUP_CONFIRMATION(...)
+  #define POPUP_INPUT(...)
+  #define WARNING_INFO_FLAGS    0
+  #define SET_WARNING_INFO(...)
+#elif defined(CPUARM)
   #define DISPLAY_WARNING       (*popupFunc)
   #define POPUP_WARNING(s)      (s_warning = s, s_warning_info = 0, popupFunc = displayWarning)
   #define POPUP_CONFIRMATION(s) (s_warning = s, s_warning_type = WARNING_TYPE_CONFIRM, s_warning_info = 0, popupFunc = displayWarning)
diff --git a/radio/src/main_avr.cpp b/radio/src/main_avr.cpp
index 27f48fd03..ac8f0385c 100644
--- a/radio/src/main_avr.cpp
+++ b/radio/src/main_avr.cpp
@@ -125,6 +125,7 @@ void perMain()
   if (sticks_evt) evt = sticks_evt;
 #endif
 
+#if defined(GUI)
   const char *warn = s_warning;
   uint8_t menu = s_menu_count;
 
@@ -153,6 +154,7 @@ void perMain()
   drawStatusLine();
 
   lcdRefresh();
+#endif
 
   if (SLAVE_MODE()) {
     JACK_PPM_OUT();
diff --git a/radio/src/opentx.cpp b/radio/src/opentx.cpp
index 72d21f001..95a4b91a8 100644
--- a/radio/src/opentx.cpp
+++ b/radio/src/opentx.cpp
@@ -143,9 +143,12 @@ void per10ms()
   }
 #endif
 
+#if defined(GUI)
   if (lightOffCounter) lightOffCounter--;
   if (flashCounter) flashCounter--;
   if (s_noHi) s_noHi--;
+#endif
+
   if (trimsCheckTimer) trimsCheckTimer--;
   if (ppmInValid) ppmInValid--;
 
@@ -1971,9 +1974,12 @@ void opentxStart()
   checkAlarm();
   checkAll();
 
+#if defined(GUI)
   if (g_eeGeneral.chkSum != evalChkSum()) {
     chainMenu(menuFirstCalib);
   }
+#endif
+
 }
 
 #if defined(CPUARM) || defined(CPUM2560)
@@ -2128,7 +2134,7 @@ uint8_t getSticksNavigationEvent()
 void checkBattery()
 {
   static uint8_t counter = 0;
-#if !defined(COLORLCD)
+#if defined(GUI) && !defined(COLORLCD)
   // TODO not the right menu I think ...
   if (g_menuStack[g_menuStackPtr] == menuGeneralDiagAna) {
     g_vbat100mV = 0;
@@ -2670,9 +2676,11 @@ int main(void)
 
   stack_paint();
 
+#if defined(GUI)
   g_menuStack[0] = menuMainView;
-#if MENUS_LOCK != 2/*no menus*/
-  g_menuStack[1] = menuModelSelect;
+  #if MENUS_LOCK != 2/*no menus*/
+    g_menuStack[1] = menuModelSelect;
+  #endif
 #endif
 
 #if !defined(PCBTARANIS)