diff --git a/.cproject b/.cproject
index a8e672b..dc16441 100644
--- a/.cproject
+++ b/.cproject
@@ -15,7 +15,7 @@
 				</extensions>
 			</storageModule>
 			<storageModule moduleId="cdtBuildSystem" version="4.0.0">
-				<configuration artifactExtension="elf" artifactName="${ProjName}" buildArtefactType="org.eclipse.cdt.build.core.buildArtefactType.exe" buildProperties="org.eclipse.cdt.build.core.buildArtefactType=org.eclipse.cdt.build.core.buildArtefactType.exe,org.eclipse.cdt.build.core.buildType=org.eclipse.cdt.build.core.buildType.debug" cleanCommand="rm -rf" description="" errorParsers="org.eclipse.cdt.core.GASErrorParser;org.eclipse.cdt.core.GmakeErrorParser;org.eclipse.cdt.core.GLDErrorParser;org.eclipse.cdt.core.CWDLocator;org.eclipse.cdt.core.GCCErrorParser;com.st.stm32cube.ide.mcu.build.STMGCCErrorParser" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.debug.1136359567" name="Debug" parent="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.debug">
+				<configuration artifactExtension="elf" artifactName="${ProjName}" buildArtefactType="org.eclipse.cdt.build.core.buildArtefactType.exe" buildProperties="org.eclipse.cdt.build.core.buildArtefactType=org.eclipse.cdt.build.core.buildArtefactType.exe,org.eclipse.cdt.build.core.buildType=org.eclipse.cdt.build.core.buildType.debug" cleanCommand="rm -rf" description="" errorParsers="org.eclipse.cdt.core.GASErrorParser;org.eclipse.cdt.core.GmakeErrorParser;org.eclipse.cdt.core.GLDErrorParser;org.eclipse.cdt.core.CWDLocator;org.eclipse.cdt.core.GCCErrorParser;com.st.stm32cube.ide.mcu.build.STMGCCErrorParser" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.debug.1136359567" name="Debug" parent="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.debug" postannouncebuildStep="Print RAM und ROM Belegung" postbuildStep="python ..\\usage.py &quot;D:\Program Files\Arm GNU Toolchain arm-none-eabi\13.2 Rel1\bin\arm-none-eabi-size&quot; Elektronische_Last.elf ..\\STM32G071KBTX_FLASH.ld">
 					<folderInfo id="com.st.stm32cube.ide.mcu.gnu.managedbuild.config.exe.debug.1136359567." name="/" resourcePath="">
 						<toolChain id="com.st.stm32cube.ide.mcu.gnu.managedbuild.toolchain.exe.debug.1566530055" name="MCU ARM GCC" nonInternalBuilderId="com.st.stm32cube.ide.mcu.gnu.managedbuild.builder" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.toolchain.exe.debug">
 							<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_mcu.812600019" name="MCU" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.option.target_mcu" useByScannerDiscovery="true" value="STM32G071KBTx" valueType="string"/>
diff --git a/Source/ElektronischeLast.cpp b/Source/ElektronischeLast.cpp
index c5941ff..18e1420 100644
--- a/Source/ElektronischeLast.cpp
+++ b/Source/ElektronischeLast.cpp
@@ -22,8 +22,7 @@
 #include "FanControl.hpp"
 #include "CLI.h"
 #include "I2C.hpp"
-#include "Display.hpp"
-#include "Timer.hpp"
+#include "Menu.hpp"
 
 using namespace ElektronischeLast;
 
@@ -50,13 +49,12 @@ static CLI_Command_t commands[] =
   { "reboot", "System neu starten", reboot },
 };
 
-static Timer timer = Timer();
 static LED led = LED(500U);
-static Display lcd = Display();
 static FanControl fan = FanControl();
 static iI2C eeprom = iI2C(0xA0U);
 static iDAC dac = iDAC();
 static iADC adc = iADC();;
+static Menu menu = Menu();
 static std::uint32_t i_soll = 0U;
 static PIDController pid =
 {
@@ -83,10 +81,9 @@ int main (void)
   printf("\r\nElektronische Last\r\n");
   CLI_Init(commands, sizeof(commands)/sizeof(commands[0]));
   led.init();
-  lcd.init();
   fan.init();
   eeprom.init();
-  timer.start(500U);
+  menu.init();
 
   float voltage_gain = NAN;
   float current_gain = NAN;
@@ -113,35 +110,14 @@ int main (void)
 
   PIDController_Init(&pid);
 
-  while(lcd.ready_for_data() == false)
-  {
-    lcd.run();
-  }
-  uint8_t degreeSymbol[] = {
-    0x0E,
-    0x0A,
-    0x0E,
-    0x00,
-    0x00,
-    0x00,
-    0x00,
-    0x00
-  };
-  lcd.lcd_set_user_chars(Display::SecondSign, degreeSymbol);
-  while(lcd.ready_for_data() == false)
-  {
-    lcd.run();
-  }
-  lcd.lcd_set_display(Display::eDispalyOn, Display::eCursorOff, Display::eCursorBlinkOff);
-  lcd.print(Display::Line1, "Elektronische Last");
-
   while(1)
   {
     led.blink();
 
+    menu.run();
+
     if(last_tick != systick)
     {
-      timer.tick();
       last_tick = systick;
       switch(modus)
       {
@@ -171,37 +147,8 @@ int main (void)
           temperatur = adc.get_temperature();
           geschwindigkeit = fan.get_speed();
 
-          if(timer.elapsed())
-          {
-            if(lcd.ready_for_data())
-            {
-              timer.start(500U);
+          menu.set_measurements(spannung, strom, temperatur, geschwindigkeit);
 
-              char data[17U];
-
-              int32_t len = snprintf(data, sizeof(data) - 1, "%2" PRIu32 ".%02" PRIu32 "V",
-                                     spannung / 1000U, spannung % 1000U / 10U);
-              std::memset(&data[len], (int)' ', 16U - len);
-              snprintf(&data[12], sizeof(data) - 12, "%2" PRIu32 "%cC", temperatur, 0x1);
-							data[16] = '\0';
-							lcd.print(Display::Line1, data);
-
-							if(strom < 1000UL)
-							{
-							  len = snprintf(data, sizeof(data) - 1, "%3" PRIu32 "mA", strom);
-							}
-							else
-							{
-                len = snprintf(data, sizeof(data) - 1, "%" PRIu32 ".%02" PRIu32 "A",
-                                strom / 1000U, strom % 1000U / 10U);
-							}
-							std::memset(&data[len], (int)' ', 16U - len);
-							snprintf(&data[9], sizeof(data) - 9, "%4" PRIu32 "RPM", geschwindigkeit);
-							data[16] = '\0';
-							lcd.print(Display::Line2, data);
-            }
-          }
-          lcd.run();
           break;
       }
       serial_cyclic();
@@ -209,6 +156,16 @@ int main (void)
   }
 }
 
+uint32_t get_current_sollstrom(void)
+{
+  return i_soll;
+}
+
+void set_new_sollstrom(uint32_t soll)
+{
+  i_soll = soll;
+}
+
 /**
  * @brief  Callback Function for Command Line
  * @param  [in] pfvOutFunction Function to Print Data to Output
diff --git a/usage.py b/usage.py
new file mode 100644
index 0000000..cb423ef
--- /dev/null
+++ b/usage.py
@@ -0,0 +1,82 @@
+import sys
+import subprocess
+import re
+
+
+def draw(perc):
+    print("-", end="")
+    for i in range(100):
+        print("-", end="")
+
+    print("-")
+
+    print("|", end="")
+    for i in range(100):
+        if i < perc:
+            print("*", end="")
+        else:
+            print(" ", end="")
+
+    print("|")
+
+    print("-", end="")
+    for i in range(100):
+        print("-", end="")
+
+    print("-")
+
+
+def get_flash(f):
+    rom = 0
+    l = re.search("FLASH.*LENGTH.*", f)
+    if l is not None:
+        l = re.search("LENGTH.=.[0-9]*.K", l.group())
+        if l is not None:
+            l = re.search("[0-9].*", l.group())
+            if l is not None:
+                rom = l.group().replace("K", "")
+    return int(rom)
+
+
+def get_ram(f):
+    ram = 0
+    l = re.search("RAM.*LENGTH.*", f)
+    if l is not None:
+        l = re.search("LENGTH.=.[0-9]*K", l.group())
+        if l is not None:
+            l = re.search("[0-9].*", l.group())
+            if l is not None:
+                ram = l.group().replace("K", "")
+    l = re.search("CCMRAM.*LENGTH.*", f)
+    if l is not None:
+        l = re.search("LENGTH.=.[0-9]*.K", l.group())
+        if l is not None:
+            l = re.search("[0-9].*", l.group())
+            if l is not None:
+                ram = int(ram) + int(l.group().replace("K", ""))
+    return ram
+
+
+def main():
+    argc = len(sys.argv)
+    if argc == 4:
+        var = subprocess.check_output([sys.argv[1], str(sys.argv[2])], universal_newlines=True)
+        f = open(sys.argv[3]).read()
+        mrom = get_flash(f)
+        mram = get_ram(f)
+        mrom = int(mrom) * 1024
+        mram = int(mram) * 1024
+        var = str(var).replace("\t", " ").splitlines()[1].split()
+        romp = 100.0 / float(mrom) * float(int(var[0]))
+        ramp = 100.0 / float(mram) * float(int(var[1]) + int(var[2]))
+        print("RAM: {:.1f}%:".format(ramp))
+        draw(ramp)
+        print("FLASH: {:.1f}%".format(romp))
+        draw(romp)
+    else:
+        print("Invalid number of arguments!")
+
+
+if __name__ == "__main__":
+    # execute only if run as a script
+    main()