diff --git a/MicroDexed.ino b/MicroDexed.ino
index 2d12de5..eb24cdc 100644
--- a/MicroDexed.ino
+++ b/MicroDexed.ino
@@ -345,7 +345,7 @@ void setup()
   chorus_mixer.gain(0, 1.0);
   chorus_mixer.gain(1, 0.0);
 
-  delay1.delay(0, mapfloat(effect_delay_feedback, 0, ENC_DELAY_TIME_STEPS, 0.0, DELAY_MAX_TIME));
+  delay1.delay(0, 0.0);
   // delay_fb_mixer is the feedback-adding mixer, delay_mixer_r the whole delay (with/without feedback) mixer
   delay_fb_mixer.gain(0, 1.0); // original signal
   delay_fb_mixer.gain(1, mapfloat(effect_delay_feedback, 0, ENC_DELAY_FB_STEPS, 0.0, 1.0)); // amount of feedback
diff --git a/UI.hpp b/UI.hpp
index dbbfc93..9ab5168 100644
--- a/UI.hpp
+++ b/UI.hpp
@@ -677,7 +677,7 @@ void UI_func_reverb_roomsize(uint8_t param)
     lcd.setCursor(0, 1);
     lcd_display_int(configuration.reverb_roomsize, 3, true, true, false);
 
-    freeverbs1.roomsize(configuration.reverb_roomsize / 100);
+    freeverbs1.roomsize(configuration.reverb_roomsize / 100.0);
   }
 
   if (LCDML.FUNC_close())     // ****** STABLE END *********
@@ -718,7 +718,7 @@ void UI_func_reverb_damping(uint8_t param)
     lcd.setCursor(0, 1);
     lcd_display_int(configuration.reverb_damping, 3, true, true, false);
 
-    freeverbs1.damping(configuration.reverb_damping / 100);
+    freeverbs1.damping(configuration.reverb_damping / 100.0);
   }
 
   if (LCDML.FUNC_close())     // ****** STABLE END *********
@@ -760,8 +760,8 @@ void UI_func_reverb_level(uint8_t param)
     lcd.setCursor(0, 1);
     lcd_display_int(configuration.reverb_level, 3, true, true, false);
 
-    reverb_mixer_r.gain(1, configuration.reverb_level / 100);
-    reverb_mixer_l.gain(1, configuration.reverb_level / 100);
+    reverb_mixer_r.gain(1, configuration.reverb_level / 100.0);
+    reverb_mixer_l.gain(1, configuration.reverb_level / 100.0);
   }
 
   if (LCDML.FUNC_close())     // ****** STABLE END *********
@@ -896,7 +896,7 @@ void UI_func_chorus_depth(uint8_t param)
     lcd.setCursor(0, 1);
     lcd_display_int(configuration.chorus_depth, 3, true, true, false);
 
-    modulator.amplitude(configuration.chorus_depth / 100);
+    modulator.amplitude(configuration.chorus_depth / 100.0);
   }
 
   if (LCDML.FUNC_close())     // ****** STABLE END *********
@@ -937,7 +937,7 @@ void UI_func_chorus_level(uint8_t param)
     lcd.setCursor(0, 1);
     lcd_display_int(configuration.chorus_level, 3, true, true, false);
 
-    chorus_mixer.gain(1, configuration.chorus_level / 100);
+    chorus_mixer.gain(1, configuration.chorus_level / 100.0);
   }
 
   if (LCDML.FUNC_close())     // ****** STABLE END *********
@@ -948,17 +948,126 @@ void UI_func_chorus_level(uint8_t param)
 
 void UI_func_delay_time(uint8_t param)
 {
-  ;
+  if (LCDML.FUNC_setup())         // ****** SETUP *********
+  {
+    // setup function
+    lcd.setCursor(0, 0);
+    lcd.print(F("Delay Time"));
+  }
+
+  if (LCDML.FUNC_loop())          // ****** LOOP *********
+  {
+    if (LCDML.BT_checkEnter())
+    {
+      LCDML.FUNC_goBackToMenu();
+    }
+    else if (LCDML.BT_checkDown())
+    {
+      if (configuration.delay_time < DELAY_TIME_MAX)
+      {
+        configuration.delay_time += 10;
+      }
+    }
+    else if (LCDML.BT_checkUp())
+    {
+      if (configuration.delay_time > DELAY_TIME_MIN)
+      {
+        configuration.delay_time -= 10;
+      }
+    }
+    lcd.setCursor(0, 1);
+    lcd_display_int(configuration.delay_time * 10, 3, true, true, false);
+
+    delay1.delay(0, configuration.delay_time * 10);
+  }
+
+  if (LCDML.FUNC_close())     // ****** STABLE END *********
+  {
+    // you can here reset some global vars or do nothing
+  }
 }
 
 void UI_func_delay_feedback(uint8_t param)
 {
-  ;
+  if (LCDML.FUNC_setup())         // ****** SETUP *********
+  {
+    // setup function
+    lcd.setCursor(0, 0);
+    lcd.print(F("Delay Feedback"));
+  }
+
+  if (LCDML.FUNC_loop())          // ****** LOOP *********
+  {
+    if (LCDML.BT_checkEnter())
+    {
+      LCDML.FUNC_goBackToMenu();
+    }
+    else if (LCDML.BT_checkDown())
+    {
+      if (configuration.delay_feedback < DELAY_FEEDBACK_MAX)
+      {
+        configuration.delay_feedback++;
+      }
+    }
+    else if (LCDML.BT_checkUp())
+    {
+      if (configuration.delay_feedback > DELAY_FEEDBACK_MIN)
+      {
+        configuration.delay_feedback--;
+      }
+    }
+    lcd.setCursor(0, 1);
+    lcd_display_int(configuration.delay_feedback, 3, true, true, false);
+
+    delay_fb_mixer.gain(1, configuration.delay_feedback / 100.0 ); // amount of feedback
+    delay_mixer.gain(0, 1.0 - configuration.delay_feedback / 100.0); // original signal
+  }
+
+  if (LCDML.FUNC_close())     // ****** STABLE END *********
+  {
+    // you can here reset some global vars or do nothing
+  }
 }
 
 void UI_func_delay_level(uint8_t param)
 {
-  ;
+  if (LCDML.FUNC_setup())         // ****** SETUP *********
+  {
+    // setup function
+    lcd.setCursor(0, 0);
+    lcd.print(F("Delay Level"));
+  }
+
+  if (LCDML.FUNC_loop())          // ****** LOOP *********
+  {
+    if (LCDML.BT_checkEnter())
+    {
+      LCDML.FUNC_goBackToMenu();
+    }
+    else if (LCDML.BT_checkDown())
+    {
+      if (configuration.delay_level < DELAY_LEVEL_MAX)
+      {
+        configuration.delay_level++;
+      }
+    }
+    else if (LCDML.BT_checkUp())
+    {
+      if (configuration.delay_level > DELAY_LEVEL_MIN)
+      {
+        configuration.delay_level--;
+      }
+    }
+    lcd.setCursor(0, 1);
+    lcd_display_int(configuration.delay_level, 3, true, true, false);
+
+    delay_mixer.gain(1, configuration.delay_level / 100.0);
+  }
+
+  if (LCDML.FUNC_close())     // ****** STABLE END *********
+  {
+    // you can here reset some global vars or do nothing
+  }
 }
 
 void UI_func_filter_cutoff(uint8_t param)
diff --git a/config.h b/config.h
index 6d34375..ce0cef6 100644
--- a/config.h
+++ b/config.h
@@ -88,7 +88,7 @@
 #else
 #define AUDIO_MEM 225
 #endif
-#define DELAY_MAX_TIME 600.0
+#define DELAY_MAX_TIME 600
 #define REDUCE_LOUDNESS 1
 #else
 #if AUDIO_BLOCK_SAMPLES == 64
@@ -96,7 +96,7 @@
 #else
 #define AUDIO_MEM 450
 #endif
-#define DELAY_MAX_TIME 1200.0
+#define DELAY_MAX_TIME 1200
 #define REDUCE_LOUDNESS 1
 #endif
 #define SAMPLE_RATE 44100
@@ -246,6 +246,18 @@
 #define CHORUS_LEVEL_MAX 100
 #define CHORUS_LEVEL_DEFAULT 0
 
+#define DELAY_TIME_MIN 0
+#define DELAY_TIME_MAX DELAY_MAX_TIME/10
+#define DELAY_TIME_DEFAULT 0
+
+#define DELAY_FEEDBACK_MIN 0
+#define DELAY_FEEDBACK_MAX 100
+#define DELAY_FEEDBACK_DEFAULT 0
+
+#define DELAY_LEVEL_MIN 0
+#define DELAY_LEVEL_MAX 100
+#define DELAY_LEVEL_DEFAULT 0
+
 // struct for holding the current configuration
 struct config_t {
   uint32_t checksum;
@@ -262,6 +274,9 @@ struct config_t {
   uint8_t chorus_waveform;
   uint8_t chorus_depth;
   uint8_t chorus_level;
+  uint8_t delay_time;
+  uint8_t delay_feedback;
+  uint8_t delay_level;
 };
 
 // struct for smoothing value changes