diff --git a/espmusicmouse/host_driver/host_driver.py b/espmusicmouse/host_driver/host_driver.py
index cdb82ff..dcf1740 100644
--- a/espmusicmouse/host_driver/host_driver.py
+++ b/espmusicmouse/host_driver/host_driver.py
@@ -35,12 +35,15 @@ led_ring_effect_to_message_id = {
     EffectCircularConfig: 2,
     EffectRandomTwoColorInterpolationConfig: 3,
     EffectSwipeAndChange: 4,
+    EffectReverseSwipe: 5,
 }
 
 mouse_led_effect_to_message_id = {
-    EffectStaticConfig: 5,
-    EffectCircularConfig: 6,
-    EffectRandomTwoColorInterpolationConfig: 7
+    EffectStaticConfig: 6,
+    EffectCircularConfig: 7,
+    EffectRandomTwoColorInterpolationConfig: 8,
+    EffectSwipeAndChange: 9,
+    EffectReverseSwipe: 10,
 }
 
 
diff --git a/espmusicmouse/host_driver/led_cmds.py b/espmusicmouse/host_driver/led_cmds.py
index 43520a1..a232218 100644
--- a/espmusicmouse/host_driver/led_cmds.py
+++ b/espmusicmouse/host_driver/led_cmds.py
@@ -67,7 +67,7 @@ class EffectStaticConfig:
 class EffectAlexaSwipeConfig:
     primary_color_width: float = 20  # in degrees
     transition_width: float = 30  # in degrees
-    swipe_speed: float = 3 * 360  # in degrees per second
+    swipe_speed: float = 2 * 360  # in degrees per second
     bell_curve_width_in_leds: float = 3
     start_position: float = 180  # in degrees
     forward: bool = True
@@ -124,4 +124,17 @@ class EffectSwipeAndChange:
         return self.swipe.as_bytes() + self.change.as_bytes()
 
     def __repr__(self) -> str:
-        return f"Swipe and Change: \n   {str(self.swipe)}\n   {str(self.change)}"
\ No newline at end of file
+        return f"Swipe and Change: \n   {str(self.swipe)}\n   {str(self.change)}"
+
+
+@dataclass
+class EffectReverseSwipe:
+    swipeSpeed: float = 2 * 360
+    bellCurveWidthInLeds: float = 3
+    startPosition: float = 180
+
+    def as_bytes(self) -> bytes:
+        return struct.pack("<fff", self.swipeSpeed, self.bellCurveWidthInLeds, self.startPosition)
+
+    def __repr__(self) -> str:
+        return f"Reverse swipe, speed {self.swipeSpeed}, width in leds {self.bellCurveWidthInLeds}, start position {self.startPosition}"
\ No newline at end of file
diff --git a/espmusicmouse/host_driver/main.py b/espmusicmouse/host_driver/main.py
index f31b7e4..7a6139a 100644
--- a/espmusicmouse/host_driver/main.py
+++ b/espmusicmouse/host_driver/main.py
@@ -2,10 +2,11 @@ import asyncio
 import serial_asyncio
 from led_cmds import (ColorRGBW, ColorHSV, EffectStaticConfig,
                       EffectRandomTwoColorInterpolationConfig, EffectAlexaSwipeConfig,
-                      EffectSwipeAndChange)
+                      EffectSwipeAndChange, EffectReverseSwipe)
 from host_driver import MusicMouseProtocol, RfidTokenRead, RotaryEncoderEvent, ButtonEvent, TouchButton, TouchButtonPress, TouchButtonRelease
 from player import AudioPlayer
 from glob import glob
+from copy import deepcopy
 import os
 
 MUSIC_FOLDER = "/home/martin/code/musicmouse/espmusicmouse/host_driver/music"
@@ -75,12 +76,14 @@ def on_rfid(protocol, tagid):
     if tagid == bytes.fromhex("0000000000"):
         # Off
         if audio_player.is_playing():
-            ring_eff = EffectAlexaSwipeConfig()
-            ring_eff.forward = False
+            ring_eff = EffectReverseSwipe()
+            mouse_eff = EffectReverseSwipe()
+            mouse_eff.startPosition = 6 / 45 * 360
         else:
             ring_eff = EffectStaticConfig(ColorRGBW(0, 0, 0, 0))
+            mouse_eff = EffectStaticConfig(ColorRGBW(0, 0, 0, 0))
         protocol.led_ring_effect(ring_eff)
-        protocol.mouse_led_effect(EffectStaticConfig(ColorRGBW(0, 0, 0, 0)))
+        protocol.mouse_led_effect(mouse_eff)
         audio_player.pause()
 
         last_figure = current_figure
@@ -96,6 +99,8 @@ def on_rfid(protocol, tagid):
         protocol.led_ring_effect(ring_eff)
 
         mouse_eff = EffectStaticConfig(ccfg.background)
+        mouse_eff = deepcopy(ring_eff)
+        mouse_eff.swipe.start_position = 6 / 45 * 360
         protocol.mouse_led_effect(mouse_eff)
 
         if figure in playlists:
@@ -127,8 +132,17 @@ def on_firmware_msg(protocol: MusicMouseProtocol, message):
                                                      *mouse_leds[message.touch_button]))
     elif isinstance(message, TouchButtonRelease):
         ccfg = color_cfg[current_figure]
-        color = ccfg.background if audio_player.is_playing() else ColorRGBW(0, 0, 0, 0)
-        protocol.mouse_led_effect(EffectStaticConfig(color, *mouse_leds[message.touch_button]))
+        eff_change = EffectRandomTwoColorInterpolationConfig()
+        eff_static = EffectStaticConfig(ColorRGBW(0, 0, 0, 0), *mouse_leds[message.touch_button])
+        if audio_player.is_playing():
+            eff_static.color = ccfg.primary
+        protocol.mouse_led_effect(eff_static)
+
+        if audio_player.is_playing():
+            eff_change.color1 = ccfg.primary
+            eff_change.color2 = ccfg.secondary
+            eff_change.start_with_existing = True
+            protocol.mouse_led_effect(eff_change)
 
 
 loop = asyncio.get_event_loop()
diff --git a/espmusicmouse/lib/ledtl/effects/AlexaSwipe.h b/espmusicmouse/lib/ledtl/effects/AlexaSwipe.h
index f063e9e..29169f7 100644
--- a/espmusicmouse/lib/ledtl/effects/AlexaSwipe.h
+++ b/espmusicmouse/lib/ledtl/effects/AlexaSwipe.h
@@ -55,7 +55,7 @@ public:
     }
   }
 
-  bool finished() { return finished_; }
+  bool finished() const { return finished_; }
 
   int operator()()
   {
@@ -90,7 +90,7 @@ public:
 private:
   void getParams(float x, float &interpFac, float &brightness)
   {
-    brightness = (x < bellCurveWidth_) ? bellCurveApproximation(bellCurveWidth_ / 2 - x, invBellCurveWidth_) : 1.0f;
+    brightness = stepFunction(x, bellCurveWidth_, invBellCurveWidth_);
     if (x < primaryColorWidth_)
       interpFac = 0.0f;
     else if (x > primaryColorWidth_ + transitionWidth_)
diff --git a/espmusicmouse/lib/ledtl/effects/Common.h b/espmusicmouse/lib/ledtl/effects/Common.h
index 9c3ec2b..a294101 100644
--- a/espmusicmouse/lib/ledtl/effects/Common.h
+++ b/espmusicmouse/lib/ledtl/effects/Common.h
@@ -7,6 +7,7 @@ enum class EffectId
   ALEXA_SWIPE,
   RANDOM_TWO_COLOR_INTERPOLATION,
   SWIPE_AND_CHANGE, // combination of ALEXA_SWIPE and RANDOM_TWO_COLOR_INTERPOLATION
+  REVERSE_SWIPE,
 };
 
 template <EffectId id>
diff --git a/espmusicmouse/lib/ledtl/effects/ReverseSwipe.h b/espmusicmouse/lib/ledtl/effects/ReverseSwipe.h
new file mode 100644
index 0000000..7c5ad3c
--- /dev/null
+++ b/espmusicmouse/lib/ledtl/effects/ReverseSwipe.h
@@ -0,0 +1,112 @@
+
+#pragma once
+
+#include "effects/Common.h"
+#include "helpers/BellCurve.h"
+
+#pragma pack(push, 1)
+struct EffectReverseSwipeConfig
+{
+  float swipeSpeed; // in degrees per second
+  float bellCurveWidthInLeds;
+  float startPosition;
+};
+#pragma pack(pop)
+
+template <typename TLedStrip>
+class EffectReverseSwipe
+{
+
+public:
+  static constexpr auto NUM_LEDS = numLeds<TLedStrip>();
+  static constexpr int DELAY_MS = 10;
+
+  using ConfigType = EffectReverseSwipeConfig;
+
+  EffectReverseSwipe(const EffectReverseSwipeConfig &cfg, TLedStrip &ledStrip)
+      : ledStrip_(ledStrip),
+        currentPosition_(float(NUM_LEDS) / 2 + cfg.bellCurveWidthInLeds),
+        bellCurveWidth_(cfg.bellCurveWidthInLeds),
+        invBellCurveWidth_(1.0f / cfg.bellCurveWidthInLeds),
+        speed_(cfg.swipeSpeed / 360 / 1000 * NUM_LEDS * DELAY_MS),
+        startPosition_(cfg.startPosition / 360.0f * NUM_LEDS),
+        finished_(false)
+  {
+    for (int i = 0; i < NUM_LEDS; ++i)
+      state_[i] = getLedRGBW(ledStrip_, i);
+  }
+
+  bool finished() const { return finished_; }
+
+  int operator()()
+  {
+    if (finished_)
+      return 60000;
+
+    const auto width = std::min(int(currentPosition_ + 1), int(NUM_LEDS / 2) + 1);
+
+    {
+      float brightness = stepFunction(currentPosition_, bellCurveWidth_, invBellCurveWidth_);
+      ColorRGBW &prevC = state_[ledStrip_.normalizeIdx(startPosition_)];
+      setLedRGBW(ledStrip_, startPosition_, prevC * brightness);
+    }
+
+    for (int i = 1; i < width; ++i)
+    {
+      const float x = currentPosition_ - float(i);
+      if (x > 0.0f)
+      {
+        const int led1 = startPosition_ + i;
+        const int led2 = startPosition_ - i;
+        float brightness = stepFunction(x, bellCurveWidth_, invBellCurveWidth_);
+        ColorRGBW &prevC1 = state_[ledStrip_.normalizeIdx(led1)];
+        ColorRGBW &prevC2 = state_[ledStrip_.normalizeIdx(led2)];
+
+        setLedRGBW(ledStrip_, led1, prevC1 * brightness);
+        setLedRGBW(ledStrip_, led2, prevC2 * brightness);
+      }
+    }
+
+    currentPosition_ -= speed_;
+    if (currentPosition_ < 0)
+    {
+      finished_ = true;
+      clear(ledStrip_);
+    }
+
+    return DELAY_MS;
+  }
+
+private:
+  TLedStrip &ledStrip_;
+  float currentPosition_;
+
+  float bellCurveWidth_;
+  float invBellCurveWidth_;
+  float speed_;
+
+  int startPosition_;
+
+  bool finished_;
+
+  ColorRGBW state_[NUM_LEDS];
+};
+
+// Traits
+template <>
+struct EffectIdToConfig<EffectId::REVERSE_SWIPE>
+{
+  using type = EffectReverseSwipeConfig;
+};
+
+template <>
+struct EffectConfigToId<EffectReverseSwipeConfig>
+{
+  static constexpr auto id = EffectId::REVERSE_SWIPE;
+};
+
+template <typename TLedStrip>
+struct EffectIdToClass<EffectId::REVERSE_SWIPE, TLedStrip>
+{
+  using type = EffectReverseSwipe<TLedStrip>;
+};
\ No newline at end of file
diff --git a/espmusicmouse/lib/ledtl/helpers/BellCurve.h b/espmusicmouse/lib/ledtl/helpers/BellCurve.h
index fcfbc36..f18d7e8 100644
--- a/espmusicmouse/lib/ledtl/helpers/BellCurve.h
+++ b/espmusicmouse/lib/ledtl/helpers/BellCurve.h
@@ -16,4 +16,20 @@ static inline float bellCurveApproximation(float x, float inverseWidth)
   const auto res = 1.0f + 0.27606958941084f * x3 - 0.80213917882168f * x2;
 
   return res < 0.0f ? 0.0f : res;
+}
+
+// Function start at 0 (x=0) and goes smoothly up to 1 and arrives 1 at x=width
+// inverse width has to be 1 / width (should be cached outside)
+static inline float stepFunction(float x, float width, float inverseWidth)
+{
+  if (x < 0.0f)
+    return 0.0f;
+  if (x >= width)
+    return 1.0f;
+
+  auto bellInvWidth = inverseWidth * 0.5f;
+  auto nx = (-x + width) * bellInvWidth * 4;
+  auto x2 = nx * nx;
+  auto x3 = x2 * nx;
+  return 1 + 0.2760695894 * x3 - 0.8021391 * x2;
 }
\ No newline at end of file
diff --git a/espmusicmouse/src/Messages.h b/espmusicmouse/src/Messages.h
index b2aef9f..6987427 100644
--- a/espmusicmouse/src/Messages.h
+++ b/espmusicmouse/src/Messages.h
@@ -1,6 +1,7 @@
 #include "effects/Circular.h"
 #include "effects/Static.h"
 #include "effects/AlexaSwipe.h"
+#include "effects/ReverseSwipe.h"
 #include "effects/RandomTwoColorInterpolation.h"
 #include "effects/SwipeAndChange.h"
 
@@ -101,10 +102,12 @@ enum class MessageHostToFw : uint8_t
   LED_WHEEL_EFFECT_CIRCULAR = 2,
   LED_WHEEL_EFFECT_RANDOM_TWO_COLOR_INTERPOLATION = 3,
   LED_WHEEL_EFFECT_SWIPE_AND_CHANGE = 4,
-  MOUSE_LED_EFFECT_STATIC = 5,
-  MOUSE_LED_EFFECT_CIRCULAR = 6,
-  MOUSE_LED_EFFECT_RANDOM_TWO_COLOR_INTERPOLATION = 7,
-  
+  LED_WHEEL_EFFECT_REVERSE_SWIPE = 5,
+  MOUSE_LED_EFFECT_STATIC = 6,
+  MOUSE_LED_EFFECT_CIRCULAR = 7,
+  MOUSE_LED_EFFECT_RANDOM_TWO_COLOR_INTERPOLATION = 8,
+  MOUSE_LED_EFFECT_SWIPE_AND_CHANGE = 9,
+  MOUSE_LED_EFFECT_REVERSE_SWIPE = 10,
 };
 
 template <>
@@ -201,6 +204,12 @@ inline void handleIncomingMessagesFromHost(LedTask1 *ledTaskCircle, LedTask2 *le
       auto cfg = reinterpret_cast<EffectSwipeAndChangeConfig *>(msgBuffer);
       ledTaskCircle->startEffect(*cfg);
     }
+    else if (msgType == MessageHostToFw::LED_WHEEL_EFFECT_REVERSE_SWIPE)
+    {
+      auto cfg = reinterpret_cast<EffectReverseSwipeConfig *>(msgBuffer);
+      ledTaskCircle->startEffect(*cfg);
+    }
+    //
     else if (msgType == MessageHostToFw::MOUSE_LED_EFFECT_STATIC)
     {
       auto cfg = reinterpret_cast<EffectStaticConfig *>(msgBuffer);
@@ -216,6 +225,16 @@ inline void handleIncomingMessagesFromHost(LedTask1 *ledTaskCircle, LedTask2 *le
       auto cfg = reinterpret_cast<EffectRandomTwoColorInterpolationConfig *>(msgBuffer);
       ledTaskMouse->startEffect(*cfg);
     }
+    else if (msgType == MessageHostToFw::MOUSE_LED_EFFECT_SWIPE_AND_CHANGE)
+    {
+      auto cfg = reinterpret_cast<EffectSwipeAndChangeConfig *>(msgBuffer);
+      ledTaskMouse->startEffect(*cfg);
+    }
+    else if (msgType == MessageHostToFw::MOUSE_LED_EFFECT_REVERSE_SWIPE)
+    {
+      auto cfg = reinterpret_cast<EffectReverseSwipeConfig *>(msgBuffer);
+      ledTaskMouse->startEffect(*cfg);
+    }
     else
       Serial.println("Unknown message type");
   }
diff --git a/espmusicmouse/src/TaskLed.h b/espmusicmouse/src/TaskLed.h
index b78b499..2bd1c5d 100644
--- a/espmusicmouse/src/TaskLed.h
+++ b/espmusicmouse/src/TaskLed.h
@@ -80,6 +80,7 @@ void _led_task_func(void *params)
       else if (dispatchEffectId<EffectId::ALEXA_SWIPE                   >(id, effectFunction, ledStrip, msgBuffer, effectStorage)) {}
       else if (dispatchEffectId<EffectId::RANDOM_TWO_COLOR_INTERPOLATION>(id, effectFunction, ledStrip, msgBuffer, effectStorage)) {}
       else if (dispatchEffectId<EffectId::SWIPE_AND_CHANGE              >(id, effectFunction, ledStrip, msgBuffer, effectStorage)) {}
+      else if (dispatchEffectId<EffectId::REVERSE_SWIPE                 >(id, effectFunction, ledStrip, msgBuffer, effectStorage)) {}
       // clang-format on
 
       timeoutMsForEffect = 0;
diff --git a/espmusicmouse/src/host_test.cpp b/espmusicmouse/src/host_test.cpp
index a6d3b28..6c45286 100644
--- a/espmusicmouse/src/host_test.cpp
+++ b/espmusicmouse/src/host_test.cpp
@@ -2,25 +2,105 @@
 #include "containers/LedStripRGBW.h"
 
 #include "effects/AlexaSwipe.h"
+#include "effects/ReverseSwipe.h"
+#include "helpers/ColorConversions.h"
 
 #include <iostream>
 #include <vector>
+#include <fstream>
 
 template <typename T>
-void printVec(const std::vector<T> &vec)
+std::ostream &operator<<(std::ostream &os, const std::vector<T> &vec)
 {
-  std::cout << "[";
+  os << "[";
   for (const auto &e : vec)
-    std::cout << e << ",";
-  std::cout << "]\n";
+  {
+    if (std::is_same<uint8_t, T>::value)
+      os << int(e) << ",";
+    else
+      os << e << ",";
+  }
+  os << "]";
+  return os;
+}
+
+template <typename T>
+std::ostream &operator<<(std::ostream &os, const std::vector<std::vector<T>> &vec)
+{
+  os << "[";
+  for (const auto &e : vec)
+    os << e << ",";
+  os << "]";
+  return os;
+}
+
+template <typename TEffect, int NLeds>
+void effectToFile(const std::string &filename, TEffect &effect, LedStripRGBW<NLeds> &strip, int calls = 100)
+{
+  std::vector<std::vector<uint8_t>> vr(calls);
+  std::vector<std::vector<uint8_t>> vg(calls);
+  std::vector<std::vector<uint8_t>> vb(calls);
+
+  std::vector<std::vector<float>> vh(calls);
+  std::vector<std::vector<float>> vs(calls);
+  std::vector<std::vector<float>> vv(calls);
+
+  for (int time = 0; time < calls; ++time)
+  {
+    effect();
+    vr[time].resize(NLeds);
+    vg[time].resize(NLeds);
+    vb[time].resize(NLeds);
+
+    vh[time].resize(NLeds);
+    vs[time].resize(NLeds);
+    vv[time].resize(NLeds);
+
+    for (int i = 0; i < NLeds; ++i)
+    {
+      uint8_t r, g, b, w;
+      strip.getRGBW(i, r, g, b, w);
+      vr[time][i] = r;
+      vg[time][i] = g;
+      vb[time][i] = b;
+
+      auto hsv = rgb2hsv(ColorRGBW{r, g, b, w});
+      vh[time][i] = hsv.h;
+      vs[time][i] = hsv.s;
+      vv[time][i] = hsv.v;
+    }
+  }
+
+  std::ofstream fs(filename.c_str());
+  fs << "r = " << vr << "\n";
+  fs << "g = " << vg << "\n";
+  fs << "b = " << vb << "\n";
+  fs << "h = " << vh << "\n";
+  fs << "s = " << vs << "\n";
+  fs << "v = " << vv << "\n";
 }
 
 int main(int argc, char **argv)
 {
-  auto cfg = EffectAlexaSwipeConfig{20, 20, 90, 5, 180, ColorRGBW{255, 0, 0, 0}, ColorRGBW{0, 0, 255, 0}};
-  LedStripRGBW<51> strip;
+  {
+    auto cfg = EffectAlexaSwipeConfig{20.f, 20.f, 90.f, 5.f, 180, true, ColorRGBW{255, 0, 0, 0}, ColorRGBW{255, 0, 0, 0}};
+    LedStripRGBW<51> strip;
 
-  EffectAlexaSwipe<decltype(strip)> effect(cfg, strip);
+    EffectAlexaSwipe<decltype(strip)> effect(cfg, strip);
+    effectToFile("swipe.py", effect, strip, 200);
+  }
+
+  {
+    auto cfg = EffectReverseSwipeConfig{360.f, 5.f, 180};
+    LedStripRGBW<51> strip;
+    for (int i = 0; i < strip.numLeds(); ++i)
+      setLedRGBW(strip, i, ColorRGBW{255, 255, 255, 0});
+
+    EffectReverseSwipe<decltype(strip)> effect(cfg, strip);
+    effectToFile("reverse_swipe.py", effect, strip, 200);
+  }
+
+  /*
   effect.currentPosition_ = 150;
 
   const auto numLeds = strip.numLeds() / 2;
@@ -35,6 +115,6 @@ int main(int argc, char **argv)
   printVec(interpolation);
 
   effect();
-
+  */
   return 0;
 }
\ No newline at end of file