diff --git a/include/effect_sines.h b/include/effect_sines.h
new file mode 100644
index 0000000..12e7bc0
--- /dev/null
+++ b/include/effect_sines.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include "prototypes.h"
+#include "functions.h"
+#include "Effect.h"
+
+class SinesEffectSinus {
+private:
+	uint8_t _value;
+	uint8_t _frequency;
+	uint8_t _amplitude;
+	uint8_t _x;
+	uint8_t _step;
+	Window* _window;
+	CRGB _color;
+public:
+	SinesEffectSinus(Window* w);
+	void loop();
+};
+
+class SinesEffect : public Effect {
+private:
+	SinesEffectSinus* _sinus[EFFECT_SINES_COUNT];
+	uint8_t _step = 0;
+public:
+	SinesEffect();
+	~SinesEffect();
+    boolean supports_window = true;
+    boolean can_be_shown_with_clock();
+    void loop();
+};
+
diff --git a/src/effect_sines.cpp b/src/effect_sines.cpp
new file mode 100644
index 0000000..69d145c
--- /dev/null
+++ b/src/effect_sines.cpp
@@ -0,0 +1,48 @@
+#include "effect_sines.h"
+
+SinesEffectSinus::SinesEffectSinus(Window* w) {
+	_window = w;
+	_frequency = random8(40)+8;
+	_amplitude = random(5)+2;
+	_x = random8(_window->width);
+	_step = 0;
+	_color = CHSV(random8(), 255, 255);
+}
+
+void SinesEffectSinus::loop() {
+	_value += _frequency;
+	if ((_value == 0 || _value==128) && random8(16)==0) {
+		int8_t sign = _value == 0 ? -1 : +1;
+		if (_x > 200) sign = -1;
+		else if (_x >= _window->width) sign = 1;
+		_amplitude = random(3)+2;
+		_frequency = random8(40)+8;
+		_color = CHSV(random8(), 255, 255);
+		_x = _x - sign*_amplitude;
+	}
+	uint8_t x = _x + ((sin8(_value) - 128) * _amplitude / 128);
+	_window->setPixel(x, 0, &_color);
+}
+
+SinesEffect::SinesEffect() {
+	for (int i=0; i<EFFECT_SINES_COUNT; i++) {
+		_sinus[i] = new SinesEffectSinus(window);
+	}
+}
+
+SinesEffect::~SinesEffect() {
+	for (int i=0; i<EFFECT_SINES_COUNT; i++) { delete _sinus[i]; }
+}
+
+boolean SinesEffect::can_be_shown_with_clock() {
+	return true;
+}
+
+void SinesEffect::loop() {
+	// do stuff
+	if (_step++ % 4) return; // Skip 3 out of 4 steps.
+	window->shift_down_and_blur();
+	for (int i=0; i<EFFECT_SINES_COUNT; i++) {
+		_sinus[i]->loop();
+	}
+}