diff --git a/include/effect_matrix.h b/include/effect_matrix.h
index 9105525..8b75c30 100644
--- a/include/effect_matrix.h
+++ b/include/effect_matrix.h
@@ -9,7 +9,7 @@
 class MatrixEffectColumn {
 protected:
     Window* window;
-    accum88 x, y;
+    saccum78 x, y;
     uint8_t length = 1;
     uint8_t _direction = 2;
     bool _random_direction = false;
diff --git a/include/effect_tv_static.h b/include/effect_tv_static.h
new file mode 100644
index 0000000..eff81e9
--- /dev/null
+++ b/include/effect_tv_static.h
@@ -0,0 +1,12 @@
+#pragma once
+#include "Effect.h"
+
+class TvStaticEffect : public Effect {
+private:
+	Window* _window = new Window(0, 0, LED_WIDTH, LED_HEIGHT-6);
+public:
+	~TvStaticEffect();
+	void loop(uint16_t ms) override;
+	bool can_be_shown_with_clock() override;
+	String get_name() override { return "tv_static"; }
+};
diff --git a/include/settings.h b/include/settings.h
index e2e4c64..1bfdf46 100644
--- a/include/settings.h
+++ b/include/settings.h
@@ -22,57 +22,61 @@ struct Settings {
 			uint16_t time = 300;
 			uint16_t random = 1;
 		} cycle ;
-		
+
 		struct /* matrix */ {
 			uint16_t length_min = 4;
 			uint16_t length_max = 20;
-			uint16_t speed_min = 1;
-			uint16_t speed_max = 10;
+			uint16_t speed_min = 3;
+			uint16_t speed_max = 7;
 		} matrix;
-		
+
 		struct /* confetti */ {
 			uint16_t pixels_per_loop = 2;
 		} confetti;
-		
+
 		struct /* dvd */ {
 			uint16_t width = 3;
 			uint16_t height = 2;
 			uint16_t speed = 50;
 		} dvd;
-		
+
 		struct /* dynamic */ {
 			uint16_t single_loop_time = 40;
 			uint16_t multi_loop_time = 1400;
 			uint16_t big_loop_time = 50;
 			uint16_t big_size = 3;
 		} dynamic;
-		
+
 		struct /* fire */ {
 			uint16_t cooldown = 192;
 			uint16_t spark_chance = 5;
 		} fire;
-		
+
 		struct /* firework */ {
 			uint16_t drag = 255;
 			uint16_t bounce = 200;
 			uint16_t gravity = 10;
 			uint16_t sparks = 12;
 		} firework;
-		
+
 		struct /* gol */ {
 			uint16_t start_percentage = 90;
 			uint16_t blend_speed = 10;
 			uint16_t restart_after_steps = 100;
 		} gol;
-		
+
 		struct /* sines */ {
 			uint16_t count = 5;
 		} sines;
-		
+
 		struct /* snake */ {
 			uint16_t direction_change = 5;
 			uint16_t slowdown = 2;
 		} snake;
+		
+		struct /* tv_static */ {
+			uint16_t black_bar_speed = 3500;
+		} tv_static;
 	} effects;
 };
 
diff --git a/platformio.ini b/platformio.ini
index cf3a20a..ed69f8b 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -21,7 +21,7 @@ lib_deps =
 	ESPAsyncTCP
 
 [env:ota]
-upload_port = 10.10.2.78
+upload_port = 10.10.2.80
 upload_protocol = espota
 platform = espressif8266
 board = esp07
diff --git a/src/effect_big_clock.cpp b/src/effect_big_clock.cpp
index 854cb36..dc5e9b6 100644
--- a/src/effect_big_clock.cpp
+++ b/src/effect_big_clock.cpp
@@ -27,17 +27,10 @@ void BigClockEffect::_draw_seconds() {
 	for (int i=1; i<=seconds; i++) {
 		_draw_border_pixel(i, 0, (i%5==0) ? &_color_seconds_light : &_color_seconds_dark);
 	}
-	
+
 	uint16_t millis = ntpClient.getEpochMillis() % 1000;
-	/*
-	// Enable this to have the next pixel move smoothly to its position
-	if (millis > 0) {
-		uint8_t part = 60 - ((60 - seconds) * millis / 1000);
-		_draw_border_pixel(part, &_color_seconds);
-	}
-	*/
-	uint8_t offset = 5 - ((millis % 1000) / 200);
-	uint8_t part = scale8(millis % 200, 200);
+	uint8_t offset = 5 - (millis / 200);
+	uint8_t part = 255 - ((millis % 200) * 256 / 200);
 	uint8_t number_to_show = (60 - seconds - offset) / 5 + 1;
 	for(uint8_t i = 0; i<number_to_show; i++) {
 		uint8_t pos = seconds + offset + i*5;
@@ -46,26 +39,6 @@ void BigClockEffect::_draw_seconds() {
 }
 
 void BigClockEffect::_draw_border_pixel(uint8_t i, uint8_t part, CRGB* color) {
-	/*uint8_t x, y;
-	if (i<=8) {
-		x = 7 + i;
-		y = 0;
-	} else if (i<=23) {
-		x = 15;
-		y = i - 8;
-	} else if (i<= 38) {
-		x = 15 - i + 23;
-		y = 15;
-	} else if (i <= 53) {
-		x = 0;
-		y = 15 - i + 38;
-	} else if (i <= 60) {
-		x = i - 53;
-		y = 0;
-	} else {
-		return;
-	}
-	window->setPixel(x, y, color);*/
 	accum88 x, y;
 	if (i<=8) {
 		x = ((7+i)<<8) + part;
diff --git a/src/effect_matrix.cpp b/src/effect_matrix.cpp
index 33f8ff4..476f8f5 100644
--- a/src/effect_matrix.cpp
+++ b/src/effect_matrix.cpp
@@ -47,7 +47,7 @@ void MatrixEffectColumn::advance(uint16_t ms) {
 	switch(_direction) {
 		case DIR_NORTH:
 			y-=speed * ms;
-			if ((y>>8) > window->height && (y>>8) + length > window->height) running=false;
+			if ((y>>8) + length < 0) running=false;
 			break;
 		case DIR_EAST:
 			x+=speed * ms;
@@ -59,7 +59,7 @@ void MatrixEffectColumn::advance(uint16_t ms) {
 			break;
 		case DIR_WEST:
 			x-=speed * ms;
-			if ((x>>8) > window->width && (y>>8) + length > window->width) running=false;
+			if ((x>>8) + length < 0) running=false;
 			break;
 	}
 }
diff --git a/src/effect_tv_static.cpp b/src/effect_tv_static.cpp
new file mode 100644
index 0000000..f0bd56c
--- /dev/null
+++ b/src/effect_tv_static.cpp
@@ -0,0 +1,27 @@
+#include "effect_tv_static.h"
+
+void TvStaticEffect::loop(uint16_t ms) {
+	uint8_t dark_position = (millis() % settings.effects.tv_static.black_bar_speed) * _window->width / settings.effects.tv_static.black_bar_speed;
+	for (uint8_t y=0; y<_window->height; y++) {
+		uint8_t row_dark_position = (dark_position + y/3) % _window->width;
+		for (uint8_t x=0; x<_window->width; x++) {
+			uint8_t brightness = random8();
+			uint8_t darkening = 0;
+			uint8_t distance = x - row_dark_position;
+			if (distance == 0) darkening = random8(192, 255);
+			else if (distance == 1) darkening = random8(128, 255);
+			else if (distance == 2) darkening = random8(92, 192);
+			else if (distance == 3) darkening = random8(32, 128);
+			if (darkening > brightness) brightness = 0;
+			else brightness -= darkening;
+			CRGB color(brightness, brightness, brightness);
+			_window->setPixel(x, y, &color);
+		}
+	}
+}
+
+bool TvStaticEffect::can_be_shown_with_clock() { return true; }
+
+TvStaticEffect::~TvStaticEffect() {
+	delete _window;
+}
diff --git a/src/effects.cpp b/src/effects.cpp
index bc3edf0..45b22d9 100644
--- a/src/effects.cpp
+++ b/src/effects.cpp
@@ -22,6 +22,7 @@
 #include "effect_sines.h"
 #include "effect_marquee.h"
 #include "effect_blur2d.h"
+#include "effect_tv_static.h"
 
 Effect* current_effect;
 
@@ -52,9 +53,10 @@ const EffectEntry effects[] = {
 	/* 21 */ {"sines",             true,  [](){ return new SinesEffect(); }},
 	/* 22 */ {"blur2d",            true,  [](){ return new Blur2DEffect(); }},
 	/* 23 */ {"marquee",           0,     [](){ return new MarqueeEffect(); }},
-	/* 24 */ {"night_clock",       false, [](){ return new NightClockEffect(); }}
+	/* 24 */ {"night_clock",       false, [](){ return new NightClockEffect(); }},
+	/* 25 */ {"tv_static",         false, [](){ return new TvStaticEffect(); }},
 };
-const uint8_t effects_size = 25;
+const uint8_t effects_size = 26;
 
 
 Effect* select_effect(const char* name) {
diff --git a/src/http_server.cpp b/src/http_server.cpp
index 20c90ab..e48fbd2 100644
--- a/src/http_server.cpp
+++ b/src/http_server.cpp
@@ -18,9 +18,9 @@ File upload_file;
 
 void http_server_handle_file_upload() {
 	if (http_server.uri() != "/upload") return;
-	
+
 	HTTPUpload upload = http_server.upload();
-	
+
 	if (upload.status == UPLOAD_FILE_START) {
 		String filename = upload.filename;
 		if (!filename.startsWith("/")) filename = "/" + filename;
@@ -42,7 +42,7 @@ void http_server_setup() {
 	PGM_P text_plain = PSTR("text/plain");
 	http_server.on("/", HTTP_GET, [&](){
 		LOGln("HTTP * GET /");
-		String message = "<html><head><title>Pitrix</title></head><body><h1>Pitrix</h1><a href='/settings'>Settings</a><p>Known animations:</p>";
+		String message = "<html><head><title>Pitrix</title></head><body><h1>Pitrix</h1><p><a href='/settings'>Settings</a></p><p><a href='/effects'>Effect</a></p><p>Known animations:</p>";
 		if (!SPIFFS.begin()) {
 			message += "<strong>No SPIFFS file system found.</strong>";
 		} else {
@@ -116,7 +116,7 @@ void http_server_setup() {
 		}
 		String name = http_server.arg("key");
 		uint16_t value = http_server.arg("value").toInt();
-		
+
 		if (change_setting(name.c_str(), value)) {
 			if (http_server.hasArg("redir")) {
 				http_server.sendHeader("Location", "/settings");
@@ -150,6 +150,16 @@ void http_server_setup() {
 		}
 		http_server.send(500, "text/plain", "Could not read settings.");
 	});
+	http_server.on("/effects", HTTP_GET, [&]() {
+		String message = "<html><head><title>Pitrix effects</title></head><body><h1>Pitrix settings</h1><a href='/'>Back to main page</a><table>";
+		for (int i=0; i<effects_size; i++) {
+			message += "<tr><td>";
+			message += effects[i].name;
+			message += "</td></tr>";
+		}
+		message += "</table></body></html>";
+		http_server.send(200, "text/html", message);
+	});
 	http_server.on("/delete", HTTP_GET, [&]() {
 		LOGln("HTTP * GET /delete");
 		if (http_server.args()==0) {
@@ -216,7 +226,7 @@ void http_server_setup() {
 		}
 	});
 	http_server.begin();
-	
+
 	MDNS.addService("_http", "_tcp", 80);
 }
 
diff --git a/src/settings.cpp b/src/settings.cpp
index 287ca07..2c0dc24 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -6,44 +6,46 @@ Settings settings;
 
 Setting all_settings[] = {
 	{"fps", &settings.fps, TYPE_UINT8},
-	
+
 	{"effects.confetti.pixels_per_loop", &settings.effects.confetti.pixels_per_loop, TYPE_UINT8},
-	
+
 	{"effects.cycle.random", &settings.effects.cycle.random, TYPE_BOOL},
 	{"effects.cycle.time", &settings.effects.cycle.time, TYPE_UINT16},
-	
+
 	{"effects.dvd.width", &settings.effects.dvd.width, TYPE_UINT8},
 	{"effects.dvd.height", &settings.effects.dvd.height, TYPE_UINT8},
 	{"effects.dvd.speed", &settings.effects.dvd.speed, TYPE_UINT8},
-	
+
 	{"effects.dynamic.single_loop_time", &settings.effects.dynamic.single_loop_time, TYPE_UINT16},
 	{"effects.dynamic.multi_loop_time", &settings.effects.dynamic.multi_loop_time, TYPE_UINT16},
 	{"effects.dynamic.big_loop_time", &settings.effects.dynamic.big_loop_time, TYPE_UINT16},
 	{"effects.dynamic.big_size", &settings.effects.dynamic.big_size, TYPE_UINT8},
-	
+
 	{"effects.fire.cooldown", &settings.effects.fire.cooldown, TYPE_UINT8},
 	{"effects.fire.spark_chance", &settings.effects.fire.spark_chance, TYPE_UINT8},
-	
+
 	{"effects.firework.drag", &settings.effects.firework.drag, TYPE_UINT8},
 	{"effects.firework.bounce", &settings.effects.firework.bounce, TYPE_UINT8},
 	{"effects.firework.gravity", &settings.effects.firework.gravity, TYPE_UINT8},
 	{"effects.firework.sparks", &settings.effects.firework.sparks, TYPE_UINT8},
-	
+
 	{"effects.gol.start_percentage", &settings.effects.gol.start_percentage, TYPE_UINT8},
 	{"effects.gol.blend_speed", &settings.effects.gol.blend_speed, TYPE_UINT8},
 	{"effects.gol.restart_after_steps", &settings.effects.gol.restart_after_steps, TYPE_UINT8},
-	
+
 	{"effects.matrix.length_min", &settings.effects.matrix.length_min, TYPE_UINT8},
 	{"effects.matrix.length_max", &settings.effects.matrix.length_max, TYPE_UINT8},
 	{"effects.matrix.speed_min", &settings.effects.matrix.speed_min, TYPE_UINT8},
 	{"effects.matrix.speed_max", &settings.effects.matrix.speed_max, TYPE_UINT8},
-	
+
 	{"effects.sines.count", &settings.effects.sines.count, TYPE_UINT8},
+
+	{"effects.snake.direction_change", &settings.effects.snake.direction_change, TYPE_UINT8},
 	
-	{"effects.snake.direction_change", &settings.effects.snake.direction_change, TYPE_UINT8}
+	{"effects.tv_static.black_bar_speed", &settings.effects.tv_static.black_bar_speed, TYPE_UINT16},
 };
 
-const uint8_t all_settings_size = 25;
+const uint8_t all_settings_size = 26;
 
 bool change_setting(const char* key, uint16_t new_value) {
 	LOGln("Settings * Setting %s to new value %d.", key, new_value);
@@ -58,7 +60,7 @@ bool change_setting(const char* key, uint16_t new_value) {
 		LOGln("Settings * No setting matching the name %s found.", key);
 		return false;
 	}
-	
+
 	// Check data size
 	if (s->type == TYPE_BOOL && new_value > 1) {
 		LOGln("Settings * Data type of %s is boolean, but new value is > 1.", key);
@@ -68,7 +70,7 @@ bool change_setting(const char* key, uint16_t new_value) {
 		LOGln("Settings * Data type of %s is uint8_t, but new value is > 0xFF.", key);
 		return false;
 	}
-	
+
 	*(s->value) = new_value;
 	return true;
 }