diff --git a/src/effect_dynamic.cpp b/src/effect_dynamic.cpp
index 4e4b716..780a29a 100644
--- a/src/effect_dynamic.cpp
+++ b/src/effect_dynamic.cpp
@@ -34,3 +34,28 @@ void MultiDynamicEffect::loop() {
     }
     this->draw();
 }
+
+BigDynamicEffect::~BigDynamicEffect() {
+    delete window;
+}
+
+void BigDynamicEffect::loop() {
+	EVERY_N_MILLISECONDS( EFFECT_BIG_DYNAMIC_LOOP_TIME ) {
+		uint8_t x = random8(0, window->width - EFFECT_BIG_DYNAMIC_SIZE + 1);
+		uint8_t y = random8(0, window->height - EFFECT_BIG_DYNAMIC_SIZE + 1);
+		CRGB color = CHSV(random8(), 255, 255);
+        CRGB black(0x000000);
+
+		for (uint8_t ix=0; ix<EFFECT_BIG_DYNAMIC_SIZE; ix++) for (uint8_t iy=0; iy<EFFECT_BIG_DYNAMIC_SIZE; iy++) {
+			window->setPixel(x+ix, y+iy, &color);
+		}
+        /*for (uint8_t ix=0; ix<EFFECT_BIG_DYNAMIC_SIZE+2; ix++) {
+            window->setPixel(x-1+ix, y-1, &black);
+            window->setPixel(x-1+ix, y+EFFECT_BIG_DYNAMIC_SIZE+1, &black);
+        }
+        for (uint8_t iy=0; iy<EFFECT_BIG_DYNAMIC_SIZE+2; iy++) {
+            window->setPixel(x-1, y-1+iy, &black);
+            window->setPixel(x+EFFECT_BIG_DYNAMIC_SIZE+1, y-1+iy, &black);
+        }*/
+	}
+}