diff --git a/src/App/AppEffects.h b/src/App/AppEffects.h
index daaeb75f..32d6f9dc 100644
--- a/src/App/AppEffects.h
+++ b/src/App/AppEffects.h
@@ -418,14 +418,12 @@ class Octopus2D: public Effect {
     uint8_t legs = mdl->getValue("Legs", leds.rowNr);
     CRGBPalette16 pal = getPalette(leds.rowNr);
 
-    leds.sharedData.allocate(sizeof(map_t) * leds.size.x * leds.size.y + 2 * sizeof(uint8_t) + 2 * sizeof(uint16_t) + sizeof(uint32_t));
-    map_t *rMap = leds.sharedData.bind<map_t>(leds.size.x * leds.size.y); //array
-    uint8_t *offsX = leds.sharedData.bind<uint8_t>();
-    uint8_t *offsY = leds.sharedData.bind<uint8_t>();
-    uint16_t *aux0 = leds.sharedData.bind<uint16_t>();
-    uint16_t *aux1 = leds.sharedData.bind<uint16_t>();
-    uint32_t *step = leds.sharedData.bind<uint32_t>();
-    if (!leds.sharedData.allocated()) return;
+    map_t    *rMap = leds.sharedData.bind(rMap, leds.size.x * leds.size.y); //array
+    uint8_t *offsX = leds.sharedData.bind(offsX);
+    uint8_t *offsY = leds.sharedData.bind(offsY);
+    uint16_t *aux0 = leds.sharedData.bind(aux0);
+    uint16_t *aux1 = leds.sharedData.bind(aux1);
+    uint32_t *step = leds.sharedData.bind(step);
 
     Coord3D pos = {0,0,0};
 
@@ -542,9 +540,7 @@ class BouncingBalls1D: public Effect {
     uint8_t numBalls = mdl->getValue("balls", leds.rowNr);
     CRGBPalette16 pal = getPalette(leds.rowNr);
 
-    leds.sharedData.allocate(sizeof(Ball) * maxNumBalls);
-    Ball *balls = leds.sharedData.bind<Ball>(maxNumBalls); //array
-    if (!leds.sharedData.allocated()) return;
+    Ball *balls = leds.sharedData.bind(balls, maxNumBalls); //array
 
     leds.fill_solid(CRGB::Black);
 
@@ -619,9 +615,7 @@ class RingRandomFlow:public RingEffect {
   }
 
   void loop(Leds &leds) {
-    leds.sharedData.allocate(sizeof(uint8_t) * leds.nrOfLeds);
-    uint8_t *hue = leds.sharedData.bind<uint8_t>(leds.nrOfLeds); //array
-    if (!leds.sharedData.allocated()) return;
+    uint8_t *hue = leds.sharedData.bind(hue, leds.nrOfLeds); //array
 
     hue[0] = random(0, 255);
     for (int r = 0; r < leds.nrOfLeds; r++) {
@@ -741,9 +735,7 @@ class PopCorn1D: public Effect {
     uint8_t intensity = mdl->getValue("intensity", leds.rowNr);
     bool useaudio = mdl->getValue("useaudio", leds.rowNr);
 
-    leds.sharedData.allocate(sizeof(Spark) * maxNumPopcorn);
-    Spark *popcorn = leds.sharedData.bind<Spark>(maxNumPopcorn); //array
-    if (!leds.sharedData.allocated()) return;
+    Spark *popcorn = leds.sharedData.bind(popcorn, maxNumPopcorn); //array
 
     float gravity = -0.0001 - (speed/200000.0); // m/s/s
     gravity *= leds.nrOfLeds;
@@ -818,10 +810,9 @@ class GEQEffect:public Effect {
   }
 
   void loop(Leds &leds) {
-    leds.sharedData.allocate(sizeof(uint16_t) * leds.size.x + sizeof(uint32_t));
-    uint16_t *previousBarHeight = leds.sharedData.bind<uint16_t>(leds.size.x); //array
-    uint32_t *step = leds.sharedData.bind<uint32_t>();
-    if (!leds.sharedData.allocated()) return;
+
+    uint16_t *previousBarHeight = leds.sharedData.bind(previousBarHeight, leds.size.x); //array
+    uint32_t *step = leds.sharedData.bind(step);
 
     const int NUM_BANDS = NUM_GEQ_CHANNELS ; // map(SEGMENT.custom1, 0, 255, 1, 16);
 
@@ -981,9 +972,8 @@ class FreqMatrix:public Effect {
   }
 
   void loop(Leds &leds) {
-    leds.sharedData.allocate(sizeof(uint8_t));
-    uint8_t *aux0 = leds.sharedData.bind<uint8_t>();
-    if (!leds.sharedData.allocated()) return;
+
+    uint8_t *aux0 = leds.sharedData.bind(aux0);
 
     uint8_t speed = mdl->getValue("speed", leds.rowNr);
     uint8_t fx = mdl->getValue("Sound effect", leds.rowNr);
@@ -1098,6 +1088,7 @@ class Effects {
   void loop(Leds &leds) {
     now = millis(); //tbd timebase
 
+    leds.sharedData.loop(); //sets the sharedData pointer back to 0 so loop effect can go through it
     effects[leds.fx%effects.size()]->loop(leds);
 
     #ifdef STARMOD_USERMOD_WLEDAUDIO
diff --git a/src/App/AppLeds.h b/src/App/AppLeds.h
index 9b9c8589..462103cf 100644
--- a/src/App/AppLeds.h
+++ b/src/App/AppLeds.h
@@ -41,8 +41,6 @@ class SharedData {
 
   public:
   SharedData() {
-    bytesAllocated = 1024; //initial size
-    data = (byte*) malloc(bytesAllocated); //start with 100 bytes
     USER_PRINTF("SharedData constructor %d %d\n", index, bytesAllocated);
   }
   ~SharedData() {
@@ -54,34 +52,28 @@ class SharedData {
     memset(data, 0, bytesAllocated);
   }
 
-  void allocate(size_t size) {
+  void loop() {
     index = 0;
-    if (size > bytesAllocated) {
-      USER_PRINTF("realloc %d %d %d\n", index, size, bytesAllocated);
-      data = (byte*)realloc(data, size);
-      bytesAllocated = size;
-    }
   }
 
   template <typename Type>
-  Type* bind(int length = 1) {
-    Type* returnValue = reinterpret_cast<Type*>(data + index);
-    index += length * sizeof(Type); //add consumed amount of bytes, index is next byte which will be pointed to
-    if (index > bytesAllocated) {
-      USER_PRINTF("bind too big %d %d\n", index, bytesAllocated);
-      return nullptr;
+  Type * bind(Type * returnValue, int length = 1) {
+    size_t newIndex = index + length * sizeof(Type);
+    if (newIndex > bytesAllocated) {
+      size_t newSize = bytesAllocated + (1 + ( newIndex - bytesAllocated)/1024) * 1024; // add a multitude of 1024 bytes
+      USER_PRINTF("bind add more %d->%d %d->%d\n", index, newIndex, bytesAllocated, newSize);
+      if (bytesAllocated == 0)
+        data = (byte*) malloc(newSize); //start bytesAllocated 100 bytes
+      else
+        data = (byte*)realloc(data, newSize);
+      bytesAllocated = newSize;
     }
+    // USER_PRINTF("bind %d->%d %d\n", index, newIndex, bytesAllocated);
+    returnValue = reinterpret_cast<Type *>(data + index);
+    index = newIndex; //add consumed amount of bytes, index is next byte which will be pointed to
     return returnValue;
   }
 
-  bool allocated() {
-    if (index>bytesAllocated) {
-      USER_PRINTF("not all variables bound %d %d\n", index, bytesAllocated);
-      return false;
-    }
-    return true;
-  }
-
 };