diff --git a/s154/s154.pyde b/s154/s154.pyde
index e307f021..7260f16e 100644
--- a/s154/s154.pyde
+++ b/s154/s154.pyde
@@ -17,8 +17,8 @@ def draw():
     n_max, n_min = 0.5, 0.5
     for x in range(cols):
         for y in range(cols):
-            n = noise((mouseX + x) * perlinScale,
-                      (mouseY + y) * perlinScale,
+            n = noise((mx + x) * perlinScale,
+                      (my + y) * perlinScale,
                       z * perlinScale)
             if n > n_max:
                 n_max = n
@@ -38,5 +38,5 @@ def draw():
     my += 1
     z += 1           
     
-    if frameCount <= 50: saveFrame(OUTPUT)
+    #if frameCount <= 50: saveFrame(OUTPUT)
     # Gif exporter lib did not work well for the colours! :(
diff --git a/s155/.gif b/s155/.gif
new file mode 100644
index 00000000..9d9c4b0b
Binary files /dev/null and b/s155/.gif differ
diff --git a/s155/gif_export_wrapper.py b/s155/gif_export_wrapper.py
new file mode 100644
index 00000000..ed24d706
--- /dev/null
+++ b/s155/gif_export_wrapper.py
@@ -0,0 +1,44 @@
+"""
+Alexandre B A Villares http://abav.lugaralgum.com - GPL v3 
+
+A helper for the Processing gifAnimation library (https://github.com/jordanorelli)
+ported to Processing 3 by 01010101 (https://github.com/01010101)
+Download the library from https://github.com/01010101/GifAnimation/archive/master.zip
+This helper was inspired by an example by Art Simon https://github.com/APCSPrinciples/AnimatedGIF/
+
+Put  at the start of your sketch:
+   add_library('gifAnimation')
+   from gif_exporter import gif_export
+and at the end of draw():
+    gif_export(GifMaker)
+"""
+
+def gif_export(GifMaker,             # gets a reference to the library
+               filename="exported",  # .gif will be added
+               repeat=0,             # 0 makes it an "endless" animation
+               quality=48,          # quality range 0 - 255
+               delay=170,            # this is quick
+               frames=0):            # 0 will stop on keyPressed or frameCount >= 100000
+    global gifExporter
+    try:
+        gifExporter
+    except NameError:
+        gifExporter = GifMaker(this, filename + ".gif")
+        gifExporter.setRepeat(repeat)
+        gifExporter.setQuality(quality)
+        gifExporter.setDelay(delay)
+        gif_export._frame = frameCount
+        print("gif start")
+
+    gifExporter.addFrame()
+
+    if (frames == 0 and keyPressed or frameCount - gif_export._frame >= 100000) \
+            or (frames != 0 and frameCount - gif_export._frame >= frames):
+        gifExporter.finish()
+        #background(255)
+        print("gif saved")
+        del(gifExporter)
+        noLoop()
+        return False
+    else:
+        return True
diff --git a/s155/s155.gif b/s155/s155.gif
new file mode 100644
index 00000000..0453f0c9
Binary files /dev/null and b/s155/s155.gif differ
diff --git a/s155/s155.pyde b/s155/s155.pyde
new file mode 100644
index 00000000..e307f021
--- /dev/null
+++ b/s155/s155.pyde
@@ -0,0 +1,42 @@
+# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
+SKETCH_NAME, OUTPUT = "s154", "###.png"  # 180603
+
+perlinScale = 0.1
+mx, my, z = 0, 0, 0
+
+def setup():
+    size(500, 500)  # define o tamanho da tela em pixels. Largura X Altura
+    noStroke()
+    colorMode(HSB)
+
+def draw():
+    global mx, my, z
+    background(0)
+    cols = 50
+    tam = width / cols
+    n_max, n_min = 0.5, 0.5
+    for x in range(cols):
+        for y in range(cols):
+            n = noise((mouseX + x) * perlinScale,
+                      (mouseY + y) * perlinScale,
+                      z * perlinScale)
+            if n > n_max:
+                n_max = n
+            if n < n_min:
+                n_min = n
+
+    for x in range(cols):
+        for y in range(cols):
+            n = noise((mx + x) * perlinScale,
+                      (my + y) * perlinScale,
+                      z * perlinScale)
+            nn = map(n, n_min, n_max, 0, 255)
+            fill(nn, 255, 255)
+            ellipse(tam / 2 + x * tam, tam / 2 + y * tam,
+                    tam - 1, tam - 1)
+    mx += 1
+    my += 1
+    z += 1           
+    
+    if frameCount <= 50: saveFrame(OUTPUT)
+    # Gif exporter lib did not work well for the colours! :(