diff --git a/.gitignore b/.gitignore
index bb5d7c19..af81b0d2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 .DS_Store
 *.tga
 *.class
+*.properties
diff --git a/s141_s142_s143/gif_exporter.py b/s141_s142_s143/gif_exporter.py
new file mode 100644
index 00000000..7b8283f2
--- /dev/null
+++ b/s141_s142_s143/gif_exporter.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")
+        noLoop()        
+        del(gifExporter)
+        return False
+    else:
+        return True
diff --git a/s141_s142_s143/s140_s141_s142.png b/s141_s142_s143/s140_s141_s142.png
new file mode 100644
index 00000000..93333e70
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diff --git a/s141_s142_s143/s141_s142_s143.pyde b/s141_s142_s143/s141_s142_s143.pyde
new file mode 100644
index 00000000..ad5f7fca
--- /dev/null
+++ b/s141_s142_s143/s141_s142_s143.pyde
@@ -0,0 +1,70 @@
+# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
+SKETCH_NAME = "s140_s141_s142"  # 180522 Revisitig ideas from sketch s071 180312
+
+# add_library('gifAnimation')
+# from gif_exporter import *
+
+
+def setup():
+    print_text_for_readme(SKETCH_NAME)
+    size(1750, 700)
+    noFill()
+
+def draw():
+    background(200)
+    grid = 4
+    border = 0
+    space = (height - border * 2) / grid
+    for x in range(grid):
+        for y in range(grid):
+            px = border + space / 2 + x * space
+            py = border + space / 2 + y * space
+            poly_shape(px, py, TWO_PI / (3 + y), rnd=3-x, gen=4, scaling=0)
+    translate(525,0)
+    for x in range(1, grid):
+        for y in range(grid):
+            px = border + space / 2 + x * space
+            py = border + space / 2 + y * space
+            poly_shape(px, py, TWO_PI / (3 + y), rnd=0, gen=4, scaling=x)
+    translate(525,0)
+    for x in range(1, grid):
+        for y in range(grid):
+            px = border + space / 2 + x * space
+            py = border + space / 2 + y * space
+            poly_shape(px, py, TWO_PI / (3 + y), rnd=x, gen=4, scaling=3)
+
+    #gif_export(GifMaker, frames=10, filename=SKETCH_NAME)
+    saveFrame(SKETCH_NAME+".png")
+    noLoop()
+
+def poly_shape(x, y, angle, rnd=0, gen=4, scaling=0):
+    with pushMatrix():
+        translate(x, y)
+        radius = map(scaling, 0, 3, gen * 8, gen ** 2 * 2.7) #+ random(-rnd, rnd)
+        ps = createShape()  # to create a polygon on a ps PShape object
+        ps.beginShape()
+        a = 0
+        while a < TWO_PI:
+            sx = cos(a) * radius
+            sy = sin(a) * radius
+            ps.vertex(sx + random(-rnd, rnd), sy + random(-rnd, rnd))
+            a += angle
+        ps.endShape(CLOSE)  # end of PShape creation
+        shape(ps, 0, 0)  # Draw the PShape
+        if gen > 1:  # if the recursion 'distance'/'depth' allows...
+            for i in range(ps.getVertexCount()):
+                # for each vertex
+                pv = ps.getVertex(i)  # gets vertex as a PVector
+                # recusively call poly_shape with a smaller D
+                poly_shape(pv.x, pv.y, angle, rnd, gen - 1, scaling)
+
+def keyPressed():
+    loop()
+
+def print_text_for_readme(name):
+    println("""
+![{0}]({0}/{0}.png)
+
+{1}: [code](https://github.com/villares/sketch-a-day/tree/master/{0})  [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
+""".format(name, name[1:])
+    )
diff --git a/s141_s142_s143/s14X.png b/s141_s142_s143/s14X.png
new file mode 100644
index 00000000..c1373dd7
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