diff --git a/s285/node.py b/s285/node.py
new file mode 100644
index 00000000..002ce5a0
--- /dev/null
+++ b/s285/node.py
@@ -0,0 +1,24 @@
+from random import choice
+
+class Node():
+    nodes = []
+ 
+    def __init__(self, x, y):
+        self.x = Node.border + Node.spacing / 2 + x * Node.spacing - width / 2
+        self.y = Node.border + Node.spacing / 2 + y * Node.spacing - height / 2
+        self.size_ = 1
+        self.cor = color(0, 0, 200)
+        self.rot = choice((0, HALF_PI, PI, PI + HALF_PI))
+        
+    def plot(self, ang):
+        """ draws node """
+        with pushMatrix():
+            translate(self.x, self.y)
+            rotate(self.rot + ang)
+            noFill() #stroke(0)
+            stroke(self.cor)
+            siz = Node.spacing * self.size_
+            rect(0, 0, siz, siz)
+            line(-siz/2, -siz/2, siz/2, siz/2)
+
+            
diff --git a/s285/s285.gif b/s285/s285.gif
new file mode 100644
index 00000000..0eecc142
Binary files /dev/null and b/s285/s285.gif differ
diff --git a/s285/s285.pyde b/s285/s285.pyde
new file mode 100644
index 00000000..dd0dc23e
--- /dev/null
+++ b/s285/s285.pyde
@@ -0,0 +1,72 @@
+# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
+SKETCH_NAME = "s284"  # 2018109
+OUTPUT = ".gif"
+GRID_SIZE = 10
+
+from random import seed
+from random import choice
+from random import randint
+
+from node import Node
+
+def setup():
+    global ang
+    ang = 0
+    size(500, 500, P2D)
+    strokeWeight(2)
+    rectMode(CENTER)
+    random_seed(101)
+    init_grid(GRID_SIZE)
+            
+def draw():
+    translate(width/2, height/2)
+    background(200)
+    
+    ang = frameCount/31.
+    
+    for node in Node.nodes:
+        node.plot(ang)
+    
+    if not frameCount % 12:
+        init_grid(GRID_SIZE)    
+                
+    if ang <= PI:
+        saveFrame("###.png")
+    else:
+        noLoop()
+                                            
+def init_grid(grid_size):
+    Node.border = 50
+    Node.spacing = (width - Node.border * 2) / grid_size
+    Node.nodes = []
+    for x in range(grid_size):
+        for y in range(grid_size):
+                new_node = Node(x, y)
+                Node.nodes.append(new_node)
+
+ 
+def keyPressed():
+    if key == "n":
+        init_grid(GRID_SIZE)
+    if key == "s": saveFrame("###.png")
+    
+    
+def random_seed(s=None):
+    global rnd_seed
+    if s:
+        rnd_seed = s
+        seed(rnd_seed)
+        randomSeed(rnd_seed)    
+    else:
+        seed(rnd_seed)
+        randomSeed(rnd_seed)
+    
+# print text to add to the project's README.md             
+def settings():
+    println(
+"""
+![{0}]({0}/{0}{2})
+
+{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(SKETCH_NAME, SKETCH_NAME[1:], OUTPUT)
+    )