diff --git a/s177/s177.pyde b/s177/s177.pyde
new file mode 100644
index 00000000..9c446462
--- /dev/null
+++ b/s177/s177.pyde
@@ -0,0 +1,95 @@
+# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
+from random import choice
+from gif_export_wrapper import *
+add_library('gifAnimation')
+
+GRID_SIZE = 40
+SKETCH_NAME = "s177"
+OUTPUT = ".gif"
+
+def setup():
+    randomSeed(1)
+    size(700, 700)
+    colorMode(HSB)
+    strokeCap(PROJECT)
+    strokeWeight(12)
+    print_text_for_readme(SKETCH_NAME, OUTPUT)
+    border = 5
+    spacing = (width - border * 2) / GRID_SIZE
+    Node.spacing = spacing
+    for x in range(GRID_SIZE):
+        for y in range(GRID_SIZE):
+            Node.nodes.append(Node(border + spacing / 2 + x * spacing,
+                                   border + spacing / 2 + y * spacing))
+    for node in Node.nodes:
+        node.set_nbs()
+
+    Node.nodes[0].current = True
+
+def draw():
+
+    background(0)
+    for node in Node.nodes:
+        node.plot_links()
+        node.update()
+
+class Node():
+    nodes = []
+
+    def __init__(self, x, y):
+        self.x = x
+        self.y = y
+        self.visited = False
+        self.current = False
+        self.links = []
+        self.cor = 0
+
+    def plot_links(self):
+        for node in self.links:
+            stroke(color(self.cor % 256, 255, 255, 200))
+            line(node.x, node.y, self.x, self.y)
+
+    def set_nbs(self):
+        self.nbs, self.unvisited_nbs = [], []
+        for node in Node.nodes:
+            if node != self and dist(node.x, node.y,
+                                     self.x, self.y) <= Node.spacing:
+                self.nbs.append(node)
+                self.unvisited_nbs.append(node)
+
+    def set_unvisited_nbs(self):
+        self.unvisited_nbs = [node for node in self.nbs
+                              if not node.visited]
+
+    def update(self):
+        self.set_unvisited_nbs()
+        if self.current:
+            self.visited = True
+            if self.unvisited_nbs:
+                rnd_choice = choice(self.unvisited_nbs)
+                self.links.append(rnd_choice)
+                self.current = False
+                rnd_choice.current = True
+                rnd_choice.visited = True
+                rnd_choice.cor = self.cor + 1
+            else:
+                branch_nodes = [node for node in Node.nodes
+                                if node.visited and node.unvisited_nbs]
+                if branch_nodes:
+                    print(len(branch_nodes))
+                    rnd_choice = branch_nodes[0] # choice(branch_nodes)
+                    self.current = False
+                    rnd_choice.current = True
+                else:
+                    print("finished")
+                    noLoop()
+
+
+def print_text_for_readme(name, output):
+    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(name, name[1:], output)
+    )
diff --git a/s177_gif/gif_export_wrapper.py b/s177_gif/gif_export_wrapper.py
new file mode 100644
index 00000000..ebbea864
--- /dev/null
+++ b/s177_gif/gif_export_wrapper.py
@@ -0,0 +1,47 @@
+"""
+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=128,          # quality range 0 - 255
+               delay=170,            # this is quick
+               frames=0,
+               finish=False):            # 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 finish:
+        gifExporter.finish()
+        noLoop()
+    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/s177_gif/s177_gif.pyde b/s177_gif/s177_gif.pyde
new file mode 100644
index 00000000..9c446462
--- /dev/null
+++ b/s177_gif/s177_gif.pyde
@@ -0,0 +1,95 @@
+# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
+from random import choice
+from gif_export_wrapper import *
+add_library('gifAnimation')
+
+GRID_SIZE = 40
+SKETCH_NAME = "s177"
+OUTPUT = ".gif"
+
+def setup():
+    randomSeed(1)
+    size(700, 700)
+    colorMode(HSB)
+    strokeCap(PROJECT)
+    strokeWeight(12)
+    print_text_for_readme(SKETCH_NAME, OUTPUT)
+    border = 5
+    spacing = (width - border * 2) / GRID_SIZE
+    Node.spacing = spacing
+    for x in range(GRID_SIZE):
+        for y in range(GRID_SIZE):
+            Node.nodes.append(Node(border + spacing / 2 + x * spacing,
+                                   border + spacing / 2 + y * spacing))
+    for node in Node.nodes:
+        node.set_nbs()
+
+    Node.nodes[0].current = True
+
+def draw():
+
+    background(0)
+    for node in Node.nodes:
+        node.plot_links()
+        node.update()
+
+class Node():
+    nodes = []
+
+    def __init__(self, x, y):
+        self.x = x
+        self.y = y
+        self.visited = False
+        self.current = False
+        self.links = []
+        self.cor = 0
+
+    def plot_links(self):
+        for node in self.links:
+            stroke(color(self.cor % 256, 255, 255, 200))
+            line(node.x, node.y, self.x, self.y)
+
+    def set_nbs(self):
+        self.nbs, self.unvisited_nbs = [], []
+        for node in Node.nodes:
+            if node != self and dist(node.x, node.y,
+                                     self.x, self.y) <= Node.spacing:
+                self.nbs.append(node)
+                self.unvisited_nbs.append(node)
+
+    def set_unvisited_nbs(self):
+        self.unvisited_nbs = [node for node in self.nbs
+                              if not node.visited]
+
+    def update(self):
+        self.set_unvisited_nbs()
+        if self.current:
+            self.visited = True
+            if self.unvisited_nbs:
+                rnd_choice = choice(self.unvisited_nbs)
+                self.links.append(rnd_choice)
+                self.current = False
+                rnd_choice.current = True
+                rnd_choice.visited = True
+                rnd_choice.cor = self.cor + 1
+            else:
+                branch_nodes = [node for node in Node.nodes
+                                if node.visited and node.unvisited_nbs]
+                if branch_nodes:
+                    print(len(branch_nodes))
+                    rnd_choice = branch_nodes[0] # choice(branch_nodes)
+                    self.current = False
+                    rnd_choice.current = True
+                else:
+                    print("finished")
+                    noLoop()
+
+
+def print_text_for_readme(name, output):
+    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(name, name[1:], output)
+    )
diff --git a/s178/s178.pyde b/s178/s178.pyde
new file mode 100644
index 00000000..9c814b32
--- /dev/null
+++ b/s178/s178.pyde
@@ -0,0 +1,93 @@
+# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
+from random import choice
+
+GRID_SIZE = 49
+SKETCH_NAME = "s178"
+OUTPUT = ".png"
+
+def setup():
+    randomSeed(1)
+    size(700, 700)
+    colorMode(HSB)
+    strokeCap(ROUND)
+    strokeWeight(10)
+    print_text_for_readme(SKETCH_NAME, OUTPUT)
+    border = 5
+    spacing = (width - border * 2) / GRID_SIZE
+    Node.spacing = spacing
+    for x in range(GRID_SIZE):
+        for y in range(GRID_SIZE):
+            Node.nodes.append(Node(border + spacing / 2 + x * spacing,
+                                   border + spacing / 2 + y * spacing))
+    for node in Node.nodes:
+        node.set_nbs()
+
+    Node.nodes[0].current = True
+
+def draw():
+
+    background(0)
+    for node in Node.nodes:
+        node.plot_links()
+        node.update()
+
+class Node():
+    nodes = []
+
+    def __init__(self, x, y):
+        self.x = x
+        self.y = y
+        self.visited = False
+        self.current = False
+        self.links = []
+        self.cor = 0
+
+    def plot_links(self):
+        for node in self.links:
+            stroke(color(self.cor % 256, 255, 255, 200))
+            line(node.x, node.y, self.x, self.y)
+
+    def set_nbs(self):
+        self.nbs, self.unvisited_nbs = [], []
+        for node in Node.nodes:
+            if node != self and dist(node.x, node.y,
+                                     self.x, self.y) <= Node.spacing:
+                self.nbs.append(node)
+                self.unvisited_nbs.append(node)
+
+    def set_unvisited_nbs(self):
+        self.unvisited_nbs = [node for node in self.nbs
+                              if not node.visited]
+
+    def update(self):
+        self.set_unvisited_nbs()
+        if self.current:
+            self.visited = True
+            if self.unvisited_nbs:
+                rnd_choice = choice(self.unvisited_nbs)
+                self.links.append(rnd_choice)
+                self.current = False
+                rnd_choice.current = True
+                rnd_choice.visited = True
+                rnd_choice.cor = self.cor + 1
+            else:
+                branch_nodes = [node for node in Node.nodes
+                                if node.visited and node.unvisited_nbs]
+                if branch_nodes:
+                    print(len(branch_nodes))
+                    rnd_choice = choice((branch_nodes[-1], branch_nodes[0])) # choice(branch_nodes)
+                    self.current = False
+                    rnd_choice.current = True
+                else:
+                    print("finished")
+                    noLoop()
+
+
+def print_text_for_readme(name, output):
+    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(name, name[1:], output)
+    )