diff --git a/s105/s105.pyde b/s105/s105.pyde
new file mode 100644
index 00000000..0453db2c
--- /dev/null
+++ b/s105/s105.pyde
@@ -0,0 +1,94 @@
+# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
+SKETCH_NAME = "s105"  # 180415
+
+add_library('serial')  # import processing.serial.*;
+add_library('arduino')  # import cc.arduino.*;
+#add_library('gifAnimation')
+
+#from gif_exporter import *
+from inputs import *
+
+def setup():
+    global input, GIF_EXPORT, ELEMENTS
+    size(600, 600)
+    noFill()  # sem contorno
+    frameRate(30)
+    strokeWeight(3)
+    ELEMENTS = []
+    GIF_EXPORT = False
+    # Ask user for Arduino port, uses slider if none is selected`
+    input = Input(Arduino, slider_pins=[1, 2, 3, 4])
+
+def draw():
+    background(127)  # fundo cinza claro
+
+    grid_elem = int(input.analog(1) / 16)  # 0 a 63 linhas e colunas na grade
+    elem_size = int(input.analog(2) / 16)  # 0 a 63 tamanho base dos quadrados
+    rand_size = int(input.analog(3) / 16)  # escala a randomização do tamanho
+    rand_posi = int(input.analog(4) / 16)  # escala a randomização da posição
+    # trava a random entre os ciclos de draw
+    # mas varia com o número de colunas na grade
+    randomSeed(int(input.analog(1)) / 4)
+    # espaçamento entre os elementos
+    spac_size = width / (grid_elem + 1)
+    v = spac_size * 1.5
+    h = spac_size * sqrt(3)
+    for ix in range(-1, grid_elem + 1):
+        for iy in range(-1, grid_elem + 1):
+            if iy % 2:
+                x = ix * h + h / 4
+            else:
+                x = ix * h - h / 4
+            y = iy * v
+            for i in range(3):
+                final_size = elem_size * (i+0.5)
+                C = map(final_size, 0, 63, 0, 255)
+                ELEMENTS.append((C, x, y, final_size))
+    # three layers of elements            
+    for i in range(3):
+        offsetX = rand_posi * random(-1, 1)
+        offsetY = rand_posi * random(-1, 1)
+        for elem in ELEMENTS[i::3]:
+            st, x, y, es = elem
+            fs = es + rand_size * random(-1, 1)
+            stroke(st)
+            ellipse(x + offsetX, y + offsetY, fs, fs)
+
+    # for _ in range(grid_elem):
+    #     stroke1, x1, y1, es1 = rnd_choice(ELEMENTS)
+    #     stroke2, x2, y2, es2 = rnd_choice(ELEMENTS)
+    #     #stroke(stroke1)
+    #     line(x1, y1, x2, y2)
+
+    # empty list
+    ELEMENTS[:] = []
+
+    # uncomment next lines to export GIF
+    # global GIF_EXPORT
+    # if not frameCount % 20 and GIF_EXPORT:
+    #     GIF_EXPORT = gif_export(GifMaker,
+    #                             frames=1000,
+    #                             delay=300,
+    #                             filename=SKETCH_NAME)
+
+    # Updates reading or draws sliders and checks mouse dragging / keystrokes
+    input.update()
+
+
+def keyPressed():
+    global GIF_EXPORT
+    if key == 'p':  # save PNG
+        saveFrame("####.png")
+    if key == 'g':  # save GIF
+        GIF_EXPORT = True
+    if key == 'h':
+        input.help()
+
+    input.keyPressed()
+
+def keyReleased():
+    input.keyReleased()
+
+def rnd_choice(collection):
+    i = int(random(len(collection)))
+    return collection[i]