from extruder_turtle import ExtruderTurtle
import math
## Parameters for the spiral
N = 40 ## Number of subdivisions of one round-trip
radius = 20 ## Outer radius of the spiral
dtheta = 2 * math.pi / N ## Change in heading after each step
dx = radius * dtheta ## Forward movement during each step
dr = -0.5 / N ## Change in radius with each step
t = ExtruderTurtle()
t.name("alien-tree.gcode")
t.setup(x=100, y=100)
t.set_density(0.07) # 0.05
t.rate(500)
while radius > 0:
t.forward(dx)
t.right(dtheta)
radius += dr
dx = radius * dtheta
for l in range(50):
t.extrude(0.1)
t.dwell(100)
t.lift(0.05) # 0.1
for x in range(60):
for l in range(10):
t.extrude(0.1)
FEEDRATE = 700
NUM_HAIRS = 200
LAYER_HEIGHT = 0.3
DIAMETER = 80
NUM_SIDES = 5
LAYERS = 200
dtheta = 2 * math.pi / NUM_HAIRS
dx = DIAMETER * math.sin(dtheta / 2)
t = ExtruderTurtle()
## Set up the turtle
t.name("flex-circle.gcode")
t.setup(x=100, y=100)
t.rate(FEEDRATE)
t.set_density(EXT_DENSITY)
for l in range(LAYERS):
for k in range(NUM_HAIRS):
t.right(dtheta)
t.forward(dx)
t.left(HAIR_ANGLE)
t.forward(HAIRLENGTH)
t.dwell(50)
t.forward(-2 * HAIRLENGTH)
t.dwell(50)
t.forward(HAIRLENGTH)
t.right(HAIR_ANGLE)
## Move to the next layer
from extruder_turtle import ExtruderTurtle
import math
t = ExtruderTurtle()
t.name("complex-walk.gcode")
t.setup(x=100, y=100)
t.rate(700)
N = 75
period = 224
angle = 2 * math.pi / N
for l in range(30):
for k in range(period + 1):
t.forward(2)
t.right(angle * k * (k - 1) / 2)
t.lift(0.3)
t.finish()
from extruder_turtle import ExtruderTurtle
import math
N = 60
RADIUS = 12
dtheta = 2 * math.pi / N
dx = RADIUS * dtheta
dr = -5 / N
MAX_HEIGHT = 10
t = ExtruderTurtle()
t.name("spiral-tower.gcode")
t.setup(x=100, y=100)
t.set_density(0.05)
t.rate(1000)
for l in range(40):
radius = RADIUS
prop = l / 40
while radius > 0:
t.move_lift(dx, prop * MAX_HEIGHT * (-dr) / RADIUS)
t.right(dtheta)
radius += dr
dx = radius * dtheta
t.lift(0.2)
while radius < RADIUS:
radius += -dr
dx = radius * dtheta
t.left(dtheta)
t.move_lift(-dx, prop * MAX_HEIGHT * dr / RADIUS)
from extruder_turtle import ExtruderTurtle
import math
t = ExtruderTurtle()
t.name("stretchy-material.gcode")
t.setup(x=100, y=100)
t.rate(900)
t.set_density(0.05)
for l in range(5):
for r in range(5):
for n in range(4):
t.forward(10)
t.right(math.pi / 2)
t.forward(4)
t.left(math.pi / 2)
t.forward(2)
t.left(math.pi / 2)
t.forward(8)
t.right(math.pi / 2)
t.forward(2)
t.right(math.pi / 2)
t.forward(4)
t.left(math.pi / 2)
sgn = (-1)**(r % 2)
t.forward(10)
t.left(math.pi / 2 * sgn)
t.forward(14)
t.left(math.pi / 2 * sgn)
t.left(math.pi / 2)
"A": "+BF-AFA-FB+",
"B": "-AF+BFB+FA-",
"F": "F",
"+": "+",
"-": "-"
}
GENS = 5
sidelength = 50 / 2**GENS
t = ExtruderTurtle()
t.name("hilbert.gcode")
t.setup(x=100, y=100)
t.set_density(0.05)
t.rate(800)
for g in range(GENS):
new_instr = ""
for r in instr:
new_instr += sub_rules[r]
instr = new_instr
for l in range(10):
for r in instr:
if r == "F": t.forward(sidelength)
elif r == "+": t.right(math.pi / 2)
elif r == "-": t.left(math.pi / 2)
t.lift(0.3)
for r in reversed(instr):
if r == "F": t.backward(sidelength)
from extruder_turtle import ExtruderTurtle
import math
t = ExtruderTurtle()
t.name("horizontal-brush.gcode")
t.setup(x=200, y=100)
t.rate(700)
t.set_density(0.05)
for l in range(100):
t.forward(5)
t.right(math.pi / 2)
t.forward(20)
t.right(math.pi / 2)
t.forward(5)
t.right(math.pi / 2)
if l % 5 == 3:
t.forward(0.5)
for i in range(19):
t.left(math.pi / 2)
t.rate(3000)
t.set_density(0.02)
t.forward(50)
t.lift(0.2 - l * 0.2)
t.penup()
t.forward(10)
t.lift(l * 0.2 - 0.2)
t.forward(-10)
t.lift(10)
t.right(math.pi)
from extruder_turtle import ExtruderTurtle
import math
t = ExtruderTurtle()
## Set up the turtle
t.name("feedrate-test.gcode")
t.setup(x=100, y=100)
## Parameters
min_rate = 200
max_rate = 10000
height = 200
for l in range(height):
## Feedrate increases linearly from one layer to the next,
## making the extruder move faster and faster
t.rate(min_rate + l * (max_rate - min_rate) / height)
## Draw a square
for k in range(4):
t.move(30)
t.right(math.pi / 2)
## Move to the next layer
t.lift(0.3)
## Save to a GCODE file
t.finish()
from extruder_turtle import ExtruderTurtle
import math
LENGTH = 20
PILLAR_ROWS = 8
t = ExtruderTurtle()
## Set up the turtle
t.name("pillar-array.gcode")
t.setup(x=100, y=100)
t.lift(0.1)
t.rate(700)
t.set_density(0.05)
num_zigzags = math.floor(LENGTH / 0.4)
for i in range(num_zigzags):
t.forward(LENGTH)
t.right(math.pi / 2)
t.forward(0.2)
t.right(math.pi / 2)
t.forward(LENGTH)
t.left(math.pi / 2)
t.forward(0.2)
t.left(math.pi / 2)
t.lift(0.1)
pillar_space = LENGTH / PILLAR_ROWS
t.penup()
t.rate(1500)
for i in range(PILLAR_ROWS):
from extruder_turtle import ExtruderTurtle
import math
import random
SIDELENGTH = 20
BUMPLENGTH = 1
BUMP_ANGLE = math.pi / 2
NUM_SIDES = 6
LAYERS = 100
t = ExtruderTurtle()
## Set up the turtle
t.name("bumpy-prism.gcode")
t.setup(x=100, y=100)
t.rate(700)
t.set_density(0.07)
for l in range(LAYERS):
## Draw a pentagon
for k in range(NUM_SIDES):
## Draw one side, with a randomly placed bump
x = SIDELENGTH * random.random()
t.move(x)
t.left(BUMP_ANGLE)
t.rate(100)
t.move(BUMPLENGTH)
t.dwell(50)
t.move(-BUMPLENGTH)
t.rate(700)
t.right(BUMP_ANGLE)
