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nhf/primitive.py Normal file
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import cadquery as Cq
def mystery():
return (
Cq.Workplane("XY")
.box(10, 5, 5)
.faces(">Z")
.workplane()
.hole(1)
.edges("|Z")
.fillet(2)
)

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#+title: Cosplay: Houjuu Nue
* Controller
This part describes the electrical connections and the microcontroller code.
* Structure
This part describes the 3d printed and laser cut structures. ~structure.blend~
is an overall sketch of the shapes and looks of the wing.
* Pattern
This part describes the sewing patterns.

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"""
To build, execute
```
python3 nhf/touhou/houjuu_nue/__init__.py
```
This cosplay consists of 3 components:
## Trident
The trident is composed of individual segments, made of acrylic, and a 3D
printed head (convention rule prohibits metal) with a metallic paint. To ease
transportation, the trident handle has individual segments with threads and can
be assembled on site.
## Snake
A 3D printed snake with a soft material so it can wrap around and bend
## Wings
This is the crux of the cosplay and the most complex component. The wings mount
on a wearable harness. Each wing consists of 4 segments with 3 joints. Parts of
the wing which demands transluscency are created from 1/16" acrylic panels.
These panels serve double duty as the exoskeleton.
The wings are labeled r1,r2,r3,l1,l2,l3. The segments of the wings are labeled
from root to tip s0 (root),
s1, s2, s3. The joints are named (from root to tip)
shoulder, elbow, wrist in analogy with human anatomy.
"""
from dataclasses import dataclass, field
from typing import Optional
import cadquery as Cq
from nhf.build import Model, TargetKind, target, assembly, submodel
import nhf.touhou.houjuu_nue.wing as MW
import nhf.touhou.houjuu_nue.trident as MT
import nhf.touhou.houjuu_nue.joints as MJ
import nhf.touhou.houjuu_nue.harness as MH
import nhf.touhou.houjuu_nue.electronics as ME
from nhf.parts.item import Item
import nhf.utils
WING_DEFLECT_ODD = 0.0
WING_DEFLECT_EVEN = 25.0
@dataclass
class Parameters(Model):
"""
Defines dimensions for the Houjuu Nue cosplay
"""
harness: MH.Harness = field(default_factory=lambda: MH.Harness())
wing_r1: MW.WingR = field(default_factory=lambda: MW.WingR(
name="r1",
root_joint=MJ.RootJoint(
parent_substrate_cull_corners=(0,1,1,1),
parent_substrate_cull_edges=(0,0,1,0),
),
shoulder_angle_bias=WING_DEFLECT_ODD,
s0_top_hole=False,
s0_bot_hole=True,
arrow_height=350.0
))
wing_r2: MW.WingR = field(default_factory=lambda: MW.WingR(
name="r2",
root_joint=MJ.RootJoint(
parent_substrate_cull_corners=(1,1,1,1),
parent_substrate_cull_edges=(0,0,1,0),
),
electronic_board=ME.ElectronicBoardControl(),
shoulder_angle_bias=WING_DEFLECT_EVEN,
s0_top_hole=True,
s0_bot_hole=True,
))
wing_r3: MW.WingR = field(default_factory=lambda: MW.WingR(
name="r3",
root_joint=MJ.RootJoint(
parent_substrate_cull_corners=(1,1,1,0),
parent_substrate_cull_edges=(0,0,1,0),
),
shoulder_angle_bias=WING_DEFLECT_ODD,
s0_top_hole=True,
s0_bot_hole=False,
))
wing_l1: MW.WingL = field(default_factory=lambda: MW.WingL(
name="l1",
root_joint=MJ.RootJoint(
parent_substrate_cull_corners=(1,0,1,1),
parent_substrate_cull_edges=(1,0,0,0),
),
shoulder_angle_bias=WING_DEFLECT_EVEN,
wrist_angle=-60.0,
s0_top_hole=False,
s0_bot_hole=True,
))
wing_l2: MW.WingL = field(default_factory=lambda: MW.WingL(
name="l2",
root_joint=MJ.RootJoint(
parent_substrate_cull_corners=(1,1,1,1),
parent_substrate_cull_edges=(1,0,0,0),
),
wrist_angle=-30.0,
shoulder_angle_bias=WING_DEFLECT_ODD,
s0_top_hole=True,
s0_bot_hole=True,
))
wing_l3: MW.WingL = field(default_factory=lambda: MW.WingL(
name="l3",
root_joint=MJ.RootJoint(
parent_substrate_cull_corners=(1,1,0,1),
parent_substrate_cull_edges=(1,0,0,0),
),
shoulder_angle_bias=WING_DEFLECT_EVEN,
wrist_angle=-0.0,
s0_top_hole=True,
s0_bot_hole=False,
))
trident: MT.Trident = field(default_factory=lambda: MT.Trident())
def __post_init__(self):
super().__init__(name="houjuu-nue")
@submodel(name="harness")
def submodel_harness(self) -> Model:
return self.harness
@submodel(name="wing-r1")
def submodel_wing_r1(self) -> Model:
return self.wing_r1
@submodel(name="wing-r2")
def submodel_wing_r2(self) -> Model:
return self.wing_r2
@submodel(name="wing-r3")
def submodel_wing_r3(self) -> Model:
return self.wing_r3
@submodel(name="wing-l1")
def submodel_wing_l1(self) -> Model:
return self.wing_l1
@submodel(name="wing-l2")
def submodel_wing_l2(self) -> Model:
return self.wing_l2
@submodel(name="wing-l3")
def submodel_wing_l3(self) -> Model:
return self.wing_l3
@assembly()
def wings_harness_assembly(self,
parts: Optional[list[str]] = None,
**kwargs) -> Cq.Assembly:
"""
Assembly of harness with all the wings
"""
result = (
Cq.Assembly()
.add(self.harness.assembly(), name="harness", loc=Cq.Location((0, 0, 0)))
.add(self.wing_r1.assembly(parts, root_offset=9, **kwargs), name="wing_r1")
.add(self.wing_r2.assembly(parts, root_offset=7, **kwargs), name="wing_r2")
.add(self.wing_r3.assembly(parts, root_offset=6, **kwargs), name="wing_r3")
.add(self.wing_l1.assembly(parts, root_offset=19, **kwargs), name="wing_l1")
.add(self.wing_l2.assembly(parts, root_offset=20, **kwargs), name="wing_l2")
.add(self.wing_l3.assembly(parts, root_offset=21, **kwargs), name="wing_l3")
)
for tag in ["r1", "r2", "r3", "l1", "l2", "l3"]:
self.harness.add_root_joint_constraint(
result,
"harness/base",
f"wing_{tag}/root",
tag
)
return result.solve()
@submodel(name="trident")
def submodel_trident(self) -> Model:
return self.trident
def stat(self) -> dict[str, float]:
a = self.wings_harness_assembly()
bbox = a.toCompound().BoundingBox()
return {
"wing-span": bbox.xlen,
"wing-depth": bbox.ylen,
"wing-height": bbox.zlen,
"wing-mass": a.total_mass(),
"wing-centre-of-mass": a.centre_of_mass().toTuple(),
"items": Item.count(a),
}
if __name__ == '__main__':
import sys
p = Parameters()
if len(sys.argv) == 1:
p.build_all()
sys.exit(0)
if sys.argv[1] == 'stat':
print(p.stat())
elif sys.argv[1] == 'model':
file_name = sys.argv[2]
a = p.wings_harness_assembly()
a.save(file_name, exportType='STEP')

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from nhf.parts.fasteners import FlatHeadBolt, HexNut, ThreaddedKnob
NUT_COMMON = HexNut(
# FIXME: measure
mass=0.0,
diam_thread=4.0,
pitch=0.7,
thickness=3.2,
width=7.0,
)
BOLT_COMMON = FlatHeadBolt(
# FIXME: measure
mass=0.0,
diam_head=8.0,
height_head=2.0,
diam_thread=4.0,
height_thread=20.0,
)

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#include <FastLED.h>
// Main LED strip setup
#define LED_PIN 5
#define NUM_LEDS 100
#define LED_PART 50
#define BRIGHTNESS 250
#define LED_TYPE WS2811
CRGB leds[NUM_LEDS];
CRGB color_red;
CRGB color_blue;
CRGB color_green;
#define DIAG_PIN 6
void setup() {
// Calculate colors
hsv2rgb_spectrum(CHSV(4, 255, 100), color_red);
hsv2rgb_spectrum(CHSV(170, 255, 100), color_blue);
hsv2rgb_spectrum(CHSV(90, 255, 100), color_green);
pinMode(LED_BUILTIN, OUTPUT);
pinMode(LED_PIN, OUTPUT);
pinMode(DIAG_PIN, OUTPUT);
// Main LED strip
FastLED.addLeds<LED_TYPE, LED_PIN, RGB>(leds, NUM_LEDS);
}
void loop() {
fill_segmented(CRGB::Green, CRGB::Orange);
delay(500);
flash(leds, NUM_LEDS, color_red, 10, 20);
delay(500);
flash(leds, NUM_LEDS, color_blue, 10, 20);
delay(500);
}
void fill_segmented(CRGB c1, CRGB c2)
{
//fill_solid(leds, LED_PART, c1);
fill_gradient_RGB(leds, LED_PART, CRGB::Black ,c1);
fill_gradient_RGB(leds + LED_PART, NUM_LEDS - LED_PART, CRGB::Black, c2);
FastLED.show();
}
void flash(CRGB *ptr, uint16_t num, CRGB const& lead, int steps, int step_time)
{
digitalWrite(LED_BUILTIN, LOW);
//fill_solid(leds, NUM_LEDS, CRGB::Black);
for (int i = 0; i < steps; ++i)
{
uint8_t factor = 255 * i / steps;
analogWrite(DIAG_PIN, factor);
CRGB tail = blend(lead, CRGB::Black, factor);
uint16_t front = factor * (int) num / 255;
fill_solid(ptr, front, tail);
//fill_gradient_RGB(ptr, front, tail, lead);
//fill_solid(leds + front, NUM_LEDS - front, CRGB::Black);
FastLED.show();
delay(step_time);
}
fill_gradient_RGB(ptr, num, CRGB::Black, lead);
FastLED.show();
analogWrite(DIAG_PIN, LOW);
}

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"""
Electronic components
"""
from dataclasses import dataclass, field
from typing import Optional, Tuple
import math
import cadquery as Cq
from nhf.build import Model, TargetKind, target, assembly, submodel
from nhf.materials import Role, Material
from nhf.parts.box import MountingBox, Hole
from nhf.parts.fibre import tension_fibre
from nhf.parts.item import Item
from nhf.parts.fasteners import FlatHeadBolt, HexNut
from nhf.parts.electronics import ArduinoUnoR3, BatteryBox18650
from nhf.touhou.houjuu_nue.common import NUT_COMMON, BOLT_COMMON
import nhf.utils
@dataclass(frozen=True)
class LinearActuator(Item):
stroke_length: float
shaft_diam: float = 9.04
front_hole_ext: float = 4.41
front_hole_diam: float = 4.41
front_length: float = 9.55
front_width: float = 9.24
front_height: float = 5.98
segment1_length: float = 37.54
segment1_width: float = 15.95
segment1_height: float = 11.94
segment2_length: float = 37.37
segment2_width: float = 20.03
segment2_height: float = 15.03
back_hole_ext: float = 4.58
back_hole_diam: float = 4.18
back_length: float = 9.27
back_width: float = 10.16
back_height: float = 8.12
@property
def name(self) -> str:
return f"LinearActuator {self.stroke_length}mm"
@property
def role(self) -> Role:
return Role.MOTION
@property
def conn_length(self):
return self.segment1_length + self.segment2_length + self.front_hole_ext + self.back_hole_ext
def generate(self, pos: float=0) -> Cq.Assembly:
assert -1e-6 <= pos <= 1 + 1e-6, f"Illegal position: {pos}"
stroke_x = pos * self.stroke_length
front = (
Cq.Workplane('XZ')
.cylinder(
radius=self.front_width / 2,
height=self.front_height,
centered=True,
)
.box(
length=self.front_hole_ext,
width=self.front_width,
height=self.front_height,
combine=True,
centered=(False, True, True)
)
.copyWorkplane(Cq.Workplane('XZ'))
.cylinder(
radius=self.front_hole_diam / 2,
height=self.front_height,
centered=True,
combine='cut',
)
)
front.copyWorkplane(Cq.Workplane('XZ')).tagPlane('conn')
if stroke_x > 0:
shaft = (
Cq.Workplane('YZ')
.cylinder(
radius=self.shaft_diam / 2,
height=stroke_x,
centered=(True, True, False)
)
)
else:
shaft = None
segment1 = (
Cq.Workplane()
.box(
length=self.segment1_length,
height=self.segment1_width,
width=self.segment1_height,
centered=(False, True, True),
)
)
segment2 = (
Cq.Workplane()
.box(
length=self.segment2_length,
height=self.segment2_width,
width=self.segment2_height,
centered=(False, True, True),
)
)
back = (
Cq.Workplane('XZ')
.cylinder(
radius=self.back_width / 2,
height=self.back_height,
centered=True,
)
.box(
length=self.back_hole_ext,
width=self.back_width,
height=self.back_height,
combine=True,
centered=(False, True, True)
)
.copyWorkplane(Cq.Workplane('XZ'))
.cylinder(
radius=self.back_hole_diam / 2,
height=self.back_height,
centered=True,
combine='cut',
)
)
back.faces(">X").tag("dir")
back.copyWorkplane(Cq.Workplane('XZ')).tagPlane('conn')
result = (
Cq.Assembly()
.add(front, name="front",
loc=Cq.Location((-self.front_hole_ext, 0, 0)))
.add(segment1, name="segment1",
loc=Cq.Location((stroke_x, 0, 0)))
.add(segment2, name="segment2",
loc=Cq.Location((stroke_x + self.segment1_length, 0, 0)))
.add(back, name="back",
loc=Cq.Location((stroke_x + self.segment1_length + self.segment2_length + self.back_hole_ext, 0, 0), (0, 1, 0), 180))
)
if shaft:
result.add(shaft, name="shaft")
return result
@dataclass(frozen=True)
class MountingBracket(Item):
"""
Mounting bracket for a linear actuator
"""
mass: float = 1.6
hole_diam: float = 4.0
width: float = 8.0
height: float = 12.20
thickness: float = 0.98
length: float = 13.00
hole_to_side_ext: float = 8.25
def __post_init__(self):
assert self.hole_to_side_ext - self.hole_diam / 2 > 0
@property
def name(self) -> str:
return f"MountingBracket M{int(self.hole_diam)}"
@property
def role(self) -> Role:
return Role.MOTION
def generate(self) -> Cq.Workplane:
result = (
Cq.Workplane('XY')
.box(
length=self.hole_to_side_ext,
width=self.width,
height=self.height,
centered=(False, True, True)
)
.copyWorkplane(Cq.Workplane('XY'))
.cylinder(
height=self.height,
radius=self.width / 2,
combine=True,
)
.copyWorkplane(Cq.Workplane('XY'))
.box(
length=2 * (self.hole_to_side_ext - self.thickness),
width=self.width,
height=self.height - self.thickness * 2,
combine='cut',
)
.copyWorkplane(Cq.Workplane('XY'))
.cylinder(
height=self.height,
radius=self.hole_diam / 2,
combine='cut'
)
.copyWorkplane(Cq.Workplane('YZ'))
.cylinder(
height=self.hole_to_side_ext * 2,
radius=self.hole_diam / 2,
combine='cut'
)
)
result.copyWorkplane(Cq.Workplane('YZ', origin=(self.hole_to_side_ext, 0, 0))).tagPlane("conn_side")
result.copyWorkplane(Cq.Workplane('XY', origin=(0, 0, self.height/2))).tagPlane("conn_top")
result.copyWorkplane(Cq.Workplane('YX', origin=(0, 0, -self.height/2))).tagPlane("conn_bot")
result.copyWorkplane(Cq.Workplane('XY')).tagPlane("conn_mid")
return result
LINEAR_ACTUATOR_50 = LinearActuator(
mass=40.8,
stroke_length=50,
shaft_diam=9.05,
front_hole_ext=4.32,
back_hole_ext=4.54,
segment1_length=57.35,
segment1_width=15.97,
segment1_height=11.95,
segment2_length=37.69,
segment2_width=19.97,
segment2_height=14.96,
front_length=9.40,
front_width=9.17,
front_height=6.12,
back_length=9.18,
back_width=10.07,
back_height=8.06,
)
LINEAR_ACTUATOR_30 = LinearActuator(
mass=34.0,
stroke_length=30,
)
LINEAR_ACTUATOR_21 = LinearActuator(
# FIXME: Measure
mass=0.0,
stroke_length=21,
front_hole_ext=4,
back_hole_ext=4,
segment1_length=34,
segment2_length=34,
)
LINEAR_ACTUATOR_10 = LinearActuator(
mass=41.3,
stroke_length=10,
front_hole_ext=4.02,
back_hole_ext=4.67,
segment1_length=13.29,
segment1_width=15.88,
segment1_height=12.07,
segment2_length=42.52,
segment2_width=20.98,
segment2_height=14.84,
)
LINEAR_ACTUATOR_HEX_NUT = HexNut(
mass=0.8,
diam_thread=4,
pitch=0.7,
thickness=4.16,
width=6.79,
)
LINEAR_ACTUATOR_BOLT = FlatHeadBolt(
mass=1.7,
diam_head=6.68,
height_head=2.98,
diam_thread=4.0,
height_thread=15.83,
)
LINEAR_ACTUATOR_BRACKET = MountingBracket()
BATTERY_BOX = BatteryBox18650()
# Acrylic hex nut
ELECTRONIC_MOUNT_HEXNUT = HexNut(
mass=0.8,
diam_thread=4,
pitch=0.7,
thickness=3.57,
width=6.81,
)
@dataclass(kw_only=True, frozen=True)
class Winch:
linear_motion_span: float
actuator: LinearActuator = LINEAR_ACTUATOR_21
nut: HexNut = LINEAR_ACTUATOR_HEX_NUT
bolt: FlatHeadBolt = LINEAR_ACTUATOR_BOLT
bracket: MountingBracket = LINEAR_ACTUATOR_BRACKET
@dataclass(kw_only=True)
class Flexor:
"""
Actuator assembly which flexes, similar to biceps
"""
motion_span: float
arm_radius: Optional[float] = None
pos_smaller: bool = True
actuator: LinearActuator = LINEAR_ACTUATOR_50
nut: HexNut = LINEAR_ACTUATOR_HEX_NUT
bolt: FlatHeadBolt = LINEAR_ACTUATOR_BOLT
bracket: MountingBracket = LINEAR_ACTUATOR_BRACKET
# Length of line attached to the flexor
line_length: float = 0.0
line_thickness: float = 0.5
# By how much is the line permitted to slack. This reduces the effective stroke length
line_slack: float = 0.0
def __post_init__(self):
assert self.line_slack <= self.line_length, f"Insufficient length: {self.line_slack} >= {self.line_length}"
assert self.line_slack < self.actuator.stroke_length
@property
def mount_height(self):
return self.bracket.hole_to_side_ext
@property
def d_open(self):
return self.actuator.conn_length + self.actuator.stroke_length + self.line_length - self.line_slack
@property
def d_closed(self):
return self.actuator.conn_length + self.line_length
def open_pos(self) -> Tuple[float, float, float]:
r, phi, r_ = nhf.geometry.contraction_span_pos_from_radius(
d_open=self.d_open,
d_closed=self.d_closed,
theta=math.radians(self.motion_span),
r=self.arm_radius,
smaller=self.pos_smaller,
)
return r, math.degrees(phi), r_
def target_length_at_angle(
self,
angle: float = 0.0
) -> float:
"""
Length of the actuator at some angle
"""
assert 0 <= angle <= self.motion_span
r, phi, rp = self.open_pos()
th = math.radians(phi - angle)
result = math.sqrt(r * r + rp * rp - 2 * r * rp * math.cos(th))
#result = math.sqrt((r * math.cos(th) - rp) ** 2 + (r * math.sin(th)) ** 2)
assert self.d_closed -1e-6 <= result <= self.d_open + 1e-6,\
f"Illegal length: {result} not in [{self.d_closed}, {self.d_open}]"
return result
def add_to(
self,
a: Cq.Assembly,
target_length: float,
tag_prefix: Optional[str] = None,
tag_hole_front: Optional[str] = None,
tag_hole_back: Optional[str] = None,
tag_dir: Optional[str] = None):
"""
Adds the necessary mechanical components to this assembly. Does not
invoke `a.solve()`.
"""
draft = max(0, target_length - self.d_closed - self.line_length)
pos = draft / self.actuator.stroke_length
line_l = target_length - draft - self.actuator.conn_length
if tag_prefix:
tag_prefix = tag_prefix + "_"
else:
tag_prefix = ""
name_actuator = f"{tag_prefix}actuator"
name_bracket_front = f"{tag_prefix}bracket_front"
name_bracket_back = f"{tag_prefix}bracket_back"
name_bolt_front = f"{tag_prefix}front_bolt"
name_bolt_back = f"{tag_prefix}back_bolt"
name_nut_front = f"{tag_prefix}front_nut"
name_nut_back = f"{tag_prefix}back_nut"
(
a
.add(self.actuator.assembly(pos=pos), name=name_actuator)
.add(self.bracket.assembly(), name=name_bracket_front)
.add(self.bolt.assembly(), name=name_bolt_front)
.add(self.nut.assembly(), name=name_nut_front)
.constrain(f"{name_bolt_front}?root", f"{name_bracket_front}?conn_top",
"Plane", param=0)
.constrain(f"{name_nut_front}?bot", f"{name_bracket_front}?conn_bot",
"Plane")
.add(self.bracket.assembly(), name=name_bracket_back)
.add(self.bolt.assembly(), name=name_bolt_back)
.add(self.nut.assembly(), name=name_nut_back)
.constrain(f"{name_actuator}/back?conn", f"{name_bracket_back}?conn_mid",
"Plane", param=0)
.constrain(f"{name_bolt_back}?root", f"{name_bracket_back}?conn_top",
"Plane", param=0)
.constrain(f"{name_nut_back}?bot", f"{name_bracket_back}?conn_bot",
"Plane")
)
if self.line_length == 0.0:
a.constrain(
f"{name_actuator}/front?conn",
f"{name_bracket_front}?conn_mid",
"Plane", param=0)
else:
(
a
.addS(tension_fibre(
length=line_l,
hole_diam=self.nut.diam_thread,
thickness=self.line_thickness,
), name="fibre", role=Role.CONNECTION)
.constrain(
f"{name_actuator}/front?conn",
"fibre?male",
"Plane"
)
.constrain(
f"{name_bracket_front}?conn_mid",
"fibre?female",
"Plane"
)
)
if tag_hole_front:
a.constrain(tag_hole_front, f"{name_bracket_front}?conn_side", "Plane")
if tag_hole_back:
a.constrain(tag_hole_back, f"{name_bracket_back}?conn_side", "Plane")
if tag_dir:
a.constrain(tag_dir, f"{name_bracket_front}?conn_mid", "Axis", param=0)
@dataclass
class ElectronicBoard(Model):
name: str = "electronic-board"
nut: HexNut = NUT_COMMON
bolt: FlatHeadBolt = BOLT_COMMON
length: float = 70.0
width: float = 170.0
mount_holes: list[Hole] = field(default_factory=lambda: [
Hole(x=25, y=75),
Hole(x=25, y=-75),
Hole(x=-25, y=75),
Hole(x=-25, y=-75),
])
panel_thickness: float = 25.4 / 16
mount_panel_thickness: float = 25.4 / 4
material: Material = Material.WOOD_BIRCH
@property
def mount_hole_diam(self) -> float:
return self.bolt.diam_thread
def __post_init__(self):
super().__init__(name=self.name)
def panel(self) -> MountingBox:
return MountingBox(
holes=self.mount_holes,
hole_diam=self.mount_hole_diam,
length=self.length,
width=self.width,
centred=(True, True),
thickness=self.panel_thickness,
generate_reverse_tags=True,
)
def assembly(self) -> Cq.Assembly:
panel = self.panel()
result = (
Cq.Assembly()
.addS(panel.generate(), name="panel",
role=Role.ELECTRONIC | Role.STRUCTURE, material=self.material)
)
for hole in self.mount_holes:
bolt_name = f"{hole.tag}_bolt"
(
result
.add(self.bolt.assembly(), name=bolt_name)
.constrain(
f"{bolt_name}?root",
f"panel?{hole.tag}",
"Plane", param=0
)
)
return result.solve()
@dataclass
class ElectronicBoardBattery(ElectronicBoard):
name: str = "electronic-board-battery"
battery_box: BatteryBox18650 = BATTERY_BOX
@submodel(name="panel")
def panel_out(self) -> MountingBox:
return self.panel()
@dataclass
class ElectronicBoardControl(ElectronicBoard):
name: str = "electronic-board-control"
controller_datum: Cq.Location = Cq.Location.from2d(-25, 23, -90)
controller: ArduinoUnoR3 = ArduinoUnoR3()
def panel(self) -> MountingBox:
box = super().panel()
def transform(i, x, y):
pos = self.controller_datum * Cq.Location.from2d(x, self.controller.width - y)
x, y = pos.to2d_pos()
return Hole(
x=x, y=y,
diam=self.controller.hole_diam,
tag=f"controller_conn{i}",
)
box.holes = box.holes.copy() + [
transform(i, x, y)
for i, (x, y) in enumerate(self.controller.holes)
]
return box
@submodel(name="panel")
def panel_out(self) -> MountingBox:
return self.panel()
def assembly(self) -> Cq.Assembly:
result = super().assembly()
result.add(self.controller.assembly(), name="controller")
for i in range(len(self.controller.holes)):
result.constrain(f"controller?conn{i}", f"panel?controller_conn{i}", "Plane")
return result.solve()
@dataclass(frozen=True)
class LightStrip:
width: float = 10.0
height: float = 4.5

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from dataclasses import dataclass, field
import cadquery as Cq
from nhf.parts.joints import HirthJoint
from nhf import Material, Role
from nhf.build import Model, TargetKind, target, assembly, submodel
from nhf.touhou.houjuu_nue.joints import RootJoint
from nhf.parts.box import MountingBox
import nhf.utils
@dataclass(frozen=True, kw_only=True)
class Mannequin:
"""
A mannequin for calibration
"""
shoulder_width: float = 400
shoulder_to_waist: float = 440
waist_width: float = 250
head_height: float = 220.0
neck_height: float = 105.0
neck_diam: float = 140
head_diam: float = 210
torso_thickness: float = 150
def generate(self) -> Cq.Workplane:
head_neck = (
Cq.Workplane("XY")
.cylinder(
radius=self.neck_diam/2,
height=self.neck_height,
centered=(True, True, False))
.faces(">Z")
.workplane()
.cylinder(
radius=self.head_diam/2,
height=self.head_height,
combine=True, centered=(True, True, False))
)
result = (
Cq.Workplane("XY")
.rect(self.waist_width, self.torso_thickness)
.workplane(offset=self.shoulder_to_waist)
.rect(self.shoulder_width, self.torso_thickness)
.loft(combine=True)
.union(head_neck.translate((0, 0, self.shoulder_to_waist)))
)
return result.translate((0, self.torso_thickness / 2, 0))
BASE_POS_X = 70.0
BASE_POS_Y = 100.0
@dataclass(kw_only=True)
class Harness(Model):
thickness: float = 25.4 / 8
width: float = 200.0
height: float = 304.8
fillet: float = 10.0
wing_base_pos: list[tuple[str, float, float]] = field(default_factory=lambda: [
("r1", BASE_POS_X, BASE_POS_Y),
("l1", -BASE_POS_X, BASE_POS_Y),
("r2", BASE_POS_X, 0),
("l2", -BASE_POS_X, 0),
("r3", BASE_POS_X, -BASE_POS_Y),
("l3", -BASE_POS_X, -BASE_POS_Y),
])
root_joint: RootJoint = field(default_factory=lambda: RootJoint())
mannequin: Mannequin = Mannequin()
def __post_init__(self):
super().__init__(name="harness")
@submodel(name="bridge-pair-horizontal")
def bridge_pair_horizontal(self) -> MountingBox:
return self.root_joint.bridge_pair_horizontal(centre_dx=BASE_POS_X * 2)
@submodel(name="bridge-pair-vertical")
def bridge_pair_vertical(self) -> MountingBox:
return self.root_joint.bridge_pair_vertical(centre_dy=BASE_POS_Y)
@target(name="profile", kind=TargetKind.DXF)
def profile(self) -> Cq.Sketch:
"""
Creates the harness shape
"""
w, h = self.width / 2, self.height / 2
sketch = (
Cq.Sketch()
.polygon([
(w, h),
(w, -h),
(-w, -h),
(-w, h),
#(0.7 * w, h),
#(w, 0),
#(0.7 * w, -h),
#(0.7 * -w, -h),
#(-w, 0),
#(0.7 * -w, h),
])
#.rect(self.harness_width, self.harness_height)
.vertices()
.fillet(self.fillet)
)
for tag, x, y in self.wing_base_pos:
conn = [(px + x, py + y) for px, py in self.root_joint.corner_pos()]
sketch = (
sketch
.push(conn)
.tag(tag)
.circle(self.root_joint.corner_hole_diam / 2, mode='s')
.reset()
)
return sketch
def surface(self) -> Cq.Workplane:
"""
Creates the harness shape
"""
result = (
Cq.Workplane('XZ')
.placeSketch(self.profile())
.extrude(self.thickness)
)
result.faces(">Y").tag("mount")
plane = result.faces(">Y").workplane()
for tag, x, y in self.wing_base_pos:
conn = [(px + x, py + y) for px, py
in self.root_joint.corner_pos()]
for i, (px, py) in enumerate(conn):
plane.moveTo(px, py).tagPlane(f"{tag}_{i}")
return result
def add_root_joint_constraint(
self,
a: Cq.Assembly,
harness_tag: str,
joint_tag: str,
mount_tag: str):
for i in range(4):
a.constrain(f"{harness_tag}?{mount_tag}_{i}", f"{joint_tag}/parent?h{i}", "Point")
@assembly()
def assembly(self, with_root_joint: bool = False) -> Cq.Assembly:
harness = self.surface()
mannequin_z = self.mannequin.shoulder_to_waist * 0.6
result = (
Cq.Assembly()
.addS(
harness, name="base",
material=Material.WOOD_BIRCH,
role=Role.STRUCTURE)
.constrain("base", "Fixed")
.addS(
self.mannequin.generate(),
name="mannequin",
role=Role.FIXTURE,
loc=Cq.Location((0, -self.thickness, -mannequin_z), (0, 0, 1), 180))
.constrain("mannequin", "Fixed")
)
bridge_h = self.bridge_pair_horizontal().generate()
for i in [1,2,3]:
name = f"r{i}l{i}_bridge"
(
result
.addS(
bridge_h, name=name,
role=Role.FIXTURE,
material=Material.WOOD_BIRCH,
)
.constrain(f"{name}?conn0_rev", f"base?r{i}_1", "Point")
.constrain(f"{name}?conn1_rev", f"base?l{i}_0", "Point")
.constrain(f"{name}?conn2_rev", f"base?l{i}_3", "Point")
.constrain(f"{name}?conn3_rev", f"base?r{i}_2", "Point")
)
bridge_v = self.bridge_pair_vertical().generate()
(
result
.addS(bridge_v, name="r1_bridge", role=Role.FIXTURE, material=Material.WOOD_BIRCH)
.constrain("r1_bridge?conn0_rev", "base?r1_3", 'Plane')
.constrain("r1_bridge?conn1_rev", "base?r2_0", 'Plane')
.addS(bridge_v, name="r2_bridge", role=Role.FIXTURE, material=Material.WOOD_BIRCH)
.constrain("r2_bridge?conn0_rev", "base?r2_3", 'Plane')
.constrain("r2_bridge?conn1_rev", "base?r3_0", 'Plane')
.addS(bridge_v, name="l1_bridge", role=Role.FIXTURE, material=Material.WOOD_BIRCH)
.constrain("l1_bridge?conn0_rev", "base?l1_2", 'Plane')
.constrain("l1_bridge?conn1_rev", "base?l2_1", 'Plane')
.addS(bridge_v, name="l2_bridge", role=Role.FIXTURE, material=Material.WOOD_BIRCH)
.constrain("l2_bridge?conn0_rev", "base?l2_2", 'Plane')
.constrain("l2_bridge?conn1_rev", "base?l3_1", 'Plane')
)
if with_root_joint:
for name in ["l1", "l2", "l3", "r1", "r2", "r3"]:
result.addS(
self.root_joint.assembly(), name=name,
role=Role.PARENT,
material=Material.PLASTIC_PLA)
self.add_root_joint_constraint(result, "base", name, name)
result.solve()
return result

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@ -1,130 +0,0 @@
import unittest
import cadquery as Cq
import nhf.touhou.houjuu_nue as M
import nhf.touhou.houjuu_nue.joints as MJ
import nhf.touhou.houjuu_nue.electronics as ME
from nhf.checks import pairwise_intersection
class TestElectronics(unittest.TestCase):
def test_actuator_length(self):
self.assertAlmostEqual(
ME.LINEAR_ACTUATOR_50.conn_length, 103.9
)
self.assertAlmostEqual(
ME.LINEAR_ACTUATOR_30.conn_length, 83.9
)
self.assertAlmostEqual(
ME.LINEAR_ACTUATOR_10.conn_length, 64.5
)
self.assertAlmostEqual(
ME.LINEAR_ACTUATOR_21.conn_length, 76.0
)
def test_flexor(self):
flexor = ME.Flexor(
motion_span=60,
)
self.assertAlmostEqual(
flexor.target_length_at_angle(0),
flexor.actuator.stroke_length + flexor.actuator.conn_length)
self.assertAlmostEqual(
flexor.target_length_at_angle(flexor.motion_span),
flexor.actuator.conn_length)
class TestJoints(unittest.TestCase):
def test_shoulder_collision_of_torsion_joint(self):
j = MJ.ShoulderJoint()
assembly = j.torsion_joint.rider_track_assembly()
self.assertEqual(pairwise_intersection(assembly), [])
def test_shoulder_collision_0(self):
j = MJ.ShoulderJoint()
assembly = j.assembly()
self.assertEqual(pairwise_intersection(assembly), [])
def test_shoulder_align(self):
j = MJ.ShoulderJoint()
a = j.assembly()
l_t_c0 = a.get_abs_location("parent_top/lip?conn0")
l_b_c0 = a.get_abs_location("parent_bot/lip?conn0")
v = l_t_c0 - l_b_c0
self.assertAlmostEqual(v.x, 0)
self.assertAlmostEqual(v.y, 0)
def test_shoulder_joint_dist(self):
"""
Tests the arm radius
"""
j = MJ.ShoulderJoint()
for deflection in [0, 40, j.angle_max_deflection]:
with self.subTest(deflection=deflection):
a = j.assembly(deflection=deflection)
# Axle
o = a.get_abs_location("parent_top/track?spring")
l_c1 = a.get_abs_location("parent_top/lip?conn0")
l_c2= a.get_abs_location("parent_top/lip?conn1")
v_c = 0.5 * ((l_c1 - o) + (l_c2 - o))
v_c.z = 0
self.assertAlmostEqual(v_c.Length, j.parent_lip_ext)
def test_disk_collision_0(self):
j = MJ.DiskJoint()
assembly = j.assembly(angle=0)
self.assertEqual(pairwise_intersection(assembly), [])
def test_disk_collision_mid(self):
j = MJ.DiskJoint()
assembly = j.assembly(angle=j.movement_angle / 2)
self.assertEqual(pairwise_intersection(assembly), [])
def test_disk_collision_max(self):
j = MJ.DiskJoint()
assembly = j.assembly(angle=j.movement_angle)
self.assertEqual(pairwise_intersection(assembly), [])
def test_elbow_joint_dist(self):
"""
Tests the arm radius
"""
j = MJ.ElbowJoint()
for angle in [0, 10, 20, j.disk_joint.movement_angle]:
with self.subTest(angle=angle):
a = j.assembly(angle=angle)
o = a.get_abs_location("child/disk?mate_bot")
l_c1 = a.get_abs_location("child/lip?conn_top0")
l_c2 = a.get_abs_location("child/lip?conn_bot0")
v_c = 0.5 * ((l_c1 - o) + (l_c2 - o))
v_c.z = 0
self.assertAlmostEqual(v_c.Length, j.child_arm_radius)
l_p1 = a.get_abs_location("parent_upper/lip?conn_top0")
l_p2 = a.get_abs_location("parent_upper/lip?conn_bot0")
v_p = 0.5 * ((l_p1 - o) + (l_p2 - o))
v_p.z = 0
self.assertAlmostEqual(v_p.Length, j.parent_arm_radius)
class Test(unittest.TestCase):
def test_hs_joint_parent(self):
p = M.Parameters()
obj = p.harness.hs_joint_parent()
self.assertIsInstance(obj.val().solids(), Cq.Solid, msg="H-S joint must be in one piece")
def test_wings_assembly(self):
p = M.Parameters()
p.wings_harness_assembly()
def test_trident_assembly(self):
p = M.Parameters()
assembly = p.trident.assembly()
bbox = assembly.toCompound().BoundingBox()
length = bbox.zlen
self.assertGreater(length, 1300)
self.assertLess(length, 1700)
#def test_assemblies(self):
# p = M.Parameters()
# p.check_all()
if __name__ == '__main__':
unittest.main()

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@ -1,88 +0,0 @@
import math
from dataclasses import dataclass, field
import cadquery as Cq
from nhf import Material, Role
from nhf.parts.handle import Handle, BayonetMount
from nhf.build import Model, target, assembly
import nhf.utils
@dataclass
class Trident(Model):
handle: Handle = field(default_factory=lambda: Handle(
diam=38,
diam_inner=38-2 * 25.4/8,
diam_connector_internal=18,
simplify_geometry=False,
mount=BayonetMount(n_pin=3),
))
terminal_height: float = 80
terminal_hole_diam: float = 24
terminal_bottom_thickness: float = 10
segment_length: float = 24 * 25.4
@target(name="handle-connector")
def handle_connector(self):
return self.handle.connector()
@target(name="handle-insertion")
def handle_insertion(self):
return self.handle.insertion()
@target(name="proto-handle-terminal-connector", prototype=True)
def proto_handle_connector(self):
return self.handle.one_side_connector(height=15)
@target(name="handle-terminal-connector")
def handle_terminal_connector(self):
result = self.handle.one_side_connector(height=self.terminal_height)
#result.faces("<Z").circle(radius=25/2).cutThruAll()
h = self.terminal_height + self.handle.insertion_length - self.terminal_bottom_thickness
result = result.faces(">Z").hole(self.terminal_hole_diam, depth=h)
return result
@assembly()
def assembly(self):
def segment():
return self.handle.segment(self.segment_length)
terminal = (
self.handle
.one_side_connector(height=self.terminal_height)
.faces(">Z")
.hole(15, self.terminal_height + self.handle.insertion_length - 10)
)
mat_c = Material.PLASTIC_PLA
mat_i = Material.RESIN_TOUGH_1500
mat_s = Material.ACRYLIC_BLACK
role_i = Role.CONNECTION
role_c = Role.CONNECTION
role_s = Role.STRUCTURE
a = (
Cq.Assembly()
.addS(self.handle.insertion(), name="i0",
material=mat_i, role=role_i)
.constrain("i0", "Fixed")
.addS(segment(), name="s1",
material=mat_s, role=role_s)
.constrain("i0?rim", "s1?mate1", "Plane", param=0)
.addS(self.handle.insertion(), name="i1",
material=mat_i, role=role_i)
.addS(self.handle.connector(), name="c1",
material=mat_c, role=role_c)
.addS(self.handle.insertion(), name="i2",
material=mat_i, role=role_i)
.constrain("s1?mate2", "i1?rim", "Plane", param=0)
.constrain("i1?mate", "c1?mate1", "Plane")
.constrain("i2?mate", "c1?mate2", "Plane")
.addS(segment(), name="s2",
material=mat_s, role=role_s)
.constrain("i2?rim", "s2?mate1", "Plane", param=0)
.addS(self.handle.insertion(), name="i3",
material=mat_i, role=role_i)
.constrain("s2?mate2", "i3?rim", "Plane", param=0)
.addS(self.handle.one_side_connector(), name="head",
material=mat_c, role=role_c)
.constrain("i3?mate", "head?mate", "Plane")
.addS(terminal, name="terminal",
material=mat_c, role=role_c)
.constrain("i0?mate", "terminal?mate", "Plane")
)
return a.solve()

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