def xulaconnector():
screw_xuout = 2.5
screw_xuin = 1.5
screw_toph = 1
offset = 5
length = offset + THICK_WALL
# XULA2 is attached to the top with two screws
screw_xula = hscrew(screw_xuout, screw_toph, screw_xuin, length)
screws_xula = screw_xula + right(58)(screw_xula)
screws_xula += up(48.8)(screws_xula)
xula_base = screws_xula
# Raspberry connector xula2
rsp_cnctr = cube([58 - 2 * (screw_xuin + THICK_WALL * 0.5), length, 6])
xula_base += translate([screw_xuin + THICK_WALL * 0.5, -length,
-3 + 48.8])(hole()(rsp_cnctr))
# add stickit connector
top_height = 4 # top height screw in mm
top_r = 3.5 # top r screw in mm
shaft_r = 2
screw_stick = hscrew(top_r, top_height, shaft_r, length)
screws_stick = screw_stick + up(15)(screw_stick)
# stickit length 49.6-1.28-2-2
# 15.5+1.5+1.2-1.5
xula_base += translate(
[-(49.6 - 1.28 - 2 - 2) - 8, 0,
15.5 + 1.5 + 1.2 - 1.5 - 2.7])(screws_stick)
xula_base += translate([-60, -2, -8])(cube([123, 2, 61]))
xula_base = up(THICK_WALL + 11)(xula_base)
# add down connector
base_exit = cube([58 + 2 * screw_xuin + THICK_WALL, 16, THICK_WALL])
base_exit += hole()(translate(
[screw_xuin + THICK_WALL * 0.5, THICK_WALL,
0])(cube([58 - 2 * (screw_xuin + THICK_WALL * 0.5), 12, THICK_WALL])))
xula_base += back(16)(base_exit)
return xula_base
def fibcube():
outside = cube([m.fibcube_side, m.fibcube_side, m.fibcube_height], center=False)
top = translate(
[
m.fibcube_wall + m.fibcube_extra / 2,
m.fibcube_wall + m.fibcube_extra / 2,
m.fibcube_height,
]
)(
cube(
[
m.fibcube_plopp - m.fibcube_extra,
m.fibcube_plopp - m.fibcube_extra,
m.fibcube_top_margin,
],
center=False,
)
)
inside = translate([m.fibcube_wall, m.fibcube_wall, -m.fibcube_wall])(
cube([m.fibcube_plopp, m.fibcube_plopp, m.fibcube_height], center=False)
)
fc = outside + top
fc = fc + hole()(inside)
return fc
def screw(r_head, h_head, r_shaft, length, thick=THICK_WALL):
"""screw
create a hole so a screw can be screwd into the box
the center of the screw is aligned with the center of the coordinate system
the screw is oriented as flipped T, i.e. it is standing on its head.
screws are generated with an enclosing of THICK_WALL mm
the interior is ensured via the hole function
it is assumed that r_head > r_shaft
The height of the head is h_head, an additional r_head-r_r_shaft is added
to ensure printablity.
:param r_head: radius of the head of the screw [mm]
:param h_head: height of the head of the screw [mm]
:param r_shaft: radius of the shaft of the screw [mm]
:param length: desired length of the screw [mm]
"""
h_shaft = length - h_head - (r_head - r_shaft)
head = cylinder(h=h_head, r=r_head, segments=30)
# 45 degrees cone for printability
cone = up(h_head)(cylinder(h=r_head - r_shaft,
r1=r_head,
r2=r_shaft,
segments=30))
shaft = up(h_head + (r_head - r_shaft))(cylinder(h=h_shaft,
r=r_shaft,
segments=30))
inner = head + cone + shaft
screw = cylinder(h=length, r=r_head + thick) - hole()(inner)
return screw
def createlogo():
"""createlogo
Openscad cannot handle the Storm font. To mitigate, a vector image of the
storm font is converted to PNG via Inkscape. The PNG image is linearly
extruded and converted to a STL.
This STL is imported by this function, to create the logo.
"""
# TODO: move Python converter for logo to here
# LOGO bounding box x = 234 , y = 26, z = 1
# scaled to x = 120, y = 13
x_bound = 120 + THICK_WALL * 2
y_bound = 13 + THICK_WALL * 2
# TODO: should throw error !! you removed logo
logo = scale([0.5, 0.5, 1])(import_stl('hexastorm.stl'))
logo = None
# openscad cannot handle minkowski on hexastorm logo
# logo_mink = up(1)(minkowski()(cylinder(r=0.5, h=1), logo))
result = translate([-0.5 * x_bound, -0.5 * y_bound, 0])(cube(
[x_bound, y_bound, 1])) - hole()(mirror([0, 1, 0])(logo))
result = scale([1, 1, HEIGHT_TOP - THICK_WALL
])(translate([0.5 * x_bound, 0.5 * y_bound, 0])(result))
result = up(HEIGHT_TOP - THICK_WALL)(cube([x_bound, y_bound, 1]))
# TODO: Openscad can create a preview but does not render the logo,
# at the moment we resort to
# modiefs in blender
return result
def slot(r_head, h_head, r_shaft, width, height):
"""slot
openscad styled vertically oriented printable slot
origin formed by the center of left circle
:param r_head: the radius of the top of the screw, [mm]
:param h_head: the height of the top of the screw, [mm]
:param r_shaft: the radius of the shaft of the screw, [mm]
:param width: the width of the slot, [mm]
:param height: the height of the slot, [mm]
"""
h_shaft = height - h_head - (r_head - r_shaft)
head = cylinder(h=h_head, r=r_head, segments=30)
# 45 degrees cone for printability
cone = up(h_head)(cylinder(h=r_head - r_shaft,
r1=r_head,
r2=r_shaft,
segments=30))
shaft = up(h_head + (r_head - r_shaft))(cylinder(h=h_shaft,
r=r_shaft,
segments=30))
cyl = head + cone + shaft
inner = hull()(cyl, right(width)(cyl))
cyl = cylinder(h=height, r=r_head + THICK_WALL)
outer = hull()(cyl, right(width)(cyl))
slot = outer - hole()(inner)
return slot
def laserbase(laserheight):
"""laserabase
creates the basis for the laser with ventilation wall
The laserbase is in the XY plane at quadrant 1.
One corner is at the origin. The width is parallel to the x-axis.
The laser was provided by Odic Force, productid OFL510-1.
The padheight is laser height- 16.5 The laserbundle travels in
the +x direction and departs from the center, that is 15 mm.
param: laserheight: the desired height of the laser
"""
# The laser tube is at 8 mm from bottom.
# The laser tube has a diameter of 17 mm
# The laser is at 8 + 17 * 0.5 - 1 = 16.5 mm (shim of 1 mm needed)
# The laser base is 30x60 mm, which was made
# 30x75 mm to make room for the ventilator
# PARAMETERS
height = laserheight - 15.5 # [mm],
xdisp = 48.5 # [mm], x-displacement screws
ydisp = 16 # [mm], y-displacement screws
r_shaft = 2 # [mm], shaft radius screws
h_head = 5 # [mm], height shaft head
r_head = 3.5 # [mm], top radius screws
tspile = 4 # [mm], y-thickness ventilation spile
hspile = 25 # [mm], height ventilation spile
length = 75 # [mm], x-direction length laser
width = 30 # [mm], y-direction width laser
screw_offst = 7 # [mm], screw offset +x-edge
# MINIMAL MATERIAL BASE
screws = screw(r_head, h_head, r_shaft, height) + right(xdisp)(screw(
r_head, h_head, r_shaft, height))
spiegel = forward(ydisp / 2)(mirror([0, 1, 0])(back(ydisp / 2)(screws)))
screws += spiegel
base = translate([length - xdisp - screw_offst, (width - ydisp) / 2,
0])(screws)
# ventilation wall
# spile
spile = up(height)(cube([THICK_WALL, tspile, hspile]))
nofspiles = ceil((width) / (tspile * 2))
# shift base
base = right(THICK_WALL)(base)
# add wall
base += cube([THICK_WALL, width, HEIGHT_WALL])
# create pockets
for i in range(0, nofspiles):
base -= hole()(forward(i * 2 * tspile + THICK_WALL)(spile))
return base
def panelmountmini():
"""panelmount
panel mount for panel Mount cable -B to Mini-B cable
http://adafru.it/936
"""
base = cube([40, 20, THICK_WALL], center=True)
# screw hole
screw_hole = cylinder(r=1.75, h=THICK_WALL * 2, center=True, segments=30)
# create two holes + hole usb cube
base -= hole()(left(14)(screw_hole) + right(14)(screw_hole) +
cube([17.5, 12, THICK_WALL * 2], center=True))
# change orientation
base = right(0.5 * THICK_WALL)(rotate([0, 90, 0])(rotate([0, 0,
90])(base)))
return base
def enclosure():
enc_outer = cube(
size=[m.enclosure_width, m.enclosure_depth, m.enclosure_height], center=True
)
enc_hole = up(m.wall_thickness)(
cube(
size=[
m.enclosure_width - m.wall_thickness,
m.enclosure_depth - m.wall_thickness,
m.enclosure_height,
],
center=True,
)
)
enclosure = enc_outer + hole()(enc_hole)
enclosure = part()(enclosure)
enclosure = up(m.enclosure_height / 2)(enclosure)
return enclosure
def hscrew(head_r, head_height, shaft_r, length):
"""horizontal screw
a horizontal screw consists out of three parts
* a cylinder in the wall
* possible a continuation of the head insert
* shaft piece
algorithm ensures it is printable
param head_height: height head screw
param head_r: radius head screw
param shaft_r: radius shaft screw
param lenght: lenght screw
"""
# cylinder in the wall
if head_height > THICK_WALL:
shift = head_height - THICK_WALL
cyl_wall = cylinder(h=THICK_WALL, r=head_r + THICK_WALL, segments=30)
cyl_mid = up(THICK_WALL)(cylinder(h=shift,
r1=head_r + shift + THICK_WALL,
r2=head_r + THICK_WALL,
segments=30))
hscrew = cyl_mid + cyl_wall
else:
hscrew = cylinder(h=head_height, r=head_r + THICK_WALL, segments=30)
# two cases:
if length - head_height > head_height:
shift = length - THICK_WALL
cyl_shaft = up(head_height)(cylinder(h=shift,
r1=shaft_r + shift + THICK_WALL,
r2=shaft_r + THICK_WALL,
segments=30))
else:
cyl_shaft = up(head_height)(cylinder(h=length - head_height,
r1=head_r + THICK_WALL,
r2=shaft_r + THICK_WALL,
segments=30))
hscrew += cyl_shaft
hscrew = rotate([90, 0, 0])(hscrew)
# gravity only one direction --> minimize in this direction
# shaft
field = cube([
2 * (shaft_r + THICK_WALL), length - head_height,
length + 2 * shaft_r + THICK_WALL
])
field = translate([-shaft_r - THICK_WALL, -length,
-(length + shaft_r)])(field)
sscrew = hscrew * field
# top
if head_height > THICK_WALL:
field = cube([
2 * (head_r + THICK_WALL), head_height,
length + 2 * head_r + THICK_WALL
])
field = translate(
[-head_r - THICK_WALL, -head_height, -(length + head_r)])
(field)
tscrew = hscrew * field
else:
tscrew = rotate([90, 0, 0])(cylinder(h=head_height,
r=head_r + THICK_WALL,
segments=30))
hscrew = tscrew + sscrew
cyl_top = down(0.1)(cylinder(h=head_height + 0.1, r=head_r, segments=30))
cyl_shaft = up(head_height - 0.1)(cylinder(h=length - head_height + 0.1,
r=shaft_r,
segments=30))
interior = rotate([90, 0, 0])(cyl_shaft + cyl_top)
omg = hscrew - hole()(interior)
# OMG HOLE is buggy; hscrew-=hole()(interior) does not always work
return omg
def mirrormount(down, laserheight):
"""mirrormount
A 25 mm x 25 mm square and 2 mm thick first sided mirror is used to refract
the ray downward or upward. The thickness is in the +x-direction.
This mirror is tilted at a 45 degrees and is positioned by a holder.
The holder is put in place via two pillars.
A photodiode mount is placed into these pillars to detect the laser motion.
It is important that the photodiode is at the correct height
The photodiode_height is LASER_HEIGHT-2.5, to ensure the laser hits the
photodiode at its center.
:param down: if true downward refraction, if false upward refraction
:param laserheight: height laser bundle, [mm]
"""
width_mirror = 25 # [mm]
# thickness y+ pillar, y- pillar is insert+THICK_wall
tpillar_left = 14 # [mm]
insert_mirror = 5 # [mm]
thick_mirror = 2 # [mm]
# height_mirror < photodiode_height
height_mirror = laserheight - 6 # [mm]
# 4.5 determined via felix printed box
photodiode_height = laserheight - 4.5 # [mm]
cable_guide = 2 # [mm]
# sensor width with cables is 5.6 (measurement @diode)
sensor_width = 2 # [mm]
# sensor height is 4 (measurement @ photodiode)
sensor_height = 4.5 # [mm]
sensor_insert = 2 # [mm] diode thickness i 2 @ measured
# margin is needed for FFF printer
margin = 0.5 # [mm]
# defines the thickness of the holder
thick = 1.3 # [mm]
# offset constraint set by upward proj. due to cable collision possibility
offset = 19 # [mm] offset sensor pole
x_width = 0.5 * sqrt(2) * (thick_mirror + margin + 2 * thick)
# TODO: xbound seems to be an y_bound
x_bound = 0.5 * sqrt(2) * (2 * thick + width_mirror + margin) + x_width
y_bound = offset + THICK_WALL + sensor_insert
holder = cube([
thick_mirror + margin + 2 * thick,
light_hole + THICK_WALL + insert_mirror + tpillar_left,
width_mirror + margin + 2 * thick
])
holder_inner = translate([thick, 0, thick])(cube([
thick_mirror + margin, light_hole + tpillar_left + insert_mirror,
width_mirror + margin
]))
# the holder can contain left over of filament.
# To remove these left over a cleaning hole is needed.
holder_inner += translate([thick, 0, thick + width_mirror + margin])(cube(
[thick_mirror + margin, tpillar_left - THICK_WALL, thick]))
holder -= hole()(holder_inner)
# up mirror
holder = up(height_mirror)(rotate([0, 45, 0])(holder))
# pillars
# light exit has a width of light_hole
# pillars are next to this exit point and have a width of tpillar_left,
# and THICK_WALL + insert_mirror
mount_mirror = cube([
x_width, light_hole + tpillar_left + THICK_WALL + insert_mirror,
height_mirror
])
mount_mirror += holder
# create pocket for light 2x is for certainty
mount_mirror -= forward(tpillar_left)(cube(
[2 * width_mirror, light_hole, 2 * width_mirror]))
if not down:
mount_mirror = right(x_bound)(mirror([1, 0, 0])(mount_mirror))
# add mount photodiode
# the photodiode is at height photodiode_height mm
# the cable guides are cable_guide mm thick, the pins of the photodiode
# are sensor width displaced, the photodiode is sensor height tall
# the photodiode sensor insert is sensor_insert, the wall between light
# exit and sensor is fixed at 1 mm, kept small to get maximum out of light
# path. The top has a three time thickness, to create a connection between
# mirror and pole
enclosure = cube([
THICK_WALL + sensor_insert,
cable_guide * 2 + sensor_width + THICK_WALL + 1,
sensor_height + photodiode_height + 2 * THICK_WALL
])
photodiode = cube([
sensor_insert + THICK_WALL, cable_guide * 2 + sensor_width,
sensor_height
])
# substract central pillar
photodiode -= translate([0, cable_guide, 0
])(cube([THICK_WALL, sensor_width,
sensor_height]))
# combine pole with photodiode housing
pole = enclosure - hole()(translate([0, 1, photodiode_height])(photodiode))
combined = mount_mirror + translate([offset, tpillar_left + light_hole, 0
])(pole)
# a trafo is executed to simplify positioning;
# light should be centered at y=0
combined = translate([y_bound, tpillar_left + 0.5 * light_hole,
0])(mirror([1, 0, 0])(mirror([0, 1, 0])(combined)))
# add tie-wrap
# TODO: remove custom parameters
fasten = translate([9, tpillar_left + 9,
0])(cable_fasten(TIE_HEIGHT, TIE_WIDTH, THICK_WALL,
True))
combined += fasten
return combined
def hole(self, sb: "SolidBuilder") -> "SolidBuilder":
self._oso = self._oso - hole()(sb._oso)
return self