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notebook_casera/README.md
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notebook_casera/README.md
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# notebook_casera
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Cosas de mi proyecto de notebook casera
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Por ahora:
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* modelo.py es el modelo, hecho en CadQuery
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* Los archivos STL son lo que el modelo genera
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notebook_casera/modelo.py
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notebook_casera/modelo.py
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import cadquery2 as cq
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from cadquery2 import exporters
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from math import floor, atan, pi
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# Naming convention
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# _l means Y
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# _w means X
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# _h means Z
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shell_t = 2 # Shell thickness
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front_h = 25 # height at the front (near user)
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back_h = 40 # height at the back (away from user)
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width = 290 # width of the whole thing
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fillet_s = 4 # Fillet of case sides
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kbd_base_l = 150 # length of the front half of the case
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screen_base_l = 100 # length of the back half of the case
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kbd_angle = atan((back_h - front_h) / kbd_base_l) * 180 / pi
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print("kbd_angle=", kbd_angle)
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# Added an extra 1mm on each direction for tolerance to make sure it slots in
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kbd_w = 202 # width of the keyboard itself
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kbd_l = 127 # "length" of the keyboard
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kbd_h = 4 # depth of the keyboard holder cutoff
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kbd_fillet = 10 # width of the kbd corner fillet
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# battery dimensions (mx7)
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bat_w = 60
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bat_l = 140
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bat_h = 22
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# width, length VISIBLE WITHIN THE BEZEL
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screen_w = 223
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screen_l = 57
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screen_left_margin = 10 # Distance from the left of the case to screen cutout
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# width, length, height INCLUDING_BEZEL
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display_w = 233
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display_l = 65
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display_h = 5
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# Distance from the left of the case to display end (7 is bezel width on that side)
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display_left_margin = screen_left_margin - 7
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# Distance from the right of the case to display end
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display_right_margin = width - display_left_margin - display_w
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# Distance from the top of the case to display top
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display_top_margin = (screen_base_l - display_l) / 2
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display_bottom_margin = display_top_margin # Symmetrical
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kbd_cutout = (
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cq.Sketch().trapezoid(kbd_w, kbd_l, 90).reset().vertices().fillet(kbd_fillet)
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)
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bat_holder_top = (
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cq.Sketch()
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.trapezoid(bat_w + 2 * shell_t, bat_h + 2 * shell_t, 90)
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.trapezoid(bat_w, bat_h, 90, mode="s")
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.trapezoid(bat_w + 10, bat_h - 10, 90, mode="s")
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)
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# Base to hold (magnetically?) the keyboard (half the case)
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kbd_base = (
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cq.Workplane("left")
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.lineTo(0, kbd_base_l)
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.lineTo(front_h, kbd_base_l)
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.lineTo(back_h, 0)
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.close()
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.extrude(width)
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.edges("+Z")
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.fillet(fillet_s)
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.edges("+Y")
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.fillet(fillet_s)
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# Cut kbd holder area from top face
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.faces(">Z")
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.workplane(centerOption="CenterOfBoundBox")
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.center((screen_w - width) / 2 + screen_left_margin, 0)
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.placeSketch(kbd_cutout)
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.cutBlind(-kbd_h)
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# Make it hollow
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.faces("<Y")
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.shell(-shell_t)
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# Add battery holder
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.faces("<Y")
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.workplane(centerOption="CenterOfBoundBox", offset=-1)
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# The final constants are fudging because it impinges on the surface
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.center(
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-(width - bat_w - 2 * shell_t) / 2 + 1,
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(back_h - bat_h - 2 * shell_t) / 2 - 0.25,
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)
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.transformed(rotate=cq.Vector(-kbd_angle, 0, 0))
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.placeSketch(bat_holder_top)
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# The 3 is fudging so the bottom of the holder doesn't
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# impinge on the bottom face
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.extrude(-(bat_l - 3 * fillet_s))
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)
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# Slots for ventilation, applied at the bottom of the screen base
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ventilacion = (
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cq.Sketch() # slots are 3mm separated 5
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.rarray(8, 6, floor(width / 9), 1)
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.trapezoid(3, 0.8 * screen_base_l, 90, mode="a")
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.reset()
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.vertices()
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.fillet(1)
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)
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screen_cutout = (
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cq.Sketch().trapezoid(screen_w, screen_l, 90, mode="a").reset().vertices().fillet(1)
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)
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shelf_cutout = (
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cq.Sketch()
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.trapezoid(width - 2 * shell_t, screen_l, 90, mode="a")
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.reset()
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.vertices()
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.fillet(1)
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)
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screen_lateral_stop = (
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cq.Sketch()
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.rarray(display_l - 2 * shell_t, 1, 2, 1)
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.trapezoid(2 * shell_t, display_h + 2 * shell_t, 90, mode="a")
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)
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screen_vertical_stop = cq.Sketch().trapezoid(width, 2 * shell_t, 90, mode="a")
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# Holder for the screen (other half of the case)
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screen_base = (
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# Basic filleted box shape
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cq.Workplane("bottom")
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.lineTo(-width, 0)
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.lineTo(-width, back_h)
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.lineTo(0, back_h)
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.close()
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.extrude(screen_base_l)
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.edges("|Y and <Z")
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.fillet(fillet_s)
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.faces(">Y")
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.shell(-shell_t)
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# Account for outer shell thickness in offset
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.faces(">Z")
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.workplane(offset=-display_h - shell_t)
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# Add friction shelve for screen assembly
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.lineTo(-width, 0)
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.lineTo(-width, -screen_base_l)
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.lineTo(0, -screen_base_l)
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.close()
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.extrude(-shell_t)
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# Cutout visible screen area from top face
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.faces(">Z")
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.workplane(centerOption="CenterOfBoundBox")
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.center((width - screen_w) / 2 - screen_left_margin, 0)
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.placeSketch(screen_cutout)
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.cutBlind(-shell_t)
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# Cut screen "shelf" to allow for cable routing
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.faces(">Z")
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.workplane(centerOption="CenterOfBoundBox", offset=-display_h - shell_t)
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.placeSketch(shelf_cutout)
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.cutBlind(-shell_t)
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# Stop the screen from sliding back and forward
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.faces(">Y")
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.workplane(centerOption="CenterOfBoundBox")
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.center(0, back_h / 2 - display_h - shell_t)
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.placeSketch(screen_vertical_stop)
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.extrude(-display_bottom_margin)
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.faces("<Y")
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.workplane(centerOption="CenterOfBoundBox")
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.center(0, back_h / 2 - display_h - shell_t)
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.placeSketch(screen_vertical_stop)
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.extrude(-display_top_margin)
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# Stop the screen from sliding left and right
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.faces(">X")
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.workplane(centerOption="CenterOfBoundBox")
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.center(0, back_h / 2 - display_h - shell_t)
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.placeSketch(screen_lateral_stop)
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.extrude(-display_left_margin)
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.faces("<X")
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.workplane(centerOption="CenterOfBoundBox")
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.center(0, back_h / 2 - display_h - shell_t)
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.placeSketch(screen_lateral_stop)
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.extrude(-display_right_margin)
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# Place ventilation grid in bottom face
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.faces("<Z")
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.workplane(centerOption="CenterOfBoundBox")
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.placeSketch(ventilacion)
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.cutBlind(-5)
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)
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exporters.export(screen_base, "screen_base.stl")
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exporters.export(kbd_base, "kbd_base.stl")
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