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dactyl.clj
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dactyl.clj
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(ns dactyl-keyboard.dactyl
(:refer-clojure :exclude [use import])
(:require [clojure.core.matrix :refer [array matrix mmul]]
[scad-clj.scad :refer :all]
[scad-clj.model :refer :all]
[unicode-math.core :refer :all]))
(defn deg2rad [degrees]
(* (/ degrees 180) pi))
;;;;;;;;;;;;;;;;;;;;;;
;; Shape parameters ;;
;;;;;;;;;;;;;;;;;;;;;;
(def nrows 5)
(def ncols 6)
(def α (/ π 12)) ; curvature of the columns
(def β (/ π 36)) ; curvature of the rows
(def centerrow (- nrows 3)) ; controls front-back tilt
(def centercol 2) ; controls left-right tilt / tenting (higher number is more tenting)
(def tenting-angle (/ π 12)) ; or, change this for more precise tenting control
(def column-style
(if (> nrows 5) :orthographic :standard)) ; options include :standard, :orthographic, and :fixed
; (def column-style :fixed)
(defn column-offset [column] (cond
(= column 2) [0 2.82 -4.5]
(>= column 4) [0 -12 5.64] ; original [0 -5.8 5.64]
:else [0 0 0]))
(def thumb-offsets [6 -3 7])
(def keyboard-z-offset 16) ; controls overall height; original=9 with centercol=3; use 16 for centercol=2
(def extra-width 2.5) ; extra space between the base of keys; original= 2
(def extra-height 1.0) ; original= 0.5
(def wall-z-offset -15) ; length of the first downward-sloping part of the wall (negative)
(def wall-xy-offset 5) ; offset in the x and/or y direction for the first downward-sloping part of the wall (negative)
(def wall-thickness 2) ; wall thickness parameter; originally 5
;; Settings for column-style == :fixed
;; The defaults roughly match Maltron settings
;; http://patentimages.storage.googleapis.com/EP0219944A2/imgf0002.png
;; Fixed-z overrides the z portion of the column ofsets above.
;; NOTE: THIS DOESN'T WORK QUITE LIKE I'D HOPED.
(def fixed-angles [(deg2rad 10) (deg2rad 10) 0 0 0 (deg2rad -15) (deg2rad -15)])
(def fixed-x [-41.5 -22.5 0 20.3 41.4 65.5 89.6]) ; relative to the middle finger
(def fixed-z [12.1 8.3 0 5 10.7 14.5 17.5])
(def fixed-tenting (deg2rad 0))
;;;;;;;;;;;;;;;;;;;;;;;
;; General variables ;;
;;;;;;;;;;;;;;;;;;;;;;;
(def lastrow (dec nrows))
(def cornerrow (dec lastrow))
(def lastcol (dec ncols))
;;;;;;;;;;;;;;;;;
;; Switch Hole ;;
;;;;;;;;;;;;;;;;;
(def keyswitch-height 14.4) ;; Was 14.1, then 14.25
(def keyswitch-width 14.4)
(def sa-profile-key-height 12.7)
(def plate-thickness 4)
(def mount-width (+ keyswitch-width 3))
(def mount-height (+ keyswitch-height 3))
(def single-plate
(let [top-wall (->> (cube (+ keyswitch-width 3) 1.5 plate-thickness)
(translate [0
(+ (/ 1.5 2) (/ keyswitch-height 2))
(/ plate-thickness 2)]))
left-wall (->> (cube 1.5 (+ keyswitch-height 3) plate-thickness)
(translate [(+ (/ 1.5 2) (/ keyswitch-width 2))
0
(/ plate-thickness 2)]))
side-nub (->> (binding [*fn* 30] (cylinder 1 2.75))
(rotate (/ π 2) [1 0 0])
(translate [(+ (/ keyswitch-width 2)) 0 1])
(hull (->> (cube 1.5 2.75 plate-thickness)
(translate [(+ (/ 1.5 2) (/ keyswitch-width 2))
0
(/ plate-thickness 2)]))))
plate-half (union top-wall left-wall (with-fn 100 side-nub))]
(union plate-half
(->> plate-half
(mirror [1 0 0])
(mirror [0 1 0])))))
;;;;;;;;;;;;;;;;
;; SA Keycaps ;;
;;;;;;;;;;;;;;;;
(def sa-length 18.25)
(def sa-double-length 37.5)
(def sa-cap {1 (let [bl2 (/ 18.5 2)
m (/ 17 2)
key-cap (hull (->> (polygon [[bl2 bl2] [bl2 (- bl2)] [(- bl2) (- bl2)] [(- bl2) bl2]])
(extrude-linear {:height 0.1 :twist 0 :convexity 0})
(translate [0 0 0.05]))
(->> (polygon [[m m] [m (- m)] [(- m) (- m)] [(- m) m]])
(extrude-linear {:height 0.1 :twist 0 :convexity 0})
(translate [0 0 6]))
(->> (polygon [[6 6] [6 -6] [-6 -6] [-6 6]])
(extrude-linear {:height 0.1 :twist 0 :convexity 0})
(translate [0 0 12])))]
(->> key-cap
(translate [0 0 (+ 5 plate-thickness)])
(color [220/255 163/255 163/255 1])))
2 (let [bl2 (/ sa-double-length 2)
bw2 (/ 18.25 2)
key-cap (hull (->> (polygon [[bw2 bl2] [bw2 (- bl2)] [(- bw2) (- bl2)] [(- bw2) bl2]])
(extrude-linear {:height 0.1 :twist 0 :convexity 0})
(translate [0 0 0.05]))
(->> (polygon [[6 16] [6 -16] [-6 -16] [-6 16]])
(extrude-linear {:height 0.1 :twist 0 :convexity 0})
(translate [0 0 12])))]
(->> key-cap
(translate [0 0 (+ 5 plate-thickness)])
(color [127/255 159/255 127/255 1])))
1.5 (let [bl2 (/ 18.25 2)
bw2 (/ 28 2)
key-cap (hull (->> (polygon [[bw2 bl2] [bw2 (- bl2)] [(- bw2) (- bl2)] [(- bw2) bl2]])
(extrude-linear {:height 0.1 :twist 0 :convexity 0})
(translate [0 0 0.05]))
(->> (polygon [[11 6] [-11 6] [-11 -6] [11 -6]])
(extrude-linear {:height 0.1 :twist 0 :convexity 0})
(translate [0 0 12])))]
(->> key-cap
(translate [0 0 (+ 5 plate-thickness)])
(color [240/255 223/255 175/255 1])))})
;;;;;;;;;;;;;;;;;;;;;;;;;
;; Placement Functions ;;
;;;;;;;;;;;;;;;;;;;;;;;;;
(def columns (range 0 ncols))
(def rows (range 0 nrows))
(def cap-top-height (+ plate-thickness sa-profile-key-height))
(def row-radius (+ (/ (/ (+ mount-height extra-height) 2)
(Math/sin (/ α 2)))
cap-top-height))
(def column-radius (+ (/ (/ (+ mount-width extra-width) 2)
(Math/sin (/ β 2)))
cap-top-height))
(def column-x-delta (+ -1 (- (* column-radius (Math/sin β)))))
(def column-base-angle (* β (- centercol 2)))
(defn apply-key-geometry [translate-fn rotate-x-fn rotate-y-fn column row shape]
(let [column-angle (* β (- centercol column))
placed-shape (->> shape
(translate-fn [0 0 (- row-radius)])
(rotate-x-fn (* α (- centerrow row)))
(translate-fn [0 0 row-radius])
(translate-fn [0 0 (- column-radius)])
(rotate-y-fn column-angle)
(translate-fn [0 0 column-radius])
(translate-fn (column-offset column)))
column-z-delta (* column-radius (- 1 (Math/cos column-angle)))
placed-shape-ortho (->> shape
(translate-fn [0 0 (- row-radius)])
(rotate-x-fn (* α (- centerrow row)))
(translate-fn [0 0 row-radius])
(rotate-y-fn column-angle)
(translate-fn [(- (* (- column centercol) column-x-delta)) 0 column-z-delta])
(translate-fn (column-offset column)))
placed-shape-fixed (->> shape
(rotate-y-fn (nth fixed-angles column))
(translate-fn [(nth fixed-x column) 0 (nth fixed-z column)])
(translate-fn [0 0 (- (+ row-radius (nth fixed-z column)))])
(rotate-x-fn (* α (- centerrow row)))
(translate-fn [0 0 (+ row-radius (nth fixed-z column))])
(rotate-y-fn fixed-tenting)
(translate-fn [0 (second (column-offset column)) 0])
)]
(->> (case column-style
:orthographic placed-shape-ortho
:fixed placed-shape-fixed
placed-shape)
(rotate-y-fn tenting-angle)
(translate-fn [0 0 keyboard-z-offset]))))
(defn key-place [column row shape]
(apply-key-geometry translate
(fn [angle obj] (rotate angle [1 0 0] obj))
(fn [angle obj] (rotate angle [0 1 0] obj))
column row shape))
(defn rotate-around-x [angle position]
(mmul
[[1 0 0]
[0 (Math/cos angle) (- (Math/sin angle))]
[0 (Math/sin angle) (Math/cos angle)]]
position))
(defn rotate-around-y [angle position]
(mmul
[[(Math/cos angle) 0 (Math/sin angle)]
[0 1 0]
[(- (Math/sin angle)) 0 (Math/cos angle)]]
position))
(defn key-position [column row position]
(apply-key-geometry (partial map +) rotate-around-x rotate-around-y column row position))
(def key-holes
(apply union
(for [column columns
row rows
:when (or (.contains [2 3] column)
(not= row lastrow))]
(->> single-plate
(key-place column row)))))
(def caps
(apply union
(for [column columns
row rows
:when (or (.contains [2 3] column)
(not= row lastrow))]
(->> (sa-cap (if (= column 5) 1 1))
(key-place column row)))))
; (pr (rotate-around-y π [10 0 1]))
; (pr (key-position 1 cornerrow [(/ mount-width 2) (- (/ mount-height 2)) 0]))
;;;;;;;;;;;;;;;;;;;;
;; Web Connectors ;;
;;;;;;;;;;;;;;;;;;;;
(def web-thickness 3.5)
(def post-size 0.1)
(def web-post (->> (cube post-size post-size web-thickness)
(translate [0 0 (+ (/ web-thickness -2)
plate-thickness)])))
(def post-adj (/ post-size 2))
(def web-post-tr (translate [(- (/ mount-width 2) post-adj) (- (/ mount-height 2) post-adj) 0] web-post))
(def web-post-tl (translate [(+ (/ mount-width -2) post-adj) (- (/ mount-height 2) post-adj) 0] web-post))
(def web-post-bl (translate [(+ (/ mount-width -2) post-adj) (+ (/ mount-height -2) post-adj) 0] web-post))
(def web-post-br (translate [(- (/ mount-width 2) post-adj) (+ (/ mount-height -2) post-adj) 0] web-post))
(defn triangle-hulls [& shapes]
(apply union
(map (partial apply hull)
(partition 3 1 shapes))))
(def connectors
(apply union
(concat
;; Row connections
(for [column (range 0 (dec ncols))
row (range 0 lastrow)]
(triangle-hulls
(key-place (inc column) row web-post-tl)
(key-place column row web-post-tr)
(key-place (inc column) row web-post-bl)
(key-place column row web-post-br)))
;; Column connections
(for [column columns
row (range 0 cornerrow)]
(triangle-hulls
(key-place column row web-post-bl)
(key-place column row web-post-br)
(key-place column (inc row) web-post-tl)
(key-place column (inc row) web-post-tr)))
;; Diagonal connections
(for [column (range 0 (dec ncols))
row (range 0 cornerrow)]
(triangle-hulls
(key-place column row web-post-br)
(key-place column (inc row) web-post-tr)
(key-place (inc column) row web-post-bl)
(key-place (inc column) (inc row) web-post-tl))))))
;;;;;;;;;;;;
;; Thumbs ;;
;;;;;;;;;;;;
(def thumborigin
(map + (key-position 1 cornerrow [(/ mount-width 2) (- (/ mount-height 2)) 0])
thumb-offsets))
; (pr thumborigin)
(defn thumb-tr-place [shape]
(->> shape
; (rotate (deg2rad 10) [1 0 0])
; (rotate (deg2rad -23) [0 1 0])
; (rotate (deg2rad -3) [0 0 1])
(rotate (deg2rad 10) [1 0 0])
(rotate (deg2rad -23) [0 1 0])
(rotate (deg2rad 10) [0 0 1])
(translate thumborigin)
(translate [-12 -16 3])
))
(defn thumb-tl-place [shape]
(->> shape
; (rotate (deg2rad 10) [1 0 0])
; (rotate (deg2rad -23) [0 1 0])
; (rotate (deg2rad -3) [0 0 1])
(rotate (deg2rad 10) [1 0 0])
(rotate (deg2rad -23) [0 1 0])
(rotate (deg2rad 10) [0 0 1])
(translate thumborigin)
(translate [-32 -15 -2])))
(defn thumb-mr-place [shape]
(->> shape
(rotate (deg2rad -6) [1 0 0])
(rotate (deg2rad -34) [0 1 0])
(rotate (deg2rad 48) [0 0 1])
(translate thumborigin)
(translate [-29 -40 -13])
))
(defn thumb-ml-place [shape]
(->> shape
(rotate (deg2rad 6) [1 0 0])
(rotate (deg2rad -34) [0 1 0])
(rotate (deg2rad 40) [0 0 1])
(translate thumborigin)
(translate [-51 -25 -12])))
(defn thumb-br-place [shape]
(->> shape
(rotate (deg2rad -16) [1 0 0])
(rotate (deg2rad -33) [0 1 0])
(rotate (deg2rad 54) [0 0 1])
(translate thumborigin)
(translate [-37.8 -55.3 -25.3])
))
(defn thumb-bl-place [shape]
(->> shape
(rotate (deg2rad -4) [1 0 0])
(rotate (deg2rad -35) [0 1 0])
(rotate (deg2rad 52) [0 0 1])
(translate thumborigin)
(translate [-56.3 -43.3 -23.5])
))
(defn thumb-1x-layout [shape]
(union
(thumb-mr-place shape)
(thumb-ml-place shape)
(thumb-br-place shape)
(thumb-bl-place shape)))
(defn thumb-15x-layout [shape]
(union
(thumb-tr-place shape)
(thumb-tl-place shape)))
(def larger-plate
(let [plate-height (/ (- sa-double-length mount-height) 3)
top-plate (->> (cube mount-width plate-height web-thickness)
(translate [0 (/ (+ plate-height mount-height) 2)
(- plate-thickness (/ web-thickness 2))]))
]
(union top-plate (mirror [0 1 0] top-plate))))
(def thumbcaps
(union
(thumb-1x-layout (sa-cap 1))
(thumb-15x-layout (rotate (/ π 2) [0 0 1] (sa-cap 1.5)))))
(def thumb
(union
(thumb-1x-layout single-plate)
(thumb-15x-layout single-plate)
(thumb-15x-layout larger-plate)
))
(def thumb-post-tr (translate [(- (/ mount-width 2) post-adj) (- (/ mount-height 1.15) post-adj) 0] web-post))
(def thumb-post-tl (translate [(+ (/ mount-width -2) post-adj) (- (/ mount-height 1.15) post-adj) 0] web-post))
(def thumb-post-bl (translate [(+ (/ mount-width -2) post-adj) (+ (/ mount-height -1.5) post-adj) 0] web-post))
(def thumb-post-br (translate [(- (/ mount-width 2) post-adj) (+ (/ mount-height -1.5) post-adj) 0] web-post))
(def thumb-connectors
(union
(triangle-hulls ; top two
(thumb-tl-place thumb-post-tr)
(thumb-tl-place thumb-post-br)
(thumb-tr-place thumb-post-tl)
(thumb-tr-place thumb-post-bl))
(triangle-hulls ; bottom two on the right
(thumb-br-place web-post-tr)
(thumb-br-place web-post-br)
(thumb-mr-place web-post-tl)
(thumb-mr-place web-post-bl))
(triangle-hulls ; bottom two on the left
(thumb-bl-place web-post-tr)
(thumb-bl-place web-post-br)
(thumb-ml-place web-post-tl)
(thumb-ml-place web-post-bl))
(triangle-hulls ; centers of the bottom four
(thumb-br-place web-post-tl)
(thumb-bl-place web-post-bl)
(thumb-br-place web-post-tr)
(thumb-bl-place web-post-br)
(thumb-mr-place web-post-tl)
(thumb-ml-place web-post-bl)
(thumb-mr-place web-post-tr)
(thumb-ml-place web-post-br))
(triangle-hulls ; top two to the middle two, starting on the left
(thumb-tl-place thumb-post-tl)
(thumb-ml-place web-post-tr)
(thumb-tl-place thumb-post-bl)
(thumb-ml-place web-post-br)
(thumb-tl-place thumb-post-br)
(thumb-mr-place web-post-tr)
(thumb-tr-place thumb-post-bl)
(thumb-mr-place web-post-br)
(thumb-tr-place thumb-post-br))
(triangle-hulls ; top two to the main keyboard, starting on the left
(thumb-tl-place thumb-post-tl)
(key-place 0 cornerrow web-post-bl)
(thumb-tl-place thumb-post-tr)
(key-place 0 cornerrow web-post-br)
(thumb-tr-place thumb-post-tl)
(key-place 1 cornerrow web-post-bl)
(thumb-tr-place thumb-post-tr)
(key-place 1 cornerrow web-post-br)
(key-place 2 lastrow web-post-tl)
(key-place 2 lastrow web-post-bl)
(thumb-tr-place thumb-post-tr)
(key-place 2 lastrow web-post-bl)
(thumb-tr-place thumb-post-br)
(key-place 2 lastrow web-post-br)
(key-place 3 lastrow web-post-bl)
(key-place 2 lastrow web-post-tr)
(key-place 3 lastrow web-post-tl)
(key-place 3 cornerrow web-post-bl)
(key-place 3 lastrow web-post-tr)
(key-place 3 cornerrow web-post-br)
(key-place 4 cornerrow web-post-bl))
(triangle-hulls
(key-place 1 cornerrow web-post-br)
(key-place 2 lastrow web-post-tl)
(key-place 2 cornerrow web-post-bl)
(key-place 2 lastrow web-post-tr)
(key-place 2 cornerrow web-post-br)
(key-place 3 cornerrow web-post-bl)
)
(triangle-hulls
(key-place 3 lastrow web-post-tr)
(key-place 3 lastrow web-post-br)
(key-place 3 lastrow web-post-tr)
(key-place 4 cornerrow web-post-bl))
))
;;;;;;;;;;
;; Case ;;
;;;;;;;;;;
(defn bottom [height p]
(->> (project p)
(extrude-linear {:height height :twist 0 :convexity 0})
(translate [0 0 (- (/ height 2) 10)])))
(defn bottom-hull [& p]
(hull p (bottom 0.001 p)))
(def left-wall-x-offset 10)
(def left-wall-z-offset 3)
(defn left-key-position [row direction]
(map - (key-position 0 row [(* mount-width -0.5) (* direction mount-height 0.5) 0]) [left-wall-x-offset 0 left-wall-z-offset]) )
(defn left-key-place [row direction shape]
(translate (left-key-position row direction) shape))
(defn wall-locate1 [dx dy] [(* dx wall-thickness) (* dy wall-thickness) -1])
(defn wall-locate2 [dx dy] [(* dx wall-xy-offset) (* dy wall-xy-offset) wall-z-offset])
(defn wall-locate3 [dx dy] [(* dx (+ wall-xy-offset wall-thickness)) (* dy (+ wall-xy-offset wall-thickness)) wall-z-offset])
(defn wall-brace [place1 dx1 dy1 post1 place2 dx2 dy2 post2]
(union
(hull
(place1 post1)
(place1 (translate (wall-locate1 dx1 dy1) post1))
(place1 (translate (wall-locate2 dx1 dy1) post1))
(place1 (translate (wall-locate3 dx1 dy1) post1))
(place2 post2)
(place2 (translate (wall-locate1 dx2 dy2) post2))
(place2 (translate (wall-locate2 dx2 dy2) post2))
(place2 (translate (wall-locate3 dx2 dy2) post2)))
(bottom-hull
(place1 (translate (wall-locate2 dx1 dy1) post1))
(place1 (translate (wall-locate3 dx1 dy1) post1))
(place2 (translate (wall-locate2 dx2 dy2) post2))
(place2 (translate (wall-locate3 dx2 dy2) post2)))
))
(defn key-wall-brace [x1 y1 dx1 dy1 post1 x2 y2 dx2 dy2 post2]
(wall-brace (partial key-place x1 y1) dx1 dy1 post1
(partial key-place x2 y2) dx2 dy2 post2))
(def case-walls
(union
; back wall
(for [x (range 0 ncols)] (key-wall-brace x 0 0 1 web-post-tl x 0 0 1 web-post-tr))
(for [x (range 1 ncols)] (key-wall-brace x 0 0 1 web-post-tl (dec x) 0 0 1 web-post-tr))
(key-wall-brace lastcol 0 0 1 web-post-tr lastcol 0 1 0 web-post-tr)
; right wall
(for [y (range 0 lastrow)] (key-wall-brace lastcol y 1 0 web-post-tr lastcol y 1 0 web-post-br))
(for [y (range 1 lastrow)] (key-wall-brace lastcol (dec y) 1 0 web-post-br lastcol y 1 0 web-post-tr))
(key-wall-brace lastcol cornerrow 0 -1 web-post-br lastcol cornerrow 1 0 web-post-br)
; left wall
(for [y (range 0 lastrow)] (union (wall-brace (partial left-key-place y 1) -1 0 web-post (partial left-key-place y -1) -1 0 web-post)
(hull (key-place 0 y web-post-tl)
(key-place 0 y web-post-bl)
(left-key-place y 1 web-post)
(left-key-place y -1 web-post))))
(for [y (range 1 lastrow)] (union (wall-brace (partial left-key-place (dec y) -1) -1 0 web-post (partial left-key-place y 1) -1 0 web-post)
(hull (key-place 0 y web-post-tl)
(key-place 0 (dec y) web-post-bl)
(left-key-place y 1 web-post)
(left-key-place (dec y) -1 web-post))))
(wall-brace (partial key-place 0 0) 0 1 web-post-tl (partial left-key-place 0 1) 0 1 web-post)
(wall-brace (partial left-key-place 0 1) 0 1 web-post (partial left-key-place 0 1) -1 0 web-post)
; front wall
(key-wall-brace lastcol 0 0 1 web-post-tr lastcol 0 1 0 web-post-tr)
(key-wall-brace 3 lastrow 0 -1 web-post-bl 3 lastrow 0.5 -1 web-post-br)
(key-wall-brace 3 lastrow 0.5 -1 web-post-br 4 cornerrow 1 -1 web-post-bl)
(for [x (range 4 ncols)] (key-wall-brace x cornerrow 0 -1 web-post-bl x cornerrow 0 -1 web-post-br))
(for [x (range 5 ncols)] (key-wall-brace x cornerrow 0 -1 web-post-bl (dec x) cornerrow 0 -1 web-post-br))
; thumb walls
(wall-brace thumb-mr-place 0 -1 web-post-br thumb-tr-place 0 -1 thumb-post-br)
(wall-brace thumb-mr-place 0 -1 web-post-br thumb-mr-place 0 -1 web-post-bl)
(wall-brace thumb-br-place 0 -1 web-post-br thumb-br-place 0 -1 web-post-bl)
(wall-brace thumb-ml-place -0.3 1 web-post-tr thumb-ml-place 0 1 web-post-tl)
(wall-brace thumb-bl-place 0 1 web-post-tr thumb-bl-place 0 1 web-post-tl)
(wall-brace thumb-br-place -1 0 web-post-tl thumb-br-place -1 0 web-post-bl)
(wall-brace thumb-bl-place -1 0 web-post-tl thumb-bl-place -1 0 web-post-bl)
; thumb corners
(wall-brace thumb-br-place -1 0 web-post-bl thumb-br-place 0 -1 web-post-bl)
(wall-brace thumb-bl-place -1 0 web-post-tl thumb-bl-place 0 1 web-post-tl)
; thumb tweeners
(wall-brace thumb-mr-place 0 -1 web-post-bl thumb-br-place 0 -1 web-post-br)
(wall-brace thumb-ml-place 0 1 web-post-tl thumb-bl-place 0 1 web-post-tr)
(wall-brace thumb-bl-place -1 0 web-post-bl thumb-br-place -1 0 web-post-tl)
(wall-brace thumb-tr-place 0 -1 thumb-post-br (partial key-place 3 lastrow) 0 -1 web-post-bl)
; clunky bit on the top left thumb connection (normal connectors don't work well)
(bottom-hull
(left-key-place cornerrow -1 (translate (wall-locate2 -1 0) web-post))
(left-key-place cornerrow -1 (translate (wall-locate3 -1 0) web-post))
(thumb-ml-place (translate (wall-locate2 -0.3 1) web-post-tr))
(thumb-ml-place (translate (wall-locate3 -0.3 1) web-post-tr)))
(hull
(left-key-place cornerrow -1 (translate (wall-locate2 -1 0) web-post))
(left-key-place cornerrow -1 (translate (wall-locate3 -1 0) web-post))
(thumb-ml-place (translate (wall-locate2 -0.3 1) web-post-tr))
(thumb-ml-place (translate (wall-locate3 -0.3 1) web-post-tr))
(thumb-tl-place thumb-post-tl))
(hull
(left-key-place cornerrow -1 web-post)
(left-key-place cornerrow -1 (translate (wall-locate1 -1 0) web-post))
(left-key-place cornerrow -1 (translate (wall-locate2 -1 0) web-post))
(left-key-place cornerrow -1 (translate (wall-locate3 -1 0) web-post))
(thumb-tl-place thumb-post-tl))
(hull
(left-key-place cornerrow -1 web-post)
(left-key-place cornerrow -1 (translate (wall-locate1 -1 0) web-post))
(key-place 0 cornerrow web-post-bl)
(key-place 0 cornerrow (translate (wall-locate1 -1 0) web-post-bl))
(thumb-tl-place thumb-post-tl))
(hull
(thumb-ml-place web-post-tr)
(thumb-ml-place (translate (wall-locate1 -0.3 1) web-post-tr))
(thumb-ml-place (translate (wall-locate2 -0.3 1) web-post-tr))
(thumb-ml-place (translate (wall-locate3 -0.3 1) web-post-tr))
(thumb-tl-place thumb-post-tl))
))
(def rj9-start (map + [0 -3 0] (key-position 0 0 (map + (wall-locate3 0 1) [0 (/ mount-height 2) 0]))))
(def rj9-position [(first rj9-start) (second rj9-start) 11])
(def rj9-cube (cube 14.78 13 22.38))
(def rj9-space (translate rj9-position rj9-cube))
(def rj9-holder (translate rj9-position
(difference rj9-cube
(union (translate [0 2 0] (cube 10.78 9 18.38))
(translate [0 0 5] (cube 10.78 13 5))))))
(def usb-holder-position (key-position 1 0 (map + (wall-locate2 0 1) [0 (/ mount-height 2) 0])))
(def usb-holder-size [6.5 10.0 13.6])
(def usb-holder-thickness 4)
(def usb-holder
(->> (cube (+ (first usb-holder-size) usb-holder-thickness) (second usb-holder-size) (+ (last usb-holder-size) usb-holder-thickness))
(translate [(first usb-holder-position) (second usb-holder-position) (/ (+ (last usb-holder-size) usb-holder-thickness) 2)])))
(def usb-holder-hole
(->> (apply cube usb-holder-size)
(translate [(first usb-holder-position) (second usb-holder-position) (/ (+ (last usb-holder-size) usb-holder-thickness) 2)])))
(def teensy-width 20)
(def teensy-height 12)
(def teensy-length 33)
(def teensy2-length 53)
(def teensy-pcb-thickness 2)
(def teensy-holder-width (+ 7 teensy-pcb-thickness))
(def teensy-holder-height (+ 6 teensy-width))
(def teensy-offset-height 5)
(def teensy-holder-top-length 18)
(def teensy-top-xy (key-position 0 (- centerrow 1) (wall-locate3 -1 0)))
(def teensy-bot-xy (key-position 0 (+ centerrow 1) (wall-locate3 -1 0)))
(def teensy-holder-length (- (second teensy-top-xy) (second teensy-bot-xy)))
(def teensy-holder-offset (/ teensy-holder-length -2))
(def teensy-holder-top-offset (- (/ teensy-holder-top-length 2) teensy-holder-length))
(def teensy-holder
(->>
(union
(->> (cube 3 teensy-holder-length (+ 6 teensy-width))
(translate [1.5 teensy-holder-offset 0]))
(->> (cube teensy-pcb-thickness teensy-holder-length 3)
(translate [(+ (/ teensy-pcb-thickness 2) 3) teensy-holder-offset (- -1.5 (/ teensy-width 2))]))
(->> (cube 4 teensy-holder-length 4)
(translate [(+ teensy-pcb-thickness 5) teensy-holder-offset (- -1 (/ teensy-width 2))]))
(->> (cube teensy-pcb-thickness teensy-holder-top-length 3)
(translate [(+ (/ teensy-pcb-thickness 2) 3) teensy-holder-top-offset (+ 1.5 (/ teensy-width 2))]))
(->> (cube 4 teensy-holder-top-length 4)
(translate [(+ teensy-pcb-thickness 5) teensy-holder-top-offset (+ 1 (/ teensy-width 2))])))
(translate [(- teensy-holder-width) 0 0])
(translate [-1.4 0 0])
(translate [(first teensy-top-xy)
(- (second teensy-top-xy) 1)
(/ (+ 6 teensy-width) 2)])
))
(defn screw-insert-shape [bottom-radius top-radius height]
(union (cylinder [bottom-radius top-radius] height)
(translate [0 0 (/ height 2)] (sphere top-radius))))
(defn screw-insert [column row bottom-radius top-radius height]
(let [shift-right (= column lastcol)
shift-left (= column 0)
shift-up (and (not (or shift-right shift-left)) (= row 0))
shift-down (and (not (or shift-right shift-left)) (>= row lastrow))
position (if shift-up (key-position column row (map + (wall-locate2 0 1) [0 (/ mount-height 2) 0]))
(if shift-down (key-position column row (map - (wall-locate2 0 -1) [0 (/ mount-height 2) 0]))
(if shift-left (map + (left-key-position row 0) (wall-locate3 -1 0))
(key-position column row (map + (wall-locate2 1 0) [(/ mount-width 2) 0 0])))))
]
(->> (screw-insert-shape bottom-radius top-radius height)
(translate [(first position) (second position) (/ height 2)])
)))
(defn screw-insert-all-shapes [bottom-radius top-radius height]
(union (screw-insert 0 0 bottom-radius top-radius height)
(screw-insert 0 lastrow bottom-radius top-radius height)
(screw-insert 2 (+ lastrow 0.3) bottom-radius top-radius height)
(screw-insert 3 0 bottom-radius top-radius height)
(screw-insert lastcol 1 bottom-radius top-radius height)
))
(def screw-insert-height 3.8)
(def screw-insert-bottom-radius (/ 5.31 2))
(def screw-insert-top-radius (/ 5.1 2))
(def screw-insert-holes (screw-insert-all-shapes screw-insert-bottom-radius screw-insert-top-radius screw-insert-height))
(def screw-insert-outers (screw-insert-all-shapes (+ screw-insert-bottom-radius 1.6) (+ screw-insert-top-radius 1.6) (+ screw-insert-height 1.5)))
(def screw-insert-screw-holes (screw-insert-all-shapes 1.7 1.7 350))
(def wire-post-height 7)
(def wire-post-overhang 3.5)
(def wire-post-diameter 2.6)
(defn wire-post [direction offset]
(->> (union (translate [0 (* wire-post-diameter -0.5 direction) 0] (cube wire-post-diameter wire-post-diameter wire-post-height))
(translate [0 (* wire-post-overhang -0.5 direction) (/ wire-post-height -2)] (cube wire-post-diameter wire-post-overhang wire-post-diameter)))
(translate [0 (- offset) (+ (/ wire-post-height -2) 3) ])
(rotate (/ α -2) [1 0 0])
(translate [3 (/ mount-height -2) 0])))
(def wire-posts
(union
(thumb-ml-place (translate [-5 0 -2] (wire-post 1 0)))
(thumb-ml-place (translate [ 0 0 -2.5] (wire-post -1 6)))
(thumb-ml-place (translate [ 5 0 -2] (wire-post 1 0)))
(for [column (range 0 lastcol)
row (range 0 cornerrow)]
(union
(key-place column row (translate [-5 0 0] (wire-post 1 0)))
(key-place column row (translate [0 0 0] (wire-post -1 6)))
(key-place column row (translate [5 0 0] (wire-post 1 0)))))))
(def model-right (difference
(union
key-holes
connectors
thumb
thumb-connectors
(difference (union case-walls
screw-insert-outers
teensy-holder
usb-holder)
rj9-space
usb-holder-hole
screw-insert-holes)
rj9-holder
; wire-posts
; thumbcaps
; caps
)
(translate [0 0 -20] (cube 350 350 40))
))
(spit "things/right.scad"
(write-scad model-right))
(spit "things/left.scad"
(write-scad (mirror [-1 0 0] model-right)))
(spit "things/right-test.scad"
(write-scad
(union
key-holes
connectors
thumb
thumb-connectors
case-walls
thumbcaps
caps
teensy-holder
rj9-holder
usb-holder-hole
; usb-holder-hole
; ; teensy-holder-hole
; screw-insert-outers
; teensy-screw-insert-holes
; teensy-screw-insert-outers
; usb-cutout
; rj9-space
; wire-posts
)))
(spit "things/right-plate.scad"
(write-scad
(cut
(translate [0 0 -0.1]
(difference (union case-walls
teensy-holder
; rj9-holder
screw-insert-outers)
(translate [0 0 -10] screw-insert-screw-holes))
))))
(spit "things/test.scad"
(write-scad
(difference usb-holder usb-holder-hole)))
(defn -main [dum] 1) ; dummy to make it easier to batch