: ! @ { } | || pgup 7 8 9 *
: # $ ( ) ` || pgdn 4 5 6 +
- : % ^ [ ] ~ || \ 1 2 3 ?
+ : % ^ [ ] ~ || & 1 2 3 \
: L2 insert super shift bksp ctrl || alt space fn . 0 =
The =L2= key switches it to the function layer, and tapping =L0= here
For users that need to operate in sound-sensitive environments like
open offices or libraries, [[http://deskthority.net/wiki/Cherry_MX_Clear][Cherry MX Clear]] switches are a popular
-choice since they still offer tactility withut the noise.
+choice since they still offer tactility without the noise.
*** Diodes
can use these for an Atreus, it's unlikely you'll find a set with the
correct number for each row, so it's more wasteful.
+** Circuit Board
+
+The =atreus.rkt= program calculates switch and diode positions based
+on row/column counts, spacing, and rotation factors, and emits a
+=atreus.kicad_pcb= file. The board outline and traces are done by hand
+and are stored in the =header.rktd= and =traces.rktd= files
+respectively. The =atreus.kicad_pcb= file can be imported into [[http://kicad.org][Kicad]]
+which can export Gerber files suitable for fabrication. A copy of the
+Kicad PCB file is included in the repository if you don't want to
+recompile it using Racket. Recompiling is only required if you want to
+make changes to the procedurally-generated portions of the board.
+
+Unfortunately most PCB fabricators require a minimum order of 10 or
+so, making this impractical for one-offs. The PCB is not required, so
+for one-off boards it's usually more sensible to stick with a [[http://atreus.technomancy.us/assembly-hand-wired.pdf][hand-wired build]] instead.
+
** Case
-Layered laser-cut wood or acrylic. The original case (=case-mk-i.svg=)
-is slightly less wide and has a minor asymmetry with the screws on the
-bottom side. The [[http://geekhack.org/index.php?topic%3D54759.msg1304117#msg1304117][mark II case]] (in the =case= directory) is implemented
-programmatically in openscad, though dxf files are available as a
-convenience, which can be converted to SVG or EPS for laser cutting
-with Inkscape. Mark II features 8 screw holes and a kind of "stair
-step" design around the top and bottom of the key clusters; mark I is
+Layered laser-cut wood or acrylic. The [[http://geekhack.org/index.php?topic%3D54759.msg1304117#msg1304117][mark II case]] (EPS files in the
+=case/= directory) features 8 screw holes and a kind of "stair step"
+design around the top and bottom of the key clusters; mark I is
pictured below.
-[[./layers.jpg]]
+The =3mm.eps= file contains the top plate, bottom plate, and switch
+plate. These can all be cut on 3mm acrylic or wood. The =spacer.eps=
+file should be cut on something thicker; between 4.5mm and 6mm is
+recommended. The spacer needs to be at least as thick as the connector
+of the USB cable you're using.
+
+There is also a programmatically-implemented version of the case
+written in OpenSCAD; it is more flexible (you can tweak the number of
+rows/cols, etc and recompile) but it doesn't match the canonical case
+exactly; in particular the screw holes are placed differently.
-The bottom and top covers (black in the photo) should be cut in 3mm.
-The switch plate (frosted in the photo) can be cut in 4.5 or
-3mm. The spacer should be cut in 5mm; it needs to be at least as
-thick as the USB cable you connect to the microcontroller. I
-recommend using a USB cable with as thin a connector as you can
-find or sanding the connector down to the required thickness.
+The original case (=case-mk-i.svg=) design is also included; it is
+slightly less wide and has a minor asymmetry with the screws on the
+bottom side.
+
+On a 100W Epilog laser, the 3mm layers cut in about a minute and a
+half. I did a run with 6mm acrylic of the other layers which took
+nearly 6 minutes.
+
+Wood cases should be finished with sandpaper and finishing oil/wax.
** Firmware
Hand-wired boards will want the [[http://atreus.technomancy.us/assembly-hand-wired.pdf][previous edition of the assembly instructions]].
+The LaTeX source to the assembly instructions is in the =assembly= directory.
+
** Inspiration
These fine projects all provided inspiration for various aspects of
If you've built an Atreus, please add your name to [[https://github.com/technomancy/atreus/wiki/BuildLogs][the build logs wiki]].
-There's also a [[http://librelist.com/browser/atreus/][mailing list]] for people who have built or ordered an
+There's also a [[http://atreus.technomancy.us/list][mailing list]] for people who have built or ordered an
Atreus or are interested in doing so. To join, simply email
=atreus@librelist.com= with a subject of "join" and reply to the
confirmation.
** License
-Copyright © 2014 Phil Hagelberg and contributors
+Copyright © 2014-2015 Phil Hagelberg and contributors
Released under the [[https://www.gnu.org/licenses/gpl.html][GNU GPL version 3]]
projects / atreides.git / blobdiff