# Change log
-## Mark 3: ???
+## Mark 3.1: 2014-11-25
-* Initial circuit board design in KiCAD + Racket.
+* Second revision of circuit board.
+* Arrows on L2 shifted over one column.
+* Circuit board license changed to match the rest of the Atreus project.
+
+The second revision of the circuit board exposes the reset pin,
+removing the need for hookup wire described below. It also removes
+[the need to cut a notch in the circuit board](https://www.flickr.com/photos/technomancy/15862732742)
+to allow the USB connector more clearance.
+
+The layout changed slightly by shifting the arrow keys on L2 over one
+column so they can be hit from the normal position without the pinky key.
+
+## Mark 3: 2014-10-30
+
+* Initial board design in KiCAD + Racket.
* Assembly guide updated to include wood finishing.
* Cable hole in case spacer has rounded edges.
* New layout: multidvorak.
* Switch to Pololu A-Star Micro controller. (also USB mini->micro)
+A
+[circuit board was designed in KiCAD with the switch placement logic written in Racket](http://technomancy.us/176). The
+first revision of the circuit board does not expose the reset pin, so
+hookup wire is needed to provide a backup reset mechanism once the board
+is fully assembled. The firmware contains a reset mechanism, but if
+bugs in the firmware prevent it from being activated, the back case
+can be removed and the hookup wires can be connected twice in a second
+to initiate a reset.
+
+The new design replaced the Teensy 2 microcontroller with the smaller
+[A-Star Micro](http://www.pololu.com/product/3101) which uses a USB
+Micro connector instead of USB Mini.
+
+The new multidvorak layout allows the firmware to support hardware
+dvorak and software dvorak simultaneously. The edges of the cable hole
+are rounded off to reduce strain on the cable.
+
## NX-02: 2014-08-05
-* Experimental prototype.
* Matias Quiet Click switches.
* Teensy 3: ARM-based microcontroller.
* Orestes: firmware written in Forth.
+An
+[experimental prototype](https://www.flickr.com/photos/technomancy/14654421878)
+using Matias Quiet Click switches and the ARM-based Teensy 3
+controller. The Matias switch shape was supported by cutting the
+notches out of each switch hole individually with a knife.
+
+Porting the firmware to the ARM platform was accompanied by porting
+[an implementation of Forth](https://github.com/technomancy/orestes/tree/teensy3)
+and porting the firmware logic to that.
+
## Mark 2: 2014-04-22
-* New openscad case design by Constantine.
+* New OpenSCAD case design by Constantine.
* New layouts: hardware dvorak, hardware colemak.
* Assembly guide.
+The case was
+[redesigned in OpenSCAD](https://github.com/technomancy/atreus/blob/master/case/openscad/atreus_case.scad)
+to be easier to produce from mail-order laser cutting services. This
+revision can be recognized by its use of eight screws instead of the
+original seven. The cuts in the top plate around the switches are also
+much closer to the switches themselves.
+[A second independent build](http://geekhack.org/index.php?topic=57007.msg1292144)
+was documented.
+
+The assembly process is documented properly.
+
## Mark 1: 2014-04-01
* Custom Atreus firmware in C.
-* New layout with digits in numpad arrangement.
-* Add layer for function keys and arrows.
+* Layout changes; new layer.
+
+A
+[custom Atreus-specific firmware codebase](https://github.com/technomancy/atreus-firmware)
+was started. Digits were moved to a numpad arrangement and the L2
+layer (function and arrow keys) was added. The first
+[third-party build](http://blog.tarn-vedra.de/2014/04/reproducing-keyboard-science_1707.html)
+was documented.
## NX-01: 2014-02-22
* Initial prototype!
+* Case hand-drawn in Inkscape.
+* Teensy 2 microcontroller, hand-wired matrix.
* Uses TMK firmware.
+
+This was the first Atreus,
+[created solely for personal use](http://technomancy.us/173) and
+meticulously hand-wired with a number of errors. Support for the
+Atreus was
+[added to the TMK firmware codebase](https://github.com/technomancy/tmk_keyboard/tree/atreus),
+but power-saving bugs in TMK meant that it occasionally dropped key
+presses on low-voltage laptops.
projects / atreides.git / blobdiff