# mini LED CUBE

A 3x3x3 LED cube, originally based on [Paul Wilhelms project][2] with USB and a
lot of new features. An AVR (attiny2313) with [V-USB][3] (software
USB stack) control a matrix of 3x3x3 LEDs which forms a 3D cube of LEDs. Every
LED in this cube can be controlled independently over a simple
protocol. Various tools (commandline-tool, 3D OpenGL editor) can be used to
create animation sequences or simply use the cube as an [XFD][4] device.

![pcb](/doc/readme_cover.png?raw=true)


## Building

The project consists of two parts: The LED cube and the controller PCB. Both parts can
be build completely separate but need to work together.

* The Cube is a little bit tricky to solder. To see which wire should be bend
  and solder in which direction, use the [3D STL model][12] for reference. To
  see more detail, install [OpenSCAD][13] and load the [threedvis.scad][14] file.

* For the PCB there is a [detailed instruction plan][11] available. The
  instructions include soldering the parts, testing, flashing the firmware and
  setting the fuse bits.


## Tools

* The [client lib][5] is a simple interface for other software
  implementations. Have a look at the [demo.c][6] file how to include the lib
  into your own project.

* A commandline client [clcc][9] can be used to control the cube interactively
  over the commandline. Various commands can be send to the cube, see
  [the sourcecode][10] for explanation.

* The [3D OpenGL Editor][7] is using the client lib mentioned above. The editor
  shows a 3D representation of the LED cube and can be moved with the cursor
  keys. All virtual LEDs can be clicked with the mouse to toggle it on or off.

* To use the cube as a XFD (show number of mails in INBOX, finished tickets today,
  incoming phone call, number of missed chat messages in an IRC channel, ...)
  you can use the [frame2cube.pl][8] script to send a complete frame to the cube.


[1]:http://www.cthn.de/projects/LEDCube
[2]:http://mosfetkiller.de/?s=miniledcube
[3]:http://www.obdev.at/products/vusb/index.html
[4]:https://www.google.de/search?q=extreme+feedback+device
[5]:https://github.com/okoyono/mini-led-cube/tree/master/client
[6]:https://github.com/okoyono/mini-led-cube/blob/master/client/demo.c
[7]:https://github.com/okoyono/mini-led-cube/tree/master/editor
[8]:https://github.com/okoyono/mini-led-cube/blob/master/tools/frame2cube.pl
[9]:https://github.com/okoyono/mini-led-cube/blob/master/client/clcc.c
[10]:https://github.com/okoyono/mini-led-cube/blob/master/client/clcc.c#L34-L44
[11]:https://github.com/okoyono/mini-led-cube/blob/master/doc/aufbauanleitung.txt
[12]:https://github.com/okoyono/mini-led-cube/blob/master/doc/threedvis/threedvis.stl
[13]:http://www.openscad.org/
[14]:https://github.com/okoyono/mini-led-cube/blob/master/doc/threedvis/threedvis.scad