Led Matrix: Unterschied zwischen den Versionen

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-For the LED Matrix we want to build on the [[CCCamp2007]] we decided to design a GNU LEDMatrix Controller/Driver setup. It will consist of two parts the FPGA board and a several driver electronics boards. Now almost one year later we're still working on it :)
+=== WTF? ===
+[[Bild:Matrix_frontside.jpeg|thumb|200px|hypnomatrix is hypnotizing]]
+[[Bild:Matrix_backside.jpeg|thumb|200px|all hail to the hypnomatrix]]
+For the LED Matrix we wanted to build on the [[CCCamp2007]] we decided to design a GNU LEDMatrix Controller/Driver setup. It consists of two parts the FPGA board and a several driver electronics boards. Now almost one year later we're finally done!
+''see also:'' [http://www.flickr.com/photos/1000points/2509802438/ metalab led matrix - demo "die ewigkeit schmerzt"](Video)
+== Animations ==
+Two Animations for the linuxwochen: [[Bild:Metalabanim.zip]]
+<div>
+<div style='float:left'>{{#ev:youtube|pHdAvMrkO0U}}</div>
+</div>
+<div style='clear:both'></div>
 == Status ==
-Everything is soldered and it works. We still need to figure out a fast way to get Video data to the matrix.
+Everything is soldered and it works. We can stream videos via the parallel interface of the via board to the matrix with 72fps :)
+* main svn: https://whatever.metalab.at/projects/FPGAMatrix/
+* cliffords mplayer patch: http://svn.clifford.at/handicraft/2008/metaleds/
+== Usage examples ==
+ clifford/mplayer/mplayer-bin -vo metaleds:/dev/lp0 -framedrop -vf scale -zoom -x 72 -y 48 test.avi
+ netcat -l -p 7000 > /dev/lp0
+Format is: 72x48 bytes of pixeldata (ranging from 0x00 to 0x0F) followed by a single 0x80 (to flip framebuffers)
+== Real-time access ==
+=== Raw protocol ===
+x48 = 3456 octets of pixel data followed by a terminating 0x80 octet.
+Each pixel data octet represents one pixel's brightness, ranging from 0 (0x00, off) to 15 (0x0F, brightest).
+The pixels start at the upper left corner and are numbered in [http://en.wikipedia.org/wiki/Row-major_order row-major order] (see the diagram below).
+All output is double-buffered on the fpga, so you have to send a 0x80 after the pixel data to flip the frame buffers.
+<pre>
+ ________________________
+| 1  2  3 ...          72|
+|73 50 ...            144|
+|.                       |
+|.                       |
+|...                 3456|
+|________________________|
+</pre>
+=== Using with C/C++ ===
+You can use the metalib library from here; it comes with a couple of demos:
+https://whatever.metalab.at/projects/FPGAMatrix/client/
+=== Using with Python ===
+You can use functions like getpixel, setpixel, submit with the python classes in https://whatever.metalab.at/projects/FPGAMatrix/python/
+It supports the (now encouraged) way of using TCP. A example (Game of Life) is available.
 == Specs ==
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 * 74HC595 shifting registers
 == New MiniITX Board ==
-VIA EPIA-PD
+VIA EPIA-M 1000G
-* http://www.i2c-bus.org/  very good read on i2c specs
-* https://help.ubuntu.com/community/ViaEpiaDriHowto   kernel stuff for i2c
-* http://robots.net/article/983.html article on this board
-* <nowiki>http://www.nxp.com/#/pip/pip=[pfp=41735]|pp=[v=d,t=pfp,i=41735,fi=,ps=0][0]</nowiki> i2c specs
-* http://codesink.org/eeprog.html sample userland app using i2c on the via board
-* http://www.linuxjournal.com/article/7136 i2c kernel driver linux stuff
-There are three data transfer speeds for the I2C bus: standard, fast-mode, and high-speed mode. Standard is '''100 Kbps.''' Fast-mode is '''400 Kbps''', and high-speed mode supports speeds up to '''3.4 Mbps'''. All are backward compatible. The I2C bus supports 7-bit and 10-bit address space devices and devices that operate under different voltages.
-Ohoh
-http://archives.andrew.net.au/lm-sensors/msg29149.html
-kHz and 400kHz are *maximum* frequency for standard and high-speed
-*I2C* busses. What your VIA bridge really is is an SMBus, so it must run
-at a speed between 10kHz and 100kHz if I remember correctly.
-As a matter of fact, I already measured both my VIA and Intel SMBus chips
-at 16kHz, exactly like you. So I am not surprised at all by what you are
-reporting.
+Ghz
+Gig RAM
+MPEG2 Decoderchipset
-kernel patch '''UNTESTED''':
-http://archives.andrew.net.au/lm-sensors/msg29186.html
 [[Kategorie:WhateverLab]]
 [[Kategorie:Projekte]]