Blinkenwall.com: Unterschied zwischen den Versionen

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{{#ev:vimeo|2931136}}
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[[Bild:Blinkenwall_webinterface.png|thumb|right|300px|Webinterface Screenshot]]
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== Blinkenwall.. ==
 +
 
 +
* is the wall between our [[Hauptraum|mainroom]] and the [[Bibliothek|library]]
 +
* in this wall are 9x5=45 glassbricks installed
 +
* next to every glassbrick there is one RGB-led with a pretty neat [http://www.allegromicro.com/en/Products/Part_Numbers/6281/6281.pdf chip] attached
 +
* these presoldered boards are called [http://macetech.com/store/index.php?main_page=product_info&cPath=1&products_id=1 Shiftbrite]
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* they are currently controlled from an arduino this may change soon for something with more computational power :)
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* [http://blinkenwall.com Click here to draw something nice on the wall!!]
 +
 
 +
 
 +
=== How ===
 +
 
 +
SVN with current software https://whatever.metalab.at/projects/blinkenwall
 +
__TOC__
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We just connected the Arduino to a fonera 2202 over serial.
 +
 
 +
Now its possible to stream data for display to the blinkenwall using your favourite webbrowser.
 +
 
 +
Lessons learned:
 +
* one can simply connect RX/TX from fonera to arduino
 +
* no stty in default openwrt busybox build
 +
* openwrt building is an fairly easy task
 +
* replacing the busybox binary on a live system during operation is insane and possible! :)
 +
 
 +
=== Reference ===
 +
 
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* [http://www.allegromicro.com/en/Products/Part_Numbers/6281/6281.pdf Allegro A6281 documentation] 
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* [http://macetech.com/store/index.php?main_page=product_info&cPath=1&products_id=1 Shiftbrite]
 +
 
 +
=== Who ===
 +
 
 +
* [[Benutzer:Overflo|Overflo]] - electronics, soldering, webinterface, fonera setup
 +
* [[Benutzer:Wizard23|Wizard23]] - help with electronics, basic software setup
 +
* [[Benutzer:Metaz|Metaz]]  - arduino library software for shiftbrites
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* [[Benutzer:Nex|Nex]] arduino software for webinterface streaming
 +
* [[Benutzer:Mactux|Mactux]] CSS + iphone webinterface
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* [[Benutzer:Natano|Natano]] .C program to decode webinterface streaming files
 +
 
 +
 
 +
== Blinkenwall v1.5 ==
 +
 
 +
Now with ~30 fps and network mode! Go to http://blinkenwall.in.metalab.at/ to activate network mode and send your [https://secure.wikimedia.org/wikipedia/en/wiki/Netpbm_format P6 PPM] frames to port 1337/tcp. Make sure that all your frames are exactly 146 bytes in size or you'll risk graphics glitches at higher frame rates.
 +
 
 +
=== Who ===
 +
* [[Benutzer:Sqrt2|sqrt2]] - Making it work
 +
* [[Benutzer:Amir|Amir]] - Netpbm library for Arduino
 +
 
 +
=== Lessons learned ===
 +
* netcat has fixed-length 8K RX/TX buffers.
 +
* The Arduino Duemilanove resets on DTS low (the IDE uses that to reset before programming).
 +
* The Arduino Serial class implements an RX ringbuffer of 128 bytes. Patch the Arduino SDK to adjust this to your needs; RX_BUFFER_SIZE in hardware/arduino/cores/arduino/HardwareSerial.cpp.
 +
* mkfifo(1) is neat when opening ttyUSB* devices leads to an Arduino reset.
 +
 
 +
=== Applications ===
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* [https://whatever.metalab.at/projects/blinkenwall/v1.5/fonera/ blinkblink] -- old-school animations
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* [https://whatever.metalab.at/projects/blinkenwall/blinkenfft/ blinkenfft] -- real-time audio FFT
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* [https://whatever.metalab.at/projects/blinkenwall/mplayer_vo/ mplayer -vo blinkenwall] -- watch movies in a stunning resolution of 9x5
 +
 
 +
== Videos ==
 +
First Blinkenwall
 +
* http://vimeo.com/2931136
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* http://vimeo.com/5714761
 +
 
 +
Blinkenwall after resurrection at [[Hackathon_8]]
 +
* https://vimeo.com/45418812
 +
 
 +
== Photos ==
 +
{| width="100%"
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|-
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|width="33%" valign="top"|[[Bild:Blinkenwall_back_closeup2.JPG|thumb|center|300px|Another Backside close-up]]
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|width="33%" valign="top"|[[Bild:Blinkenwall_back_closeup.jpg|thumb|center|300px|Backside close-up]]
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|width="33%" valign="top"|[[Bild:Blinkenwall_back_closeup_with_flash.JPG|thumb|center|300px|Backside close-up with flashlight]]
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|}
 +
 
 +
 
 +
== Various Links ==
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* Sample effect - https://whatever.metalab.at/user/meta/blinkenwall/WallSample
 +
* SVN with current software https://whatever.metalab.at/projects/blinkenwall
 +
* http://blinkenwall.com
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[[Kategorie:English]]
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[[Kategorie:Hauptraum]]
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[[Kategorie:Projekte]]

Version vom 4. Februar 2013, 20:35 Uhr

Webinterface Screenshot

Blinkenwall..

  • is the wall between our mainroom and the library
  • in this wall are 9x5=45 glassbricks installed
  • next to every glassbrick there is one RGB-led with a pretty neat chip attached
  • these presoldered boards are called Shiftbrite
  • they are currently controlled from an arduino this may change soon for something with more computational power :)
  • Click here to draw something nice on the wall!!


How

SVN with current software https://whatever.metalab.at/projects/blinkenwall

We just connected the Arduino to a fonera 2202 over serial.

Now its possible to stream data for display to the blinkenwall using your favourite webbrowser.

Lessons learned:

  • one can simply connect RX/TX from fonera to arduino
  • no stty in default openwrt busybox build
  • openwrt building is an fairly easy task
  • replacing the busybox binary on a live system during operation is insane and possible! :)

Reference

Who

  • Overflo - electronics, soldering, webinterface, fonera setup
  • Wizard23 - help with electronics, basic software setup
  • Metaz - arduino library software for shiftbrites
  • Nex arduino software for webinterface streaming
  • Mactux CSS + iphone webinterface
  • Natano .C program to decode webinterface streaming files


Blinkenwall v1.5

Now with ~30 fps and network mode! Go to http://blinkenwall.in.metalab.at/ to activate network mode and send your P6 PPM frames to port 1337/tcp. Make sure that all your frames are exactly 146 bytes in size or you'll risk graphics glitches at higher frame rates.

Who

  • sqrt2 - Making it work
  • Amir - Netpbm library for Arduino

Lessons learned

  • netcat has fixed-length 8K RX/TX buffers.
  • The Arduino Duemilanove resets on DTS low (the IDE uses that to reset before programming).
  • The Arduino Serial class implements an RX ringbuffer of 128 bytes. Patch the Arduino SDK to adjust this to your needs; RX_BUFFER_SIZE in hardware/arduino/cores/arduino/HardwareSerial.cpp.
  • mkfifo(1) is neat when opening ttyUSB* devices leads to an Arduino reset.

Applications

Videos

First Blinkenwall

Blinkenwall after resurrection at Hackathon_8

Photos

Another Backside close-up
Backside close-up
Backside close-up with flashlight


Various Links