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== How == | === How === | ||
SVN with current software https://whatever.metalab.at/projects/blinkenwall | SVN with current software https://whatever.metalab.at/projects/blinkenwall | ||
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* replacing the busybox binary on a live system during operation is insane and possible! :) | * replacing the busybox binary on a live system during operation is insane and possible! :) | ||
== Reference == | === Reference === | ||
* [http://www.allegromicro.com/en/Products/Part_Numbers/6281/6281.pdf Allegro A6281 documentation] | * [http://www.allegromicro.com/en/Products/Part_Numbers/6281/6281.pdf Allegro A6281 documentation] | ||
* [http://macetech.com/store/index.php?main_page=product_info&cPath=1&products_id=1 Shiftbrite] | * [http://macetech.com/store/index.php?main_page=product_info&cPath=1&products_id=1 Shiftbrite] | ||
=== Who === | |||
== Who == | |||
* [[Benutzer:Overflo|Overflo]] - electronics, soldering, webinterface, fonera setup | * [[Benutzer:Overflo|Overflo]] - electronics, soldering, webinterface, fonera setup | ||
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* [[Benutzer:Natano|Natano]] .C program to decode webinterface streaming files | * [[Benutzer:Natano|Natano]] .C program to decode webinterface streaming files | ||
== Blinkenwall v1.5 == | |||
Now with up to 70 fps and network mode! Go to [http://10.20.30.26/] to activate network mode and send your [https://secure.wikimedia.org/wikipedia/en/wiki/Netpbm_format P6 PPM] frames to port 1337/tcp. Be sure that all your frames are exactly 146 bytes in size! | |||
=== 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. | |||
== Videos == | == Videos == | ||
Version vom 28. Januar 2011, 04:59 Uhr
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 up to 70 fps and network mode! Go to [1] to activate network mode and send your P6 PPM frames to port 1337/tcp. Be sure that all your frames are exactly 146 bytes in size!
Who
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.
Videos
{{#ev:vimeo|2931136}}
{{#ev:vimeo|5714761}}
Photos
Various Links
- Sample effect - https://whatever.metalab.at/user/meta/blinkenwall/WallSample
- SVN with current software https://whatever.metalab.at/projects/blinkenwall
- http://blinkenwall.com
