Blinkenwall.com: Unterschied zwischen den Versionen
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* 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. | * 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. | * mkfifo(1) is neat when opening ttyUSB* devices leads to an Arduino reset. | ||
+ | |||
+ | === Applications === | ||
+ | * [https://whatever.metalab.at/projects/blinkenwall/v1.5/fonera/ blinkblink] -- old-school animations | ||
+ | * [https://whatever.metalab.at/projects/blinkenwall/blinkenfft/ blinkenfft] -- real-time audio FFT | ||
+ | * [https://whatever.metalab.at/projects/blinkenwall/mplayer_vo/ mplayer -vo blinkenwall] -- watch movies in a stunning resolution of 9x5 | ||
== Videos == | == Videos == |
Version vom 31. Januar 2011, 06:34 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 ~30 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.
Applications
- blinkblink -- old-school animations
- blinkenfft -- real-time audio FFT
- mplayer -vo blinkenwall -- watch movies in a stunning resolution of 9x5
Videos
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