LED

2014-10-22T18:41:10Z

199.188.192.21: /* Objective - Great Wall of Noisebridge */

== Objective - Great Wall of Noisebridge==
A beautiful, Times Square style LED Wall ([https://www.youtube.com/watch?v=J9WWJnb6t8M&feature=youtu.be example Emoji video]), which will reside in the Hackertorium on the wall that says "American Dream." The wall is being organized by [[User:Dana|Dana]] and [[User:James|James]] with the help of the community. The size of the wall will be modular, expanding as additional [http://www.aliexpress.com/item/P6-SMD-LED-Module-5v/629551473.html panels] are added. An example of two 16x32 panels in action was demonstrated at the end of the 10/21 Tuesday meeting using both a web interface and curl. 
 
It will be possible to program the wall from Slack, IRC, Web Interface, Kinect, webcams, etc.
 

== Parts Needed ==
* P5 or P6 (spacing) RGB LED Panels (either [http://www.adafruit.com/products/420 16x32] or [http://www.adafruit.com/products/1484 32x32 RBG]) - as many as we can purchase. Via [http://www.aliexpress.com/item/P6-SMD-LED-Module-5v/629551473.html AliExpress]
:: '''Mitch will be purchasing panels directly from the seller in China at the start of November and shipping them to the space.'''
* Beaglebone Black w/ [http://beagleboard.org/project/octoscroller/ Octoscroller Cape]
:: '''One of each already donated'''
* [http://www.nycresistor.com/2013/07/27/ledscape/#more-6321 LEDscape] software for Beaglebone Black on NYC Resistor's [https://github.com/osresearch/LEDscape Github]
* [https://github.com/marqsm/LED-bot LEDbot Github] - Scheduler software ([http://led-bot.readthedocs.org/en/latest/ documentation])
* a solid PC Powersupply for driving the wall. Got one kicking around?
* Related to this project is [[User:Hzeller|Henner]]'s([https://github.com/hzeller/rpi-rgb-led-matrix Github]). His coding for these panels uses the Raspberry Pi.
* Adafruit's [https://github.com/adafruit/RGB-matrix-Panel Arduino library] for RGB Matrix Panels
 

== How do I help? ==
You can pledge a panel by donating $10 - 20
* Give cash to Mitch, Dana or James directly.
* Credit card donations can be paypal'ed to Mitch directly.
:: PayPal donate as 'friend or family' to avoid charges.
:: Add a note "This is for the led wall."
 

== Amount raised so far ==
''Total'' $170 as of 10/21/2014
== Can I see an example of this in action? ==
NYC Resistor has a [https://trmm.net/Category:LEDscape#Octoscroller nice page] with a series of projects they've already completed using the Beaglebone + cape + LEDscape. 
 
''''I've written the LEDscape "firmware" for the BeagleBone Black that uses the PRU ("Programable Realtime Units") to drive 64 RGB matrices or 32 of the WS2811 LED strips with 0% CPU load. This allows all of the ARM's CPU time to be used for rendering frames into a buffer, which is then clocked out at the high speed 800 KHz rate to the WS281x strips or at a 1 MHz clock to the matrices. This rate allows 544 meters of strip / 64 31x16 LED matrices to be drawn at 30fps. Since the PRU can read any of the ARM's RAM it is possible to change the frame buffer pointer on every frame for easy double-buffering. Brief, disorganized notes on setup for the PRU.''''
 
== How can I use this thing? ==
Add specs on LEDScape, web gui, emoji support, etc.
 
== Basic info on LED's ==
[http://www.fischtisch.de/uploads/Main/p287-hudson.pdf Using LED's as input]

Noisebridge - User contributions [en]

LED