Hi, I’m Paul Stoffregen, and I’d like to show
you a new Arduino library I’ve been developing for Teensy
3.0. [title: http://www.pjrc.com/teensy/td_libs_OctoWS2811.html] It uses the most affordable WS2811 LED strips.
Other libraries like FastSPI already exist, so why
another? First, this drives 8 LED strips at once instead
of just one, so the update rates are 8 times faster. It’s also extremely efficient, using DMA transfers
and double buffering. There’s also a frame sync feature,
but first lets see it play video. [video: Belen Rodriguez, vimeo.com/20784267] This demo uses nearly 2000 LEDs, driven by
two Teensy boards. The frame sync I mentioned earlier
is this wire. [camera pans along frame sync wire] Each Teensy drives 1000 LEDs. Any number
can be linked for fast refresh and precise timing. Let’s try another video fine details, where
you’d want a LOT more LEDs. [video: Sintel Trailer, www.sintel.org] Something this youtube video can’t show is
the incredible brightness of 2000 LEDs. In fact, I had to
buy a special filter just to get my camera to shoot these
clips. [screenshot of movie2serial software] The library includes this video application.
I’m hoping to someone might contibute a gamma correction
curve? I’ll leave you with one more really bright video
to demonstrate [video: Rachel Platten, “Nothing Ever Happens”,
vimeo.com/12300119] Thanks for watching, and if you build a giant
LED project, please send photos.