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A talk I gave at Geekdom SF, Rackspace's coworking space in SOMA. It focuses on the fun of connecting programmable LEDs (WS2812) to the Fadecandy controller. I talk about where to get LEDs and the Fadecandy board (Adafruit, RGB 123), how the LEDs are addressed, how to send commands with Node, and Fadecandy's specialized temporal dithering algorithm.
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BLINKY LIGHTS
AWESOMEARE
AMY LEE - CODAME
WS2812 LEDs
+Fadecandy
=DELICIOUS
- Hardware- Demo- Software- Demo- Q&A
20 MinuteEdition
me.about( )
”Amy Lee” == ”ANI”
musician, coder, etc.
CODAME events, media, iOS App
Spring 2014 Geekdom Artist in
Residence
WeidongYang
Summer2014
LEDs
etc…
Fadecandy
• Controller• USB• 512 LEDs
max**64 LEDs, 8 per “string”
USB+power
data out
ground
[0][1][2][3][7]
[8]
[63]
[0]
[63]
[64]
[256]
[511][319]
[127]
Let’s talk toFadecandy!
… the hard way
echo -ne '\x00\x00\x00\x09\xff\x00\x00\x00\xff\x00\x00\x00\xff' |nc localhost 7890
echo -ne '\x00\x00\x00\x09\xff\x00\x00\x00\xff\x00\x00\x00\xff' |nc localhost 7890
channel“set pixels” 9 data byes
RGBbytes
send via netcat
Lappy486% cd binLappy486% ./fcserver-osx
[1399427197:2922] NOTICE:Server listening on127.0.0.1:7890
Lappy486% cd examples/nodeLappy486% node rings.js../layouts/grid8x8.json
Fadecandy =
awesomedithering
Temporal dithering
[demo]
May 31 @ Tenderloin
PLAYGROUND
codame.com
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