У вашего броузера проблема в совместимости с HTML5
Visit http://www.crazy-logic.co.uk for more interesting stuff.
Info on DMX and DMX frames,
http://www.dmx512-online.com/whats.html
http://www.dmx512-online.com/packt.html
http://en.wikipedia.org/wiki/DMX512
Transiever datasheet
http://www.ti.com/lit/ds/symlink/sn75176b.pdf
Origional ArDMX page on Arduino.cc.
http://playground.arduino.cc/DMX/Ardmx
My Sketch and cpp files.
http://www.crazy-logic.co.uk/projects/lighting/receiving-dmx-on-arduino-with-ardmx