there r a dmx512 decoder:SC-008/9(H/L) http://www.seachip.com.cn/co/Pictures/SC-00xxV1.1.pdf http://www.seachip.com.cn/ support@xxxxxxxxxxxxxx the SC-008/9(H/L), the 8 or 9 channels pwm(100hz, 8bit) is so good for led.