Hi hms-electronics world! the my board roku-c-16-dmx is connected to brightsign hd 1010 and through this link http://forums.roku.com/viewtopic.php?f=19&t=31022 I can send command dmx (ex.string = "hms-dmx:port1;port2;255;0;0;0" I have a dmx_ch1 full and dmx_ch2,3,4 off). I can recive g...