The next stage of the project is to use a Raspberry to drive the 6 Arduino's. I plan to use the output of Glediator as the input files. I am able to see the /dev/ttyUSB0 through /dev/ttyUSB5 devices. I'm trying to write a C++ program on the Raspberry Pi to send the data. I know I'm sending data as I see the Rx/Tx lights. But the Arduino does not always do what I expect it to do.