hi,
first of all sorry for my bad english im from germany.
I also got a Rainbowduino (328 atmel), the problem is that i can´t connect to the Rainbowduino via mxControl…“No output device found…”
I just loaded successfully the Firmware.pde into the rainbowduino. Now all led are blink red.(normal?)
So the connection between my Windows 7 64bit PC and The Rainbowduino works and is still connected ( Via USB to FTDI Breakout board) when i try to draw something in mxControl.
Whats the next step? Whre is my fault? (exept for my english 
)
Can anybody probably post a Video/PDF/PICTURE tutorial ? it would help the German community a lot!
Thanks!