Hi, I was able to setup my project with not to many difficulties. I run a pure data patch to catch sound and make some control to go thru the arduino and remote led, motor .... Now, I want to make something standalone, so i start to load the patch when I power on. For that I make a script and modify rc.local to open this script. And it's work ! Ok, so i was thinking, everything it's ok ... But when i unplugged everything (screen and ethernet, because i use remote connection), wireless mouse&keyboard ..... The computer don't boot. I think it's stuck on the HDMI detection on the boot, but i'm not sure. I have access to the board tomorrow only for a few hour. I can make a serial connection to verify if it's the HDMI detection. But to be more efficient have you some advice ? play with setenv ? Thanks in advance !!