Hi i want to build a standalone USB Device (using the arduino as the SPI) that can control an RGB light system for a computer (similar to AlienFX but using USB instead of PCI). Now for this i obviously need to learn about USB Protocols USB Interface Compatible Chips that can be used with USB and Arduino SPI
And the main thing i was wondering is, if someone has done this or something similar (just maybe a usb interface). The reason i want to build my own board for this is i don't want to just leave my Arduino in my computer as the actual device, and i also want to build my own little board as well.
Sorry for the possibly newbish question and when i start i will keep you guys/gals posted (link to my blog).
EDIT: After looking around some more i found this http://3.bp.blogspot.com/_R7o3lst9P4U/S3ZTB7oD9zI/AAAAAAAAAYY/efnit-tzCIA/s1600-h/18f4550_usb_proto_basic.png Which looks like it will do the job (especially being able to build a program for it using a library posted on the blog) Any ideas are always welcome.