What USB does Arduino Use?? (USB1.1 or USB2.0)

Forum 2005-2010 (read only) Hardware Interfacing
10

this guy does....

DIY RS232-RS422
http://chaokhun.kmitl.ac.th/~kswichit/Rs422/Rs422.html

Also, the MAX3081 is a very easy-to use chip for TTL levels to RS422, and they will send you free sample chips too!

D