Hello: You can check out this page: http://www.salokin.demon.co.uk/ti85.htm . This page has instructions/schematics/info on how to build cables of all types. It gives instructions for all TI calculators, too. (Not just TI-85.) Good Luck! Ulmeri wrote: > I'm looking for schema for a serial cable to connect a TI-82 to a PC. > I use Graph-Link. > > Ulmeri, the Black Daemon > http://www.mygale.org/01/ulmeri/