makerfaire.com:

Maker Faire Bay Area 2009
The Rail-O-Graph Electromechanical Messaging Device

MAKE Demos , Saturday 2:00 PM - 2:30 PM Make: TV host John Edgar Park and Usman Muzaffar demonstrate the Pony Express that never was: an Arduino-driven model train that powers a chat room by physically tapping messages (a la Morse code). Plus: how to make robots touch each other.

MAKE Demos , Sunday 12:45 PM - 1:15 PM Make: TV host John Edgar Park and Usman Muzaffar demonstrate the Pony Express that never was: an Arduino-driven model train that powers a chat room by physically tapping messages (a la Morse code). Plus: how to make robots touch each other.

Make: TV host John Edgar Park and Usman Muzaffar will demonstrate their latest innovation, the Pony Express that never was. The Rail-O-Graph is an Arduino-driven train that powers a chat room by physically tapping messages (a la Morse code) to connect two terminals. Topics covered include a whirlwind tour through the history of serial communications, the perils of remote collaboration, and how to make robots touch each other.

Web site: http://jousmanindustries.blogspot.com/

About the Maker(s)

John Park [
John Edgar Park is host of the Maker Workshop on Make: television, a character technical director at Walt Disney Animation Studios, and a contributing writer for MAKE magazine.
http://www.jpixl.net

Usman Muzaffar
Usman Muzaffar has worked as a software engineer for big and small companies in Silicon Valley, and currently runs services and support at Electric Cloud. He finds it exceedingly difficult to resist requests from old friends to write firmware for strange contraptions.
http://jousmanindustries.blogspot.com/