This robot can move around on a tabletop without falling off the edge. Its smarts are provided by an AVR ATTINY microcontroller. It uses two edge sensors composed each of a discrete IR transistor and a discrete IR LED. The controller board is built with the idea that it could be re-purposed for other robot configurations.
Both laser cut and scroll saw / drill versions are included in this instructible.
The video below shows the Tiny Wanderer in action:
The Dallas Personal Robotics Group (DPRG), founded in June of 1984, is one of the nation’s oldest special interest groups dedicated to the development and use of personal robotics. DPRG members are interested in autonomous robots, movie replica robots, vintage robots, robot and kinetic art, as well as just about anything involving electronics, technology, or science.
The DPRG invites you to come visit if your travels take you to the Dallas, TX area. They meet every Tuesday night and every 2nd Saturday of the month,. see http://www.dprg.org for location details.