Simple robot how-to

David writes –

This tutorial will show you how to make a very simple robot that will avoid obstacles on the ground. It uses no microcontrollers, no servos, and there is no need to program. The simple design make its an ideal project for those wanting to tryout robotics and also makes a great weekend project. After building one you can probably make a second one in less than 10 minutes.

Simple Robot How-To – [via] Link.