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This is a simple Arduino-based object-avoiding robot. It uses two inexpensive ultrasonic distance sensors, an Arduino Uno, four continuous rotation servos to drive, and one 180 degree servo to rotate the top distance sensor to the left, center, and right positions. For its frame, I used a 1ft x 1ft square piece of wood I got from a local crafts store. Total cost apparently adds up to around $100. I didn't realize I spent that much on this thing until I listed the parts out for this post. Oh ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/arduino-object-avoiding-robot