I have created a new line follower model. Some of my previous models were rather large, long and used decorative parts that added to the weight of the robot. This design removes all unnecessary parts to minimize the weight and mass that is moved while turning. You can view the step-by-step building instructions online and download the LXF-File HERE.
To view and modify LXF-Files you need LEGO Digital Designer.
You can download it HERE for free.