Yup it is robot.Yup it is line following robot.Yup it is 100% home made and cheap(15$ or Rs 600 approx) .Yup it is a path finder.And it has a little artificial intelligence.It is 8051 based.
This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/a-simple-line-follower123