Pixy Lego is a smart vision sensor you can quickly ''teach'' to find objects. It saves you time by only outputting the object data you're interested in. It connects directly to Lego
Announcing: Pixy2 for Lego Mindstorms – PixyCam
Lego Meets Pixy. How to Connect Your Inexpensive Camera… | by J3 | KidsTronics | Medium