Some readers may recall building a line-following robot during ... [Blake] improved sensor precision and motor control, turning a bumpy ride into a smooth glide. The IR sensor array, which on ...

[Stefan] beefed up the robot with a BNO055 module to determine orientation, an APDS-9930 proximity sensor, as well as four CNY70 IR proximity sensors on the bottom, used for line-following.

The little robot ... any line it's put on. When it meets a branching path, it picks one randomly. It looks very cute as it scoots along, but that's just the beginning. Since Ozobot's sensor ...