Line Following LEGO WeDo 2.0 Robots

In this video, 2 line following robots models are built using the LEGO WeDo 2.0 core set (#45300). A distance sensor is used to detect if the robot is on the black line or the white background. Then a changeover mechanism is used to turn the robot back toward the boundary between the black line and the white background.

More information on changeover mechanisms can be found here:
https://youtu.be/K99q6C67Nto?t=64
https://www.youtube.com/watch?v=x8_RxdNajds

The line following robots are based on the following videos:

https://www.youtube.com/watch?v=bGZHUkUBVBE&list=PL1Qnm7DSb4VUqu2jBKg8VripwuHrt-1S0&index=12

https://www.youtube.com/watch?v=Q8Ztna1FoQo&t

Видео Line Following LEGO WeDo 2.0 Robots канала Build with Don