This solution include:
Robot design in LDD
Robot program in EV3-G
- Sensor calibration
- PD follow line
- smart myblock

Video of the robot doing mission
Video of "How To Calibration"

This solution uses:
1 EV3
2 Large Motors
2 Medium Motors
4 EV3 Color Sensor
 
Video of robot doing mission: https://www.youtube.com/watch?v=63-4QIJfBe4