1) Replacing IR sensors with Magnetic Sensors, they are far reliable.
2) Isolating the MC to prevent the program from erasing
3)Smaller track model.
4)Track switching is easier than the first one
5)DC motor with limit switches are used to cut the cost.
6)Soldering with copper wire without the outer covering/sheath
7)Using PLYWood as a base instead of card board.
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