Line tracking car with Arduino, which attempts to follow a black duct tape line on a white background.

• Two colour sensors check if they are above the line or not
• This is because readings would vary base on the surroundings and the sensors are low quality
• If one side is off, it corrects the motion by turning until both are on the line, to prevent the car from "escaping"
• If both sides are similar, the car is on the line, or the sensors are placed accross the line, so it moves forward

• Sets threshold values for state detection
• 100 readings at 20 millisecond intervals
• Average of "white reading" and "black reading"
• Car has to be placed on pure white, followed by pure black
• This process can be ignored by setting the hardcoded values and setting calibrate to 0 instead of 1

• TCS230 / TCS3200 Colour Sensor
  • Left
    • S2 - Digital Pin 2
    • OUT - Digital Pin 3
  • Right
    • S2 - Digital Pin 4
    • OUT - Digital Pin 5
  • Only one input is used as it is black and white
• L9110 Motor Driver
  • IA2 (A-IA) - Analog Pin 0
  • IB2 (A-IB) - Analog Pin 1
  • IA1 (B-IA) - Analog Pin 2
  • IB1 (B-IB) - Analog Pin 3