The electronics for the robot is kept as simple as possible. The electronics board is split into to parts.
The main board that has the MCU, basic MCU support circuit, motor driver and indicator LEDs.
The line sensor board that is connected at the bottom part of the robot.
These two units are neatly connected using a FRC cable(see this).
The schematic for line sensor array is given in this article.
You can purchase both the circuit boards made using high quality PCBs and parts. Simply follow the link. Our store accept online payment using debit cards, ATM cards and Net Banking. The products will be delivered to you door steps within 3-5 days any where in India using quality courier service.
Fully assembled and tested main board.
Fully assembled and tested line sensor board.
other wise you can build the circuits on a general purpose PCB or breadboard. But those are lot messy, bulky and does not fit well in the chassis. Beginners should avoid using them. You can save lots of time and pay more attention in the program part that is more important.