Line Follower With Arduino Programming

http://www.electroschematics.com/11058/atmega8-line-follower-robot-lfr-project/

Learn Arduino Proggramming

http://playground.arduino.cc/uploads/Main/arduino_notebook_v1-1.pdf

Robotics Explosion at IIT, Featuring Pushup Robot

https://www.youtube.com/watch?v=zfsHkXtTrro

Line Coding and Modulation Technique of Digital Signal

http://web.stanford.edu/class/ee179/handouts/slide18.pdf

Follow this link
Line Coding Requirements/Desiderata
◮ Small transmission bandwidth
◮ Power efficiency: as small as possible for required data rate and error probability
◮ Error detection/correction
◮ Suitable power spectral density, e.g., little low frequency content
◮ Timing information: clock must be extracted from data ◮ Transparency: all possible binary sequences can be transmitted