Line following robot

Thread Starter


Joined Feb 10, 2014
This is a project of building a robot, which follows a blue line with one side of track being on white background and the other on Black background. The robot cant have any programmable parts.

The plan is to use three sensors which leads to a comparator which then leads to H bridge to drive the two motors.

Can anyone explain how to connect the three sensors to comparator and comparator to the h Bridge to drive the motors.

Thanks For the Help


Joined Oct 18, 2012
See here.

You two should get together and tackle this project together!;)

Are you suggesting that all three sensor outputs go to a single comparator?

Post some visuals of what you are describing...