PID line follower with 5" robot chassis

Posted by Claire on 18 April 2014

This PID line follower, originally featured in this Let’s Make Robots post by user Enigmerald, uses our 5" Robot Chassis along with 30:1 MP micro metal gearmotors, extended brackets, and our 42×19 mm wheels. Our QTR-8RC Reflectance Sensor Array is used to sense the line and our TB6612FNG carrier, along with an Arduino-compatible controller, is used to control the motors. A diagram of how everything is connected and the code for the robot are available in Enigmerald’s post. The post also has a link to a basic tutorial on PID tuning using the QTR array.


Thanks for mentioning my project here at Pololu!
You can also find the robot project at my website :
And the tutorial :
It looks like there are a lot of other cool robots on your site. Thanks for sharing it!

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