Line Follow module
Add this IR line following module to enable your robot to follow along a blakc and white line
There are a couple of different modules available for line following that are based on infrared:
The REES52 has the IR sensor point straight down, which is what we need for the SMARS line following add-on.
The TCRT5000 is very similar to the REES52 but has the sensor at a right angle to the PCB.