A quick search found several versions of infrared line tracker sensor modules that met or exceeded my demands, but I picked the cheap YL-70 4-channel line tracker module! The YL-70 line tracker sensor ...

The HW-006 (V1.3) line tracker sensor module based on TCRT5000 an infrared reflectance sensor. This is usually mounted at the bottom of a line following robot chassis. ... HW-006 Module – Arduino ...

Krejci’s design, while affordable, offers an 8×8 resolution, which is the maximum output of the AMG8833 infrared sensor array. DIY Arduino thermal camera. ... Infrared sensor module.