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 ...

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 Watch this video on YouTube .

The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator, gives ...