After some searching, I ended up using a microcontroller and a piece of code borrowed from the web that I tweaked and adapted. The microcontroller-based concept was chosen because I wanted to scale ...

The build uses Panasonic’s cheap “Grid-EYE” infrared array as the thermal sensor, in this case, ... It’s a simple matter of hooking up the Grid-EYE sensor to the Arduino Uno over I2C, ...