Inspired by a maker show "Netzbasteln" of the german radio station DLF Nova I started realizing my own thermal camera. For long time this was avery expensive fun but since a few week this is affordable.
Far Infrared thermal camera MLX90640
Espressif ESP32-Wroom-32D
03962A/TP4059
MT3608 StepUp Boost Converter
Display ILI9341 320x240
looks like you have a working prototype ! what thermal sensor are you using ?