This DIY thermal camera is built around a Raspberry Pi and a $60 camera module
Adafruit MLX90640 24x32 IR Thermal Camera Breakout [110 Degree FoV] : ID 4469 : $74.95 : Adafruit Industries, Unique & fun DIY electronics and kits
MLX90640-D110 Thermal Camera - Waveshare Wiki
MLX90640 Thermal Camera Breakout Board (110°) - RobotShop
Amazon.com: MLX90640 IR Array Thermal Imaging Camera Module 32×24 Pixels 55° Field of View Camera with I2C Interface for Raspberry Pi/Arduino(ESP32)/STM32 : Electronics
Amazon.com: Waveshare MLX90640 IR Array Thermal Imaging Camera with 32×24 Pixels 55° Field of View Communicating via I2C Interface Supports Raspberry Pi/rduino(ESP32)/STM32, etc. : Electronics
Pimoroni MLX90640 support for RaspberryPi by BlackFury | Download free STL model | Printables.com
Raspberry Pi Pico - How to use the thermal camera - MLX90640 pico project - YouTube
MLX90640 Thermal Camera Breakout - Wide Angle - PiShop.us
Raspberry Pi MLX90640 IR Array Thermal Imaging Camera 32×24 Pixels 55° FOV for Arduino / ESP32
MLX90640 IR Thermal Camera Working with Raspberry Pi 4 - Hackster.io
Amazon.com: MLX90640 IR Array Thermal Imaging Camera 32×24 Pixels 110° Field of View I2C Interface 3.3V/5V Compatible with Raspberry Pi (ESP32) STM32 @XYGStudy (MLX90640-D110 Thermal Camera) : Electronics
The Easiest Thermal Camera Build You'll Ever See | Hackaday
i2c - I think my MLX90640 thermal camera is bad, can anyone confirm? - Raspberry Pi Stack Exchange
Raspberry Pi MLX90640 IR Array Thermal Imaging Camera 32×24 Pixels 110 FOV for Arduino ESP32 STM32 Spotpear
Python & CircuitPython | Adafruit MLX90640 IR Thermal Camera | Adafruit Learning System