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tCam-Mini is based off of on-going work on tCam. It is designed to make radiometric data from a Lepton 3.5 thermal imaging module available via Wifi for remote access. It is supported by a desktop application, simple web server and python library.

tCam-Mini is open-source hardware and software. The design and documentation may be found here. Its development has been documented on Assembled, tested units are available for purchase from Group Gets. Please contact me for more information.
tCam-Mini is comprised of two components.
  1. Hardware design based around Flir Lepton 3.5 and an ESP32 micro-controller. The hardware design may also be hand-built using off-the-shelf breakout and development boards.
  2. Firmware for the ESP32.


  • 160x120 pixel Radiometric Thermal Imaging Camera (Flir Lepton 3.5)
  • USB interface for power, firmware updates and diagnostic output
  • Wifi interface capable of either AP or client modes for remote access
  • Simple json-based packet interface
  • Time-lapse or streaming modes


  • High temperature event monitoring
  • Device thermal monitoring
  • Structure thermal leakage analysis
  • Wildlife detection and monitoring
  • Thermal biometric monitoring
  • Remote accessible camera for AI and data processing applications

Software Support

  • Desktop Application for Linux, OS X and Windows.
  • Simple recording web server
  • Python library
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Firmware upgrades and software packages may be found in the github repository and as individual downloads below.
Firmware version 2.0 binary files for Revision 3 ESP32 chips with 8 MB Flash and the Windows-based programming utility. This package may be used to upgrade firmware in PCB-based tCam-Mini cameras such as those from Group Gets.
Firmware version 1.3 binary files for both Revision 1 and Revision 3 ESP32 chips and the Windows-based programming utility. This package may be used to upgrade firmware in existing devices or load firmware into hand-built devices and includes instructions for use.
Desktop application version 2.0.0 allowing viewing, file storage from images, OTA FW updates and graphing of up to five temperature points in an image. Documentation can be found in the github repository.