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tCam-Mini and Desktop App pushed to GitHub

A project log for Lepton 3.5 Thermal Imaging Camera

Documenting my experiments with the FLIR Lepton 3.5 thermal imaging camera.

Dan JulioDan Julio 02/04/2021 at 22:020 Comments

Big news today.  I pushed the design and code for tCam mini to the github repository  (new section: ESP32).

I've also been busy putting the finishing touches on the companion desktop application and binaries for it are also available.   Lots of bug fixes and three useful new features.

  1. Support for video files comprised of multiple radiometric images from the camera.  The tCam stream function can now stream at different rates enabling time lapse thermography.
  2. Radiometric markers to monitor temperature in more than one location in a scene.
  3. Graphing of the spotmeter and radiometric markers over time.

The menu bar on the main window also got a slight layout change so it looks better on Linux (the app runs on OS X, Windows and Linux).

Graphs can be made from real-time streaming data coming from a camera or they can be made from a video file.  In this case from the file "pi0_5sec_heading.tmjsn" that was created from a streaming session with an image every 5 seconds of a Pi 0 mounted on my Pi Platter heating up and then cooling down.

Finally I added a U.FL connector to my prototype board and tested with an external antenna.  It provides better performance (higher streaming rates).  I can now get between 6-7 frame-per-second which may be near the limit of the ESP32 WiFi/network stack.

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