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tCam-Mini rev4 - (onboard antenna) Wireless streaming thermal camera board
tCam-Mini rev4 - (onboard antenna) Wireless streaming thermal camera board
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tCam-Mini rev4 is a small wireless streaming thermal imaging camera designed by Dan Julio.
Android app for tCam-mini
iOS app for tCam-mini
tCam Mini in the News
- CircuitState - Open Source Wireless Thermal Imaging Module based on Flir Lepton 3.X and ESP32
- Hackaday - Hands-on review: tCam-Mini Wifi Thermal Imager
Quick Start Video Guide
tCam-Mini comes with a capable desktop application, running on Linux, Mac OS X, Windows, and iOS, making it easy-to-use, right out of the box. Custom applications running on any platform can easily communicate with tCam-Mini via a socket interface. Commands and data are transferred as easy-to-parse json strings.
Get the case to protect your tCam-mini and mount it on standard 1/4x20 thread tripods or GoPro compatible mounts.
Or 3D print one yourself: Download the files on GitHub
Capabilities
- The tCam-Mini camera exposes the full capabilities of the Lepton.
- v4 has a new hardware interface which allows the device to communicate directly with another micro-controller or SBC without having to use Wifi
- v4 now uses USB-C
- v4 comes with version 2.1 firmware
- The camera can operate in either Radiometric/TLinear (each pixel contains temperature data) or AGC modes (no temperature data in each pixel but better images).
- Simple json-based command set with communication of a TCP/IP Socket. Makes interfacing with the camera very simple from a custom application.
- AP or STA (client) Wifi modes (static or DHCP-served IPV4 address).
- Single image or streaming data modes.
- Control over sensor emissivity, gain and spotmeter location.
The companion desktop application makes it easy to use the camera and analyze the data from it.
- Display images or streams with multiple palettes.
- Save and load images or streams in files preserving the radiometric data for use later or by other applications. Two file formats: image and video (described in the github repository).
- Export images as jpg, png or tiff files.
- Copy current image to computer's clipboard.
- Histogram display and analysis of pixel populations.
- Spotmeter and up to four additional markers showing temperature at various points in an image.
- Graphing function to plot spotmeter and marker data over time.
- Graph baseline mode to allow comparing temperatures to a reference point in the scene (for example to compare a temperature to a blackbody constant).
- Export graph data in a text file for analysis by other programs.
- Print graph (or create a PDF on computers that can print to PDF).
Hardware Overview
- Espressif ESP32-WROVER-E Module (ESP32-D0WD0V3, 8 MB PSRAM, 8 MB Flash) with built-in antenna
- CP2102N-A02 USB to UART bridge with ESP32 boot loader control
- Multi-voltage power supply (3.3V, 3.0V, 2.8V, 1.2V)
- Dual color (Red/Green) status LED
- Factory Wifi Reset button
Open Source
The hardware and firmware design files are available in Dan's Github repository. The firmware is designed to be compiled using Espressif IDF tools and new code can be loaded via the built-in USB Serial port. The desktop application and precompiled binary files are also available for quick download at Dan’s website.
In Operation
Important Note! FLIR Lepton 3.x is NOT included and is required for this product to work, please add a 3.5, 3.0, or FS before checkout if you do not already have one.
