THERMAL IMAGING // OPEN-SOURCE DEVELOPMENT BOARD

PureThermal 1 — FLIR Lepton Thermal Camera Development Board

The GroupGets PureThermal 1 is an open-source hardware development platform for the FLIR Lepton LWIR thermal camera core. It combines an STM32F411CEU6 Arm Cortex-M4 microcontroller, a socket for FLIR Lepton 2.x or 3.x modules, a Texas Instruments TMP007 infrared thermopile reference sensor, and a Li-Ion battery charger. Pre-programmed firmware streams thermal video over USB UVC or UART without host drivers.

Start Similar Custom Project → All Reference Projects 28-Year Portfolio GroupGets Store Here ↗ STM32F411CEU6 ↗

Architecture & Technical Specifications

Hardware Architecture & Features

STM32F411CEU6 Arm Cortex-M4 microcontroller (100 MHz, 512 KB Flash, 128 KB SRAM).
Socket for FLIR Lepton 2.x (80x60) and FLIR Lepton 3.x / 3.5 (160x120) LWIR cores.
Onboard Texas Instruments TMP007 infrared thermopile sensor for ambient reference calibration.
Micro-USB connector, single-cell Li-Ion battery charger, external 5 V input pads, and ON/OFF switch.
100-mil pitch expansion headers for UART and I2C plus an 8-pin header for an ESP8266 Wi-Fi module.
Built-in USB DFU bootloader (no JTAG probe needed for flashing) plus an FFC header for JTAG/SWD.

Firmware, Software & Integration

Open-source purethermal1-firmware with example projects for USB UVC color video and UART streaming.
Driverless USB UVC webcam enumeration on Windows, Linux, macOS, and Android.
I2C command and control driver to configure FLIR Lepton internal telemetry, AGC, and FFC shutter modes.
I2C reference driver to read ambient and object temperatures from the onboard TMP007 thermopile.

Hardware Photos & Figures (1)

PureThermal 1 development board showing STM32F411CEU6, FLIR Lepton core, TMP007 thermopile, and expansion headers.

Video Demonstrations

YouTube Video VIDEO ↗

Datasheets, Source Code & Reference Links

GroupGets Store Here EXTERNAL ↗ STM32F411CEU6 EXTERNAL ↗ Lepton PAGE → TMP007 datasheet EXTERNAL ↗ ESP8266 EXTERNAL ↗ Datasheet EXTERNAL ↗ GroupGets Product Page EXTERNAL ↗ Forum Page EXTERNAL ↗ GroupGets Store Here EXTERNAL ↗ Github Source EXTERNAL ↗ Hackaday EXTERNAL ↗ PureThermal Mini Smart I/O Module RELATED → FLIR Lepton Breakout Board RELATED → FLIR Lepton Pocket Demo Camera RELATED →