PURETHERMAL-3-FS1

PURETHERMAL 3 TELEDYNE FLIR Lepton® Smart I/O Module October 2022 - Datasheet Revision 2 The PureThermal 3 FLIR Lepton Smart I/O Module is a hackable thermal webcam module for the FLIR Lepton Longwave Infrared (LWIR) camera core. It ships preconfigured to operate as a plug-and-play UVC 1.0 USB thermal webcam that will work with standard webcam apps such as VLC Media Player on PC, Linux, Mac, and Android. Its reference firmware is open source for customized applications. We have also created an open source software application, GetThermal, to view Lepton data on x86 Linux and macOS platforms. For computers using a Microsoft Windows OS you can use the FLIR Lepton User App on the Lepton Getting Started page under the Downloads section. GetThermal as well as the FLIR Lepton User App with a PureThermal 3 (PT3) both support the radiometric mode of Lepton 2.5 & 3.5. Sample Lepton 3.5 thermal images showing a finished 3D printed object imaged with different colorization settings. FEATURES • • • • • • • • • • • Powered via USB-C or VIN Get Thermal video over USB right out of the box using freeware apps like VLC on Mac, Linux, Windows, or Android 9 Hz color video over USB using the USB UVC class STM32F412 ARM microprocessor. Execute on-board image processing without the need for an external system Through-holes for GPIO and peripheral breakouts to easily attach other devices Open source reference firmware is on the GroupGets GitHub Device Firmware Upgrade (DFU) the STM32 ARM MCU over USB Debug via JTAG through a Tag-Connect EC10, an ARM20-CTX, & ST-Link V/2. UART, I2C, and GPIO Expansion via standard 0.1” holes Compatible with all current 2.x and 3.x Lepton cores Compact 25.8 x 28.9mm form-factor that can be embedded into other modules or inconspicuously housed as a standalone web, research, or security camera GROUPGETS.COM APPLICATIONS • • • • Thermal imaging Non-contact temperature measurements Motion sensing Moisture or leak detection • • • Night vision Gesture recognition Electrical inspection SPECIFICATIONS Power Inputs Input Voltage Range (VIN) Operating Voltage (Logic level) Lepton Core Support Expansion Processor Thermal Video Outputs Part Number RoHS Compliant USB-C, VIN 5.5-3.4 VDC, 350mA peak draw 3V Lepton 2.x, 3.x, FS I2C, UART, GPIO, JTAG, SPI STM32F412 (1M Flash, 512K RAM) UVC over USB, VoSPI PURETHERMAL-3 Yes Breakout Pins Pin # 1 16 15 2 3 4 5 6 7 8 9 10 11 12 13 14 Label GPIO 1 GPIO 2 GPIO 3 RST CS SCK MISO MOSI 3V GND GND VIN SDA SCL RX TX STM32 Port PC15-OSC32_OUT PA0 PH1-OSC_OUT NRST PB12 PB13 PB14 PB15 PB9 PB8 PA3 PA2 Lepton Type Notes 3V, Digital, Analog, Interrupt I/O 3V, Digital, Analog, Interrupt 3V, Digital, Analog, Interrupt Reset LOW to reset CS 3V Logic Levels SCK SPI 56Ω resistor on output. MISO MOSI OUTPUT GND INPUT 5.5-3.4 VDC, 320mA peak draw SDA I2C 3V Logic Levels SCL Serial - Page |2 GROUPGETS.COM Power Consumption With Lepton 3.X or FS Video over USB Shutter close (1 second event) No Lepton USB Power - Average (mW) 290 ±20 985 ±200 106 ±10 VIN at 3.7V - Average (mW) 310 ±20 955 ±200 104 ±10 Dimensions Page |3 GROUPGETS.COM APPLICATION INFORMATION Compatible applications include: • • • FLIR Lepton Application for Windows (above image on left). GetThermal for Mac OS and Linux (above image on right). VLC, and many other video players. UVC-Capture Examples The PureThermal FLIR Lepton development board by GroupGets supports the USB video class (UVC), and this makes it very easy to capture thermal imaging data from a host PC using standard tools and libraries. If you want to prototype quickly, your application demands increasing processing power, or you simply don't want to hack on the firmware, check out these examples to get started. For more information see our purethermal1-uvc-capture examples GitHub repository: https://github.com/groupgets/purethermal1-uvc-capture FLIR Lepton Windows SDK SDK for Windows 10 is provided below. The FLIR Windows Lepton Software Development Kit (SDK) is a software package that you’ll include in your project. It is a .NET library for communication over the UVC protocol. These commands allow you to execute commands, pull serial number information, and other useful functions of the camera component. Make sure to visit the Get Started Guide to learn to effectively use the SDK. https://lepton.flir.com/sdk/ Programming PureThermal 3 USB in DFU mode If you're not compiling from source, you can download the firmware from our PureThermal Firmware releases section here and substitute the .bin file in the .tgz for main.bin in the commands below. Page |4 GROUPGETS.COM Entering bootloader (DFU) mode 1. 2. 3. 4. 5. Plug in a USB-C cable. Press and hold the BOOT button. Without releasing BOOT, press and release RST. Release BOOT. When you successfully enter DFU mode, the indicator LED will stop blinking and dim to half brightness. Linux / MacOS Flashing Install dfu-util: sudo apt-get install dfu-util or brew install dfu-util or your system's package manager. Then run: dfu-util -a 0 -D main.bin -s 0x08000000 or use: scripts/flash.sh Page |5 GROUPGETS.COM Windows Flashing DfuSE USB drivers: https://www.st.com/en/development-tools/stsw-stm32080.html win32 DFU tools https://files.groupgets.com/purethermal/win32_dfu.zip To install DFU drivers, may need to use the device manager to select the st drivers extract win32_dfu.zip to the current folder. win32_dfu\bin2dfu --i main.bin --a 0x08000000 --o main.dfu win32_dfu\DfuSeCommand -c -d --fn main.dfu or use: scripts/make_and_flash.bat Alternate Flashing Method (not over usb) The latest PureThermal firmware release is available here. Windows Flashing Using the hardware below: • ST-Link V2 • TagConnect EC10-IDC-050 (normal orientation) • Olimex ARM-JTAG-20-10 adapter or similar 1. 2. 3. 4. 5. Download the STM32 ST-LINK Utility (STSW-LINK004) Install STM32 ST-Link Utility and then open the software. Plug the PureThermal 3 into USB and insert the Tag-Connect EC10 connector. Select "Target" then "Connect" to connect the software to the PureThermal device. Next select "File" then "Open file...", now navigate to the folder which contains the PureThermal firmware and select the main.dfu file. 6. Finally click "Target" then "Program & Verify...", make sure that the "Reset after programming" box is selected then press the "Start" button. Page |6 GROUPGETS.COM FUNCTIONS LED: When plugged in to micro-usb power and a Lepton is inserted in the socket LED will flash slowly. When video is being transmitted to the viewing program, LED will flash more rapidly. PureThermal 3 Silkscreen Diagram BOTTOM TOP Page |7 GROUPGETS.COM Revision History Revision 2 – October 2022 • • • • • • Added to applications list More details in Specifications table Added breakout pin table Added Power consumption table Improved programming edge connector diagram and added pin numbers Added revision history Revision 1 – August 2022 • Datasheet created Page |8 GROUPGETS.COM