The application allows to “simulate fever” adding ☌ to the temperatures that are in the range of human temperature.
The application is available in the Github repository and illustrates how to measure the person temperature and send visual alarms in case of possible fever. In this strange period of COVID19 an useful application for a thermal image is to measure the human temperature and alert in case it overcomes the “security value” of 37.5☌. The repository contains also a real world application that illustrates how to convert raw data values to real temperature values. The repository contains a sample demo that illustrates how to control the sensor features, how to acquire thermal images and how to display them using OpenCV. Library and examples to connect the FLIR Lepton3 thermal camera to Nvidia Jetson embedded boards
The first is temporary and the default buffer size will be restored after the next reboot, the second is permanent. To change the size of the SPI buffer we have two methods.
Lepton3 requires 20KB of buffer to retrieve a full segment of data that composes the thermal image. The default buffer size use for SPI communication is set to 4096 bytes by the The operation is quite simple, there is a very good guide to follow and I will not replicate every step here, just go to visit the JetsonHacks blog and follow the guide of my friend kangalow about using the Jetson-IO tool to enable the SPI1 port available on the PINS 19,21,23,24,26 of the expansion header (J41) of the NVIDIA ® Jetson™ Nano Developer Kit. The first operation to perform is enabling one SPI port on the Jetson™ Nano. If you are curious about the rear single pin… it’s a GND test point, useful to connect the GND of the probe of the oscilloscope to analyze the status of each signal.
Asus XTion PRO Live: OpenNI2 compilation and install instructions.MyzharBot v3.1.1 – Make the chassis by laser cutting service.MyzharBot v3 – an early working project.An interview about MyzharBot by Radio Stonata.Lepton Parameter item Parameter value Effective Frame Rate 8.7Hz Input Clock 25-MHz Pixel Size 12µm Scene Dynamic Range Low Gain Mode: -10 to 400☌ High Gain Mode: -10 to 140☌ Spectral Range 8 µm to 14 µm Thermal Sensitivity <50 mK(0.050℃) Input Supply Voltage 2.8 V, 1.2 V, 2.5 V - 3. Lepton Input Supply Voltage: 1.2V,2.8V,2.5V - 3.1V IO.Lepton Low operating power - 150 mW (operating), 650 mW (during shutter event), 5 mW (standby).Note: If it worked for long hours, Lepton will heat up a little. The effective image generate by the Lepton sensor is 160×120, but you can process the image thru program and display a different resolution. FLIR features the latest FLIR Lepton 3.0 longwave-infrared (LWIR) camera core, get two times the resolution and 4x the pixels of the previous 2.x generationįLIR is covered by a 3D printing case, makes it a perfect functional bottom for non-contact temperature measurement, compatible with M5Core and can be controlled via I2C protocol.