U016

Thermal Camera Unit (MLX90640) SKU: U016 THERMAL is a thermal imager Unit contains a thermopile sensors named MLX90640. It can be used to measure the surface temperature of an object and form a thermographic image by a temperature gradient composed of different surface temperatures. The image resolution is 32 x 24. The MLX90640 Infrared (IR) sensor array combines high resolution and reliable operation in harsh environments, providing a cost-effective alternative to more expensive high-end thermal imaging cameras. Unlike the case of a microbolometer, the sensor does not require frequent recalibration, ensuring continuous monitoring and reducing system cost. The field of view (FoV) option includes a standard 55° x 35° version and a wide angle version of 110° x 75° for distances up to 7m. This Unit is 110°×75° FoV, also known as the BAA package. The Unit communicates with the M5Core through the Grove A interface, IIC address is 0x33 Product Features • • • • • • • • Operating Voltage: 3V ~ 3.6V Current Consumption: 23mA Field of View: 55°x35° Measurement Range: -40°C ~ 300°C Resolution: ±1.5°C Refresh Rate: 0.5Hz-64Hz Operating temperature: -40°C ~ 85°C Two Lego-compatible holes Kit includes • • 1x THERMAL Unit 1x Grove Cable Application • • • High precision non-contact temperature measurements Intrusion / Movement detection Visual IR thermometers Example Arduino IDE The code below is incomplete. To get complete code, please click here。 /* MLX90640.ino */ #include #include #include "MLX90640_API.h" #include "MLX90640_I2C_Driver.h" // declaration uint16_t eeMLX90640[832];//32 * 24 = 768 int SetRefreshRate; // initialization /* load system parameter */ MLX90640_DumpEE(MLX90640_address, eeMLX90640); /* load extraction parameter */ MLX90640_ExtractParameters(eeMLX90640, &mlx90640); SetRefreshRate = MLX90640_SetRefreshRate(0x33, 0x05); M5.Lcd.fillScreen(TFT_BLACK); infodisplay(); // display heat map M5.update(); infodisplay(); interpolate_image(reversePixels,ROWS,COLS,dest_2d,\ INTERPOLATED_ROWS,INTERPOLATED_COLS); Schematic PinMap M5Core (GROVE A) GPIO22 GPIO21 5V GND THERMAL Unit SCL SDA 5V GND https://m5stack.com/collections/m5-unit/products/thermal-camera/12-99-19