Description:

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 area: -40°C ~ 300°C
• Resolution: ±1.5°C
• Refresh Rate: 0.5Hz-64Hz
• Operating temperature: -40°C ~ 85°C
• Two Leigo-compatible holes

Package Include:

• 1x THERMAL Unit
• 1x Grove Cable

APPLICATION:

• High precision non-contact temperature measurements
• Intrusion / Movement detection
• Visual IR thermometers

Related Link:

• Offical Video

• Forum

• Datasheet - MLX90640

EasyLoader

click to download EasyLoader

“Burn” to start burning.

 

3.The CP210X (USB driver) needs to be installed before the EasyLoader is burned. Click here to view the driver installation tutorial

Example:

1. for IDE

The code below is incomplete. To get complete code, please click here

  /*      MLX90640.ino  */  #include <M5Stack.h>  #include <Wire.h>  #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);Copy to clipboardErrorCopiedCopy to clipboardErrorCopied

Schematic:
 

PinMap:

M5Core (GROVE A)	GPIO22	GPIO21	5V	GND
THERMAL Unit	SCL	SDA	5V