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mikroSDK Library

IR Grid 3 click

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Author: MikroElektronika Team

Last Updated: 2018-09-26

Category: Measurement

Downloaded: 31 times

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IR Grid 3 click is a thermal imaging sensor. It has an array of 768 very sensitive, factory calibrated IR elements (pixels), arranged in 32 rows of 24 pixels, each measuring an object temperature up to 300˚C within its local Field of View (FOV).

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mikroSDK Library Blog

IR Grid 3 click

IR Grid 3 click

Native view of the IR Grid 3 Click board.

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IR Grid 3 click

IR Grid 3 click

Front and back view of the IR Grid 3 Click board.

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Library Description

The library contains all the necessary functions for successful work with IR Grid 3 Click board.

Key functions:

  • void irgrid3_deviceConfiguration() - Functions for device configuration
  • void irgrid3_getPixelTemperature(float *Ta, float *pixelTemp) - Functions for reads Ambient temperature and pixel temperature

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes I2C module and USB UART for data logging
  • Application Initialization - Initializes driver init and IR Grid 3 module
  • Application Task - (code snippet) - Reads the temperature of all pixels and creates a pixel temperature matrix that logs on usbuart every 500ms
void applicationTask()
{
	
 
	 irgrid3_getPixelTemperature(&Ta,&pixelTemp[0]);

    mikrobus_logWrite("Ambient temperature:  ",_LOG_TEXT);
    FloatToStr(Ta,demoText);
    mikrobus_logWrite(demoText,_LOG_LINE);
    mikrobus_logWrite(" ", _LOG_LINE);
    mikrobus_logWrite("--- Pixel temperature matrix 32x24 ---", _LOG_LINE);


    for ( cnt = 0 ; cnt < 768 ; cnt++)
    {
        FloatToStr(pixelTemp[cnt],demoText);
        demoText[ 5 ] = 0 ;
        mikrobus_logWrite(demoText, _LOG_TEXT);
        mikrobus_logWrite("|", _LOG_TEXT);
        Delay_1ms();
        if(((cnt % 32) == 0) && (cnt > 0))
        {
            mikrobus_logWrite(" ", _LOG_LINE);
        }
    }
    mikrobus_logWrite(" ", _LOG_LINE);
    Delay_ms( 500 );

	}

Note: The sensor needs about 4 minutes for calibration.

Other mikroE Libraries used in the example:

    • I2C

Additional notes and information

Depending on the development board you are using, you may need USB UART clickUSB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

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