View source for Infrared Thermometer MLX90614 Breakout Board

== Description  ==
This is a MELEXIS MLX90614ESF-BAA-000-TU-ND non-contact infrared thermometer for use with Arduino, or any microcontroller that can communicate with it through it's I2C interface.<br>
'''Model:[http://www.elecrow.com/infrared-thermometer-mlx90614-breakout-board-p-1378.html SPM90614S] '''

[[File:Infrared Thermometer MLX90614 Breakout Board.jpg|400px]]

== Features  ==

*Small size, low cost
*Mounted on a breakout board with two types of pins
*10k Pull up resistors for the I2C interface with optional solder jumpers
*Easy to integrate
*Factory calibrated in wide temperature range:-40…+125°C for sensor temperature and -70…+380°C for object temperature.
*High accuracy of 0.5°C over wide temperaturerange (0…+50°C for both Ta and To) High (medical) accuracy calibration
*Measurement resolution of 0.02°C
*Single and dual zone versions
*SMBus compatible digital interface
*Customizable PWM output for continuousreading
*Simple adaptation for 8-16V applications
*Sleep mode for reduced power consumption
*Different package options for applications andmeasurements versatility
== Application Ideas  ==

*High precision non-contact temperature measurements
*Thermal Comfort sensor for Mobile AirConditioning control system
*Temperature sensing element for residential,commercial and industrial building airconditioning
*Windshield defogging
*Automotive blind angle detection
*Industrial temperature control of moving parts
*Temperature control in printers and copiers
*Home appliances with temperature control
*Healthcare
*Livestock monitoring
*Movement detection
*Multiple zone temperature control – up to 127sensors can be read via common 2 wires
*Thermal relay / alert
*Body temperature measurement

== Usage  ==

1. Hardware Installation  

[[File:MLX90614 Breakout Board hardware.jpg|500px]]

2.Download the library File:[http://www.elecrow.com/wiki/index.php?title=File:MLX90614.zip MLX90614 Library]

3.Unzip it into the libraries file of Arduino IDE by the path: ..\arduino-1.0\libraries.

4.Open the code directly by the path:File -> Example ->MLS90614.

<pre>
#include <i2cmaster.h>
void setup(){
	Serial.begin(9600);
	Serial.println("Setup...");
	
	i2c_init(); //Initialise the i2c bus
	PORTC = (1 << PORTC4) | (1 << PORTC5);//enable pullups
}

void loop(){
    int dev = 0x5A<<1;
    int data_low = 0;
    int data_high = 0;
    int pec = 0;
    
    i2c_start_wait(dev+I2C_WRITE);
    i2c_write(0x07);
    
    // read
    i2c_rep_start(dev+I2C_READ);
    data_low = i2c_readAck(); //Read 1 byte and then send ack
    data_high = i2c_readAck(); //Read 1 byte and then send ack
    pec = i2c_readNak();
    i2c_stop();
    
    //This converts high and low bytes together and processes temperature, MSB is a error bit and is ignored for temps
    double tempFactor = 0.02; // 0.02 degrees per LSB (measurement resolution of the MLX90614)
    double tempData = 0x0000; // zero out the data
    int frac; // data past the decimal point
    
    // This masks off the error bit of the high byte, then moves it left 8 bits and adds the low byte.
    tempData = (double)(((data_high & 0x007F) << 8) + data_low);
    tempData = (tempData * tempFactor)-0.01;
    
    float celcius = tempData - 273.15;
    float fahrenheit = (celcius*1.8) + 32;

    Serial.print("Celcius: ");
    Serial.println(celcius);

    Serial.print("Fahrenheit: ");
    Serial.println(fahrenheit);

    delay(1000); // wait a second before printing again
}
</PRE>
5.Upload the code,then open the serial monitor to see the result.<BR>
[[File:MLX90614 Breakout Board test resullt.JPG|400px]]
<br>

== Resources  ==
*[http://www.elecrow.com/wiki/index.php?title=File:MLX90614.zip Demo code]