Actualizado:
Y aqui el código .ino para el arduino
#include <Wire.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 }
Os dejo los enlaces para descargar el archivo fritzing y el código fuente.