Arduino Nano - TMP112 Temperature Sensor Tutorial

TMP112 High-Accuracy, Low-Power, Digital Temperature Sensor I2C MINI module. The TMP112 is ideal for extended temperature measurement. This device offers an accuracy of ±0.5°C without requiring calibration or external component signal conditioning. Here is the demonstration with Arduino Nano.

1. Arduino Nano

2. TMP112

3. I²C Cable

4. I²C Shield for Arduino Nano

Take an I2C shield for Arduino Nano and gently push it over the pins of Nano.

Then connect the one end of I2C cable TMP112 sensor and the other end to the I2C shield.

Connections are shown in the picture above.

The Arduino code for TMP112 can be downloaded from our Github repository- DCUBE Store

Here is the link for the same :

https://github.com/DcubeTechVentures/TMP112/blob/master/Arduino/TMP112.ino

We include library Wire.h to facilitate the I2c communication of the sensor with the Arduino board.

You can also copy the code from here, it is given as follows:

// Distributed with a free-will license.

// Use it any way you want, profit or free, provided it fits in the licenses of its associated works.

// TMP112

// This code is designed to work with the TMP112_I2CS I2C Mini Module

#include

// TMP112 I2C address is 0x48(72)

#define Addr 0x48

void setup()

{

// Initialise I2C communication as MASTER

Wire.begin();

// Initialise serial communication, set baud rate = 9600

Serial.begin(9600);

// Start I2C Transmission

Wire.beginTransmission(Addr);

// Select configuration register

Wire.write(0x01);

// Continuous conversion, comparator mode, 12-bit resolution

Wire.write(0x60);

Wire.write(0xA0);

// Stop I2C Transmission

Wire.endTransmission();

delay(300);

}

void loop()

{

unsigned data[2];

// Start I2C Transmission

Wire.beginTransmission(Addr);

// Select data register

Wire.write(0x00);

// Stop I2C Transmission

Wire.endTransmission();

delay(300);

// Request 2 bytes of data

Wire.requestFrom(Addr, 2);

// Read 2 bytes of data

// temp msb, temp lsb

if(Wire.available() == 2)

{

data[0] = Wire.read();

data[1] = Wire.read();

}

// Convert the data to 12-bits

int temp = ((data[0] * 256) + data[1]) / 16;

if(temp > 2048)

{

temp -= 4096;

}

float cTemp = temp * 0.0625;

float fTemp = cTemp * 1.8 + 32;

// Output data to serial monitor

Serial.print("Temperature in Celsius: ");

Serial.print(cTemp);

Serial.println(" C");

Serial.print("Temperature in Farhenheit: ");

Serial.print(fTemp);

Serial.println(" F");

delay(500);

}

Various applications incorporating TMP112 low power, high accuracy digital temperature sensor include Power-Supply Temperature Monitoring, Computer Peripheral Thermal Protection, Battery Management as well as office machines.