Particle Photon - AD7416ARZ 10-Bit Temperature Sensor Tutorial

AD7416ARZ is 10-Bit temperature sensor with four single channel analog to digital convertors and an on board temperature sensor incorporated in it. The temperature sensor on the parts can be accessed via multiplexer channels. This high-accuracy temperature sensor has become an industry standard in terms of form, factor and intelligence, providing calibrated, linearized sensor signals in digital, I2C format. Here is the demonstration with particle photon.

1. Particle Photon

2. AD7416ARZ

3. I²C Cable

4. I²C Shield for Particle Photon

Take a I2C shield for particle photon and gently push it over the pins of particle photon.

Then connect the one end of I2C cable to AD7416ARZ sensor and the other end to the I2C shield.

Connections are shown in the picture above.

The particle code for AD7416ARZ can be downloaded from our GitHub repository- Dcube Store.

Here is the link for the same :

https://github.com/DcubeTechVentures/AD7416ARZ/blob/master/Particle/AD7416ARZ.ino

We have used two libraries for particle code, which are application.h and spark_wiring_i2c.h. Spark_wiring_i2c library is required to facilitate the I2C communication with the sensor.

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.

// AD7416ARZ

// This code is designed to work with the AD7416ARZ_I2CS I2C Mini Module available in Dcube Store.

#include

#include

// AD7416ARZ I2C address is 0x48(72)

#define Addr 0x48

float cTemp = 0.0, fTemp = 0.0;

int temp = 0;

void setup()

{

// Set variable

Particle.variable("i2cdevice", "AD7416ARZ");

Particle.variable("cTemp", cTemp);

// Initialise I2C communication as Master

Wire.begin();

// Initialise serial communication, set baud rate = 9600

Serial.begin(9600);

delay(300);

}

void loop()

{

unsigned int data[2];

// Start I2C transmission

Wire.beginTransmission(Addr);

// Select data register

Wire.write(0x00);

// Stop I2C transmission

Wire.endTransmission();

// Request 2 byte 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

// Convert the data to 10 bits

temp = ((data[0] * 256) + (data[1] & 0xC0)) / 64;

if (temp > 511)

{

temp -= 1024;

}

cTemp = temp * 0.25;

fTemp = (cTemp * 1.8) + 32;

// Output data to dashboard

Particle.publish("Temperature in Celsius : ", String(cTemp));

Particle.publish("Temperature in Fahrenheit : ", String(fTemp));

delay(1000);

}

AD7416ARZ is a 10-Bit Temperature sensor with four single channel analog to digital converter can perform the operation of Data acquisition with ambient temperature monitoring. It can also be employed in Industrial process control systems, Automotive Battery-charging applications and Personal computers.