Interfacing a DS1624 temperature sensor to an Arduino Uno

In this example we will connect a Ds1624 temperature sensor to an Arduino Uno, lets dive in and look at some information about this sensor

The DS1624 consists of two separate functional units: a 256-byte nonvolatile E2 memory and a direct-to-digital temperature sensor.

The nonvolatile memory is made up of 256 bytes of E2 memory. This memory can be used to store any type of information the user wishes. These memory locations are accessed through the 2-wire serial bus.

The direct-to-digital temperature sensor allows the DS1624 to measure the ambient temperature and report the temperature in a 12-bit word with 0.0625°C resolution. The temperature sensor and its related registers are accessed through the 2-wire serial interface.

DS1624: Block Diagram

Features

  • Reduces Component Count with Integrated Temperature Sensor and Nonvolatile E2 Memory
    • Measures Temperatures from -55°C to +125°C in 0.0625°C Increments
    • ±0.5°C Accuracy from 0°C to 70°C
    • 256 Bytes of E2 Memory for Storing Information Such as Frequency Compensation Coefficients
    • No External Components
  • Easy-to-Use 2-Wire Serial Interface
    • Temperature is Read as a 12-Bit Value (2-Byte Transfer)
  • Available in 8-Pin SO and DIP Packages

 

Connection

This is an I2C device – it is safe to be powered from a 5v source

Module Arduino Uno Pins
VDD 5v
Gnd Gnd
SDA SDA – A4
SCL SCL – A5

Code

I downloaded and imported the following library – https://github.com/bluemurder/DS1624

The code below is the default example which works perfectly

 

#include <DS1624.h>
 
// Sensor presents all address pins connected to ground
DS1624 ds1624(0x00);
 
void setup()
{ 
// Begin serial connection at 9600 baud
Serial.begin(9600);
}
 
void loop()
{
float temperature;
bool valid;
 
// Get current temperature
ds1624.GetTemperature(temperature, valid);
 
// Print it
Serial.println(temperature);
 
// Wait a while
delay(1000);
}

 

Testing

Open the serial monitor and you should see the following type of readings – which of course will vary depending on your environment

24.31
24.31
24.87
25.94
26.44
27.06
27.37
27.81

Link

https://datasheets.maximintegrated.com/en/ds/DS1624.pdf

CJMCU-1624 DS1624 temperature sensor, high precision digital thermometer with memory function

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