temperature Archives

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. Figure 1 in the full data sheet shows a block diagram of the DS1624.

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

Module	Microbit
VDD	3v3
Gnd	Gnd
SDA	P20
SCL	P19

Code

I downloaded and imported the following library – https://github.com/bluemurder/DS1624 . I saw errors and had to update the library

The error seen is error: call of overloaded ‘write(int)’ is ambiguous. So it appears that in the library – Wire.write(0xAC); has to be changed to Wire.write((float)0xAC);

DS1624-2.0.0

This is the example so some of the hard graft has already been done for you

[codesyntax lang=”cpp”]

#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);
}

[/codesyntax]

Testing

Open the serial monitor and you should see the following

21.62
21.62
21.69
21.69
21.75
21.94
22.62
23.75
24.19

Link

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

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

Code

You will need the Adafruit BMP085 library for this example, you can either download it or use the library manager in newer Arduino IDEs.

In this example I am only looking at the temperature and pressure but there are other functions in the library

[codesyntax lang=”cpp”]

#include <Wire.h> #include <Adafruit_BMP085.h> Adafruit_BMP085 bmp; void setup() { Serial.begin(9600); if (!bmp.begin()) { Serial.println("Could not find BMP180 or BMP085 sensor at 0x77"); while (1) {} } } void loop() { Serial.print("Temperature = "); Serial.print(bmp.readTemperature()); Serial.println(" Celsius"); Serial.print("Pressure = "); Serial.print(bmp.readPressure()); Serial.println(" Pascal"); Serial.println(); delay(5000); }

[/codesyntax]

temperature

micro:bit and DS1624 temperature sensor example

Connection

Code

Testing

Link

micro:bit and bmp180 sensor example

Specification

Wiring and layout

Code

Output

Links