The way to measure the temperature by arduino uno & hdc1080

Other Hardware Sensors
1

How could I measure the temperature by arduino uno, hdc1080, and breadboard? I want to know the code. I asked chatgpt that question, but I can't solve the problem. help me please!

I think I can measure the temperature, but I can't. the temperature is measured by 125 degree again & again.

#include <Wire.h>
#include "ClosedCube_HDC1080.h"

ClosedCube_HDC1080 hdc1080;

void setup()
{
Serial.begin(9600);
Serial.println("ClosedCube HDC1080 Arduino Test");

// Default settings:
// - Heater off
// - 14 bit Temperature and Humidity Measurement Resolutions
hdc1080.begin(0x40);

Serial.print("Manufacturer ID=0x");
Serial.println(hdc1080.readManufacturerId(), HEX); // 0x5449 ID of Texas Instruments
Serial.print("Device ID=0x");
Serial.println(hdc1080.readDeviceId(), HEX); // 0x1050 ID of the device

printSerialNumber();

}

void loop()
{
Serial.print("T=");
Serial.print(hdc1080.readTemperature());
Serial.print("C, RH=");
Serial.print(hdc1080.readHumidity());
Serial.println("%");
delay(3000);
}

void printSerialNumber() {
Serial.print("Device Serial Number=");
HDC1080_SerialNumber sernum = hdc1080.readSerialNumber();
char format[12];
sprintf(format, "%02X-%04X-%04X", sernum.serialFirst, sernum.serialMid, sernum.serialLast);
Serial.println(format);
}

I used this code,

IMG_2194
IMG_21943318×1866 1.33 MB

and I used this circuit.

2

Hello, you can try the code here: Arduino Uno and HDC1080 humidity and temperature sensor - Arduino Learning

3

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4

I ran that code, but got the following error.

/Users/philip1029/Desktop/arduino/hdc1080demo_1/hdc1080demo_2.ino:4:20: error: redefinition of 'ClosedCube_HDC1080 hdc1080'
ClosedCube_HDC1080 hdc1080;
^~~~~~~
/Users/philip1029/Desktop/arduino/hdc1080demo_1/hdc1080demo_1.ino:22:20: note: 'ClosedCube_HDC1080 hdc1080' previously declared here
ClosedCube_HDC1080 hdc1080;
^~~~~~~
/Users/philip1029/Desktop/arduino/hdc1080demo_1/hdc1080demo_2.ino: In function 'void setup()':
/Users/philip1029/Desktop/arduino/hdc1080demo_1/hdc1080demo_2.ino:6:6: error: redefinition of 'void setup()'
void setup()
^~~~~
/Users/philip1029/Desktop/arduino/hdc1080demo_1/hdc1080demo_1.ino:24:6: note: 'void setup()' previously defined here
void setup()
^~~~~
/Users/philip1029/Desktop/arduino/hdc1080demo_1/hdc1080demo_2.ino: In function 'void loop()':
/Users/philip1029/Desktop/arduino/hdc1080demo_1/hdc1080demo_2.ino:25:6: error: redefinition of 'void loop()'
void loop()
^~~~
/Users/philip1029/Desktop/arduino/hdc1080demo_1/hdc1080demo_1.ino:43:6: note: 'void loop()' previously defined here
void loop()
^~~~
/Users/philip1029/Desktop/arduino/hdc1080demo_1/hdc1080demo_2.ino: In function 'void printSerialNumber()':
/Users/philip1029/Desktop/arduino/hdc1080demo_1/hdc1080demo_2.ino:35:6: error: redefinition of 'void printSerialNumber()'
void printSerialNumber() {
^~~~~~~~~~~~~~~~~
/Users/philip1029/Desktop/arduino/hdc1080demo_1/hdc1080demo_1.ino:53:6: note: 'void printSerialNumber()' previously defined here
void printSerialNumber() {
^~~~~~~~~~~~~~~~~

exit status 1

Compilation error: redefinition of 'ClosedCube_HDC1080 hdc1080'

5

Okay

6

do you get anything printed out from this?

7

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