Showing DS18B20 temperature sensor data in Nextion screen

[groundFungus]

@pupuko

" expected primary expression before ')' token" isnt this my main problem how can I solve this

See post # 10.
Look at the examples that come with the library.

Do you actually read my posts, or am I wasting my time?

[gfvalvo]

@pupuko

Hi me from another account

I'm pretty sure the forum administrators aren't going to like that. There's a chance one or both of you will be banned for a while.

[pupuko]

#include <DS18B20.h>

DS18B20 ds(2);

float temperature = 0.0f;

ds  heat(DS18B20PIN);

void setup() {
  Serial.begin(9600);
  DS18B20.begin();
}

void loop() {
  readSensor();
  sendTemperatureToNextion();
  delay(2000);
}

void readSensor()
{
  temperature = ds.readTemperature();
}

void sendTemperatureToNextion()
{
  String command = "temperature.txt=\"" + String(temperature, 1) + "\"";
  Serial.print(command);
  endNextionCommand();
}

void endNextionCommand()
{
  Serial.write(0xff);
  Serial.write(0xff);
  Serial.write(0xff);
}

I ve done something like that but know it gives me error of ds does not name a type

[groundFungus]

Please include the entire error message. It is easy to do. There is a button (lower right of the IDE window) called "copy error message". Copy the error and paste into a post in code tags. Paraphrasing the error message leaves out important information.

[pupuko]

Arduino:1.8.19 (Windows 10), Kart:"Arduino Mega or Mega 2560, ATmega2560 (Mega 2560)"

sketch_jun16a:7:2: error: 'ds' does not name a type

ds heat(DS18B20PIN);

^~

C:\Users\ahmet\OneDrive\Belgeler\Arduino\sketch_jun16a\sketch_jun16a.ino: In function 'void setup()':

sketch_jun16a:11:10: error: expected unqualified-id before '.' token

DS18B20.begin();

      ^

C:\Users\ahmet\OneDrive\Belgeler\Arduino\sketch_jun16a\sketch_jun16a.ino: In function 'void readSensor()':

sketch_jun16a:22:20: error: 'class DS18B20' has no member named 'readTemperature'

temperature = ds.readTemperature();

                ^~~~~~~~~~~~~~~

exit status 1

'ds' does not name a type

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

[groundFungus]

The library has no begin() function. Look at the examples.

The library has no readTemperature() function. The Documentation shows a getTempC() function.

[StefanL38]

why did you not use a working example-code for DS18B20??

https://www.google.de/search?as_q=arduino+DS18B20+democode

Assuming that all sensors work the same way is a very wrong assumption.

With a democode for DS18B20 non of your errors would occur!

For asking how to solve compiler-error-messages

If you get a compiler-error provide all details for analysing the error

Hi newcomer, the Arduino-Forum community can be of great help. If the community is able to support you in a way that helps solving your problems depends on detailed information that you should provide. trying to be quick by posting a too short posting is just slowing down finding the solution. Because all that happends is that you are asked for the detailed information and have to provide it anyway. Only difference the answer and the solution comes later The most important thing is to pos…

For posting multiple postings in a short time, the new member has to get to Discourse trust level one on the forum, which is a pretty trivial matter:

Get to trust level 1 by…

• reading at least 5 topics
• Reading at least 30 posts
• Spend a total of 10 minutes reading posts

best regards Stefan

[PerryBebbington]

@pupuko I have suspended your account.
@dorogon Do not create multiple accounts, any more and you risk a permanent suspension. Thank you.