DS18B20 readings 3~4°C higher than actual :(

[nadir-dogan]

Hi junkfix...
I have both original Dallas and Chinese DS18B20s.
I used them on Leonardo and on ESP32-C6 unfortunately everytime results is 3~4 C higher than actual temperature.
I'm working on this issue about one week. Not found any solution yet.
If do you have helpful knowledge I will be more happy.
My subject is not to do any calibration. I'm looking for correct native readings.
Thanks... #DS18B20

[andrea1388]

Probably they are fake sensors.

[nadir-dogan]

I see looks like the sensors self heated inside when always power on. What do you thing @andrea1388 about this situation?

[HKPhysicist]

I see looks like the sensors self heated inside when always power on. What do you thing @andrea1388 about this situation?

Check your sensor with this library
https://github.com/koendv/CheckDS18B20/

[andrea1388]

Try to measure the current absorption and check it with the data sheet