ESP8266 Community Forum

Hello. I have a problem with esp8266 NodeMcu v3. I connected the ds18b20 sensor to the temperature preview in the Blynk application. ESP does not connect to Wi-Fi on my router. When I do hotspot from my phone everything works, there is a connection to Blynk. Another ESP, the same model, connects to the router after uploading the same code. I need it asap because i need to use my employee monitoring software for work!

DeonEva wrote:Hello. I have a problem with esp8266 NodeMcu v3. I connected the ds18b20 sensor to the temperature preview in the Blynk application. ESP does not connect to Wi-Fi on my router. When I do hotspot from my phone everything works, there is a connection to Blynk. Another ESP, the same model, connects to the router after uploading the same code. I need it asap because i need to use my employee monitoring software for work!

I think that specific sensor has a note in the data sheet about that.
Since you did not mention what sensor, that is about all we can offer.

If you want to tell us what specific sensor you are using
and what specific pins it is connected to
and and post the specific result of what happens
and post your code.

Maybe then we can be a little more specific with answers

since most of us have used multiple temperature and humidity sensors, we should be able to help you fix the problem.

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The problem is your circuit or your code or both. I hope this answer is detailed enough for you. If not, maybe read your own question again and think abut how much detail is there. Then maybe read the forum guide.