ESP8266 Community Forum

Hello. I have a problem with esp8266 NodeMcu v3. I connected the ds18b20 sensor with 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, after uploading the same code, connects to the router. Please help.

An ESP8266 may refuse to connect to wifi due to these reasons: https://siytek.com/esp8266-cant-connect ... -of-these/

But if another similar board is working well, maybe it's just a bad board.