Hello,
I have connected the DHT22 sensor to the nodemcu according to the tutorial from the website: https://lastminuteengineers.com/esp8266-dht11-dht22-web-server-tutorial/
.
If I run the bare nodmcu -connects to wifi and gets the address. The wifi network is configured correctly, the web server responds. If at this point I plug the DHT22 sensor pin into the data port everything works beautifully:
.
.
On the other hand, if I plug the DHT22 into the unplugged nodemcu board and only then apply power, there is no wifi connection. Not even messages come out on the serial that I am initiating a wifi connection. I only get the strobes which are always there during startup and that's the end of it.
.
But that's not the point, after all, to wait until the controller plugs into the wifi and manually plug in the sensors?
I have checked the power supply variants of the DHT22:
- as above - i.e. power supply from the 3.3v pin from the nodemcu board
- external 3.3v power supply
- external 5v power supply
Situation the same every time. Is this a known problem? I have not come across similar cases anywhere.
I have connected the DHT22 sensor to the nodemcu according to the tutorial from the website: https://lastminuteengineers.com/esp8266-dht11-dht22-web-server-tutorial/

If I run the bare nodmcu -connects to wifi and gets the address. The wifi network is configured correctly, the web server responds. If at this point I plug the DHT22 sensor pin into the data port everything works beautifully:


On the other hand, if I plug the DHT22 into the unplugged nodemcu board and only then apply power, there is no wifi connection. Not even messages come out on the serial that I am initiating a wifi connection. I only get the strobes which are always there during startup and that's the end of it.

But that's not the point, after all, to wait until the controller plugs into the wifi and manually plug in the sensors?
I have checked the power supply variants of the DHT22:
- as above - i.e. power supply from the 3.3v pin from the nodemcu board
- external 3.3v power supply
- external 5v power supply
Situation the same every time. Is this a known problem? I have not come across similar cases anywhere.