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.
 
 
 
 
