ESP8266 Community Forum

- Thu Sep 22, 2016 12:05 pm #55524 Have you tried the alternate lib that Adafruit linked?
https://forums.adafruit.com/viewtopic.php?f=24&t=86054#p437591
???

Ray

- Thu Sep 22, 2016 11:27 pm #55553 Connect pin 1 (on the left) of the sensor to +5V
// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
// to 3.3V instead of 5V!
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

Do you have the 10k pullup resistor between pin 1 & 2 of the DHT22 ???

1- 3 volts
2 -data output
3 -NC
4 -gnd


hope this helps

- Sat Sep 24, 2016 6:49 am #55609 i already used the adafruit lib from this link and also a 10k resistor between VCC and Data(DHT22).

i deleted the adafruit lib in the libraries folder, downloaded the lib again and unzipped it in the libraries folder.

then flashed the test sketch with baudrate 9600 and it worked. reflashed it with 115200 baudrate and worked too.

previously i tried only 115200 baudrate and it failed. there is no hardware modification since i started the post...so the only fault i can imagine was an copy fault with the library.

thank you very much for your support