DHT22 problem

[gauka12345]

OK i have reinstalled everything please see pictures with the steps still no luck the sensor wont read…

my wiring :

code :

[barnosch]

hmm. looks not so bad.
It can take some time to read the sensor (~3-5 sec). But i guess you waited longer after the command?

My DHT22 looks slightly different, an i had to solder a resistor between two pins.
Maybe yours is ready made.

Are you sure that 3.3V are enough? You could try to put your + line to pin 2 or 4 (right next to the ground)
Should look like this;)

[gauka12345]

Barnosh thanks for coming back!!.. i have run this sensor from 3v and 5 v with no changes, yes i been waiting round 3min or even longer, managed to brew capa and sensor was still reading when i get back. It does work on Python code , the sensor is soldered to pcb and it has got 2k7 resistor across and CAP, i will take it to work tomorrow and i will solder resistor and see whats this change anything … i will let you know, so far i have bougth this to play with

https://uk.gearbest.com/living-appliances/pp_344665.html

Regards
Lukas

[barnosch]

hah, that would have been my next suggestion… take the xiaomi stuff.
You can jsut throw it everywhere in your house, and you don’t need a wired connection.

Here in the bottom.
As you can see the humidity from the sensor is not showing correctly. Need to buy another one or … even better take another Xiaomi sensor ;)

Don’t forget, that you need the Xiaomi Gateway in order to get the stuff to work

[gauka12345]

hey barnosch !!! too late i got the sensors with out getaway , LOL typical me…

anyway… i have soldered 10k resistor across 1st and second leg of the sensor … still do not working , so surly it has to be faulty sensor … i really do not know , i have spent too much time on this anyway… thank you for your support, you are star!! mate ,i will let you know how the xiaomi goes once i got the gateway lol ;-)

Regards
LuK

[barnosch]

you’re welcome.
This is the next topic for you …
https://forum.magicmirror.builders/topic/5084/mmm-xiaomi-temperature-and-humidity-from-your-smarthome
;)