HS1101 Humidity sensor interfacing question.

[dariush_abbasi]

Hi everybody.
I've made the circuit with 555 which is in the HS1101 datasheet from Humirel.
The problem is the fluctuation in Frequency which is too much.
Any suggestion or any other circuit which has frequency output?
Thanks a lot in advance.
The datasheet :
HS1101LF

 

[skogsjanne]

How about some kind of crystal oscillator?

 

[dariush_abbasi]

What do you mean by crystal oscillator?
would you please explain more or any circuit schematic available?

 

[skogsjanne]

Come on, try Google!

 

[dariush_abbasi]

Ok, i'll check it.Thanks.

 

[wp100]

Hi,

You might find the DHT11 / 22 an easier and cheaper option if its available in your area; its complete ready to go and does temperature as well.

If you want better accuracy then consider the SHT11, but a a price.

 

[john120]

For oscillator try 74HCT14 it gives good frequency,me I am doing the same but the problem I have I want to know how comparing resistive changes of a sensor an the frequency from an oscillator but which is input in the microcontroller on the other input ;mean while I have two differents inputs.

Thanks