Reading the SHT11 Humidity sensor
http://www.mcselec.com/an_116.htm

 

Well....guys I have finally designed a circuit using the reference diagram from the Humrel data sheet.

I am uploading the circuit image so you guys can tell me some changes and the mistakes I have made.

See you soon.

::Pranav::

Attached Thumbnails

 

 

Well....guys I have finally designed a circuit using the reference diagram from the Humrel data sheet.

I am uploading the circuit image so you guys can tell me some changes and the mistakes I have made.

See you soon.

::Pranav::

Attached Thumbnails

 

 

Sorry.I uploaded the file twice by mistake.


::Pranav::

 

Hi guys.My professor has approved the circuit.The only problem I am now facing is regarding the sensor.The local stockist whom I asked if the sensor is available,now says that he wont order only one sensor for me.

So I would like to know some other sensors,that work on the capacitance principle as the Humirel one that I have used.It should approximately same specifications as the Humirel HS 1100/HS 1101 humidity sensor.I have already found 2 sensors from Gefran,on www.gefran.com and other
from Sensirion,at www.sensirion.com


Waiting for some positive repsonses.

Regards,


::Pranav::

 

Well.....the sensor from Sensirion is not a capacitive sensor.If I use it I will have to change the whole circuit.


::Pranav::

 

http://www.digikey.com is a great source for components, they carry the Humeriel sensors. It sounds like you're outside the US, I think they ship internationally.

 

Thanks Oznog.I will check the site out rightaway.


::Pranav::

 

Hey pranav81 are you from India Are you a hindu or sikh?

 

Yes.I am from India.

I am a Brahmin,Hindu.

What about you?Where r u from?


::Pranav::

 

This guy sells humidity sensors on Ebay:

http://cgi.ebay.com/Sensirion-SHT75-...QQcmdZViewItem

Mike

 

Hiya Pranav,
A few months ago I got some samples from dallas, the (ds1923 I'button) to be precise. Along with a pic I've set the I'button to take temp & humidty readings for 6 months then when I've made up a simple VB program to read it I'll read it and chuck it outside again. Those I'button's are the go mate try and get some.

Cheers Bryan

__________________
" The only way to avoid human error is to avoid the use of humans"

 

I'm a Jut dude 100% punjabi

 

What is it, Resurrect A Dead Thread Day? Is that some kind of internationally recognized holiday?

__________________
I thought what I'd do was I'd pretend I was one of those deaf-mutes.

 

No,I dont think so.

BTW,guys I am now building a microcontroller based LPG steam bath controller.I will upload the crude circuit diagram of the same once I design it.

Take care dudes,

::Pranav::