arduino mini project

I am trying to find some components which will measure the tempreture and the % of the moist in the air.
A thermometer to find the tempreture and send it back to the processor and if the tempreture is above 28 degree C it will activate a fan , and if its below 22 degree C it will power up a heat source.
A hygrometer which measure the moist un the air ,and again according to a condition will activate another component.

My choice is the Si7021. The modules are cheap, small and have I2C.

Bosch BME280 - also measures air pressure

aarg:
My choice is the Si7021. The modules are cheap, small and have I2C.

i have red little bit about the module
i have never tried using a modules like this and i cannot understand the data sheets
can u sum up the basics?
also i need a Measure PH levels in ground there is anything u farmiliar with?

DHT22 is yet another option. Temp & humidity, one-wire data bus (needs dedicated IO pin on your Arduino, no I2C goodness)

evya61992:
i have red little bit about the module
i have never tried using a modules like this and i cannot understand the data sheets
can u sum up the basics?
also i need a Measure PH levels in ground there is anything u farmiliar with?

I use an existing library. I have never read the data sheet. It works like a charm.

aarg:
I use an existing library. I have never read the data sheet. It works like a charm.

can u send me the library

evya61992:
can u send me the library

Ever heard of Google? " Arduino library" usually does the trick.

Hi,
Welcome to the forum.

Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html

Can you tell us your electronics, programming, Arduino, hardware experience?

Thanks.. Tom... :slight_smile:

i have used aruino to make a project to my finales diploma (electronics)