On 19/12/2013 19:42, harryagain wrote:
"Phil" wrote in message ...
Hi. I am in the process of completing a home-brew central heating
controller which will be able to measure the temperature outside of the
house as well as in 3 rooms inside.

Our house faces north/south and I plan to mount the outside sensor just
under the eaves but do I mount it on the northerly side or the southerly?

Obviously, the northerly side never sees the sun but I am concerned that
the sensor may be affected by stored heat, or should that be cold so,
has anyone got any advice please?
--
You are one a hiding to nothing.
These devices have long been available and took decades to perfect, some
don't work well even now.

Since they are basically a small plastic box with a thermister inside.

So anything you make is unlikely to work well.

I have reasonable confidence that anything one makes will work equally
as well as a commercial one, and that the performance will be more than
adequate for most applications.

Go out and buy one.

yeah right

--
Cheers,

John.

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