Re: Humidity problem

[Ake Hedman <akhe@xxxxxxxxxxxxx>]

egelbeertje wrote:

> Hi,
>
> Our bathroom is located at the innermost part of the house - so no
> windows - which created the need of forced ventilation.
> Currently this is done by walking into the bathroom - knowing that
> you are going to take a shower or bath - and swith on the 20 minute
> timer that drives a fan sucking the air out through a vent hole and
> pipe it through the loft to the outside.
> The timer (a din-module in the loft) is controlled by a pulse switch -
> push it once and you get 20 minutes, push again it switches of. I
> could change the setting so that every push extends the timer by an
> additional x minutes but then I have to wait until it reaches the end
> of the timer cycle.
>
> So I want to automate this one and link it to humidity detection but
> haven't been able to come up with an easy solution - preferrably
> hardwired - something like "hey it's x% humidity - I will click
my
> relay and give a pulse to the timer so it can work for 20 minutes -
> then I will measure again and repeat this cycle" without going
into
> pulling wires back and forth to a home control device since I don't
> have one (yet).
>
> Anybody out there with some bright idea would be welcome to comment.
> Also some guidance on where to find humidity detectors would be a
> good start.
>
> rgds Rob
>

<talking_about_my_own_stuff>

You can have a look at the Keliv SHT at http://www.vscp.org.  Your type
of application is the intended use for it (possibly together with a
relay module).

The bad thing is that you have to build it yourself. I will have a new
batch of PCB's next month and hopefully be able to sell premade modules
as well as bare PCB's.

</talking_about_my_own_stuff>


Best Regards
/Ake

--
---
Ake Hedman (YAP - Yet Another Programmer)
eurosource, Brattbergavägen 17, 820 50 LOS, Sweden
Phone: (46) 657 413430 Cellular: (46) 73 84 84 102
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