[OpenTRV-dev] OpenTRV at local ham club

[Bo Herrmannsen]

it was more that if there are a RFM module on the pi why not talk direct to
the valves? i would not need the opentrv in that case


2014-07-29 12:00 GMT+02:00 Kevin Wood <EMAIL ADDRESS HIDDEN>:

> Hi Bo,
>
> > about working with OpenTRV.... if i run some strings with one wires
> > sensors
> > why not in this case talk to the valves direct ?
>
> I just mentioned that as it's what I plan to do. For the essentials of
> protecting the place from frost, and because it's 100 miles away, I'm
> loathed to rely on an RF link for all temperature inputs. Of course, an
> OpenTRV in the room would provide you with a temperature input in this
> case, and it's probably all you need.
>
> > oil level.... it can be done by attaching a lenght of tube to the bottom
> > of
> > the tank and route it up tot the top and mount an air pressure sensor on
> > it, any valves etc there allready?
>
> I want to avoid fitting obviously "home-made" items to the oil tank in
> case this raises concern with the oil supplier. It already has a device
> fitted which "pings" the level of the tank ultrasonically and transmits it
> at 433 MHz to a display inside the house. I'm hoping to reverse engineer
> the protocol this device uses.
>
> Should that fail, I also have another tack for estimating oil consumption.
> I'm building in a current transformer into the supply to the boiler so I
> can count the hours during which the burner is fired. The burner is not
> modulated, so hours of burner time should map directly to litres of oil
> used.
>
> Node red looks interesting. I will give that some serious consideration
> for what I need, since web development is not exactly my forte.
>
> Kevin
>
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|  Bo Herrmannsen                     |
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