[OpenTRV-dev] Temperature reading too high?

Jeremy Poulter jeremy at bigjungle.net
Thu Mar 3 21:59:22 GMT 2016


Yes the receiver is always on as I am also receiving the data from the Rev
11 boards so maybe that is it?

I think the airflow should be ok nothing around it (other than the case).


On 3 March 2016 at 21:26, Damon Hart-Davis <dhd at exnet.com> wrote:

> > On 3 Mar 2016, at 21:20, Jeremy Poulter <jeremy at bigjungle.net> wrote:
> >
> > Hi,
> >
> > After the OpenTRV/OEM hackathon I updated the firmware on my Rev 2
> board. After that it looks to be reading ~2C higher than the emonTH I have
> in a similar location where as before the update the temps where approx the
> same.
> >
> > Have a look at
> https://emoncms.org/vis/multigraph?mid=9900&embed=1&apikey=1a6f5473614b408690f6397fb1fdc001
> .
> >
> > I updated the firmware to the latest Git on the 24th Feb, if you check
> the temps befpre that you will see that 'Office Temperature' (the emonTH)
> and 'Office Temperature OpenTRV' are more or less the same (ignore Soil
> Temperature this is a temp sensor in a pot plant and expected to be a few
> degrees lower). After the 24th, Office Temperature OpenTRV is consistently
> a few degrees higher than the emonTH. To the best of my knowledge nothing
> has changed other than the firmware.
> >
> > Let me know your thoughts.
> Is this a unit with the receiver always on (ie a hub with ‘C’ > 0), and
> does it have good air-flow?  I have stopped trying to turn the receiver on
> to reduce self-heating, at least for the moment.
> Rgds
> Damon
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