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Aye, as the investment in the database grows, day by day ...

now & then we rename already-saved databases before saving another, just in-case, because saving relatively often while building the...

Hi Paul -

we put one in every heat-transfer circuit, so one per pump - bar solar, which could get too-hot - so, one in the loop between ASHP & its thermal store (235 litres), one per UFH circuit...

interesting - thanks to the the insight gained from doing these experiments, and the subsequent feedback, little by little we're gradually building our mental picture of how it all works - 'though,...

Paul -

well done - well worth a try ...

our heat transfer circuits run for hours rather than minutes, so 10 per pulse isn't the end of the world, but it does mean we have to manually...

stopping network, dropped CPU usage to a few % ...

running it & then deleting both video windows gave around a 15% reduction ...

deleting both cameras, as well, gave a further 15% reduction...

Paul -

solar-PV - too marginal, even with FiTs, for us anyway - as an add-on (rather than being fully integrated) the cost-benefit seemed about quits if nothing went wrong ...

solar-thermal -...

many thanks - did check that, and we were already set to Version 1 & the box was already ticked ...

OTOH, our experiment with increased (default) polling intervals might suggest something's not...

Hi Paul -

OK, as promised :

A. temperature & humidity sensors ...

- generally PLHs - by windows (light-level sensor determines location), and by mirrors & elsewhere (motion sensor...

Hi Paul -

yep ... hopefully later / late today ...

Chris

OK, gave it a go - upping the (default) polling interval from 5 to 15 minutes, for 70% of active nodes (several of the rest involve pulse-counting, and 70% seemed enough to show a difference) ...
...

ah, thanks ...

so, what to try ?

given most Rooms are unoccupied at any given time, and temperatures & humidities will vary slowly, except where the Sun has fairly direct influence, then maybe...

ah, thanks ...

module polling intervals - would upping the interval a little, from the standard five minutes, have a significant effect on CPU loading ?

>separate graphics card ...

we've none such - ie: we've just the basic VIA board plus and IVC200 video capture board (hardware there, but as-yet not utilised) ...

Chris

maybe ...

trace attached ...

328

many thanks, both, for thoughts ...

just checked, and it seems ours has just 1Gb of RAM - must be enough, surely ?

HD is hardly used (290Gb free out of 300Gb), and we’ve let Windows choose...

this seems to suggest Windows 8 could be twice as fast as 'XP ...

http://news.softpedia.com/news/Windows-8-Is-Twice-as-Fast-as-Windows-XP-on-a-7-Year-Old-Laptop-Video-329809.shtml

but would...

looks like our PC is getting overloaded - but what would be better ?

it's a VIA EPIA EK 10000G with maximum RAM & runs with Windows XP Pro at around 1GHz and a CPU load of around 80% ...

would...

interesting ...

yep, 24/7 but controlled is what we meant, too, ‘though in our case the control is largely manual, at the moment, while we get a feel for things ...

new house does have high...

24/7 has been found by some to reduce heating costs - so could be interesting to hear what you find !

we've been running ours 24/7, to get the (new-build) house dried-out & stable, and the bills...

Karam -

both - breath on it (figuratively speaking) & move from one situation to the other !

NB: duct tape being used to make a small wall, rather than being applied to the sensor window in...

thanks - yep, sorry, my post wasn’t clear ...

our stairs are straight runs with lobbies / landings top & bottom, each with wall-mounted PIRs facing the stairs (PLH top, PTH bottom) ...

and...

looks like we need to install some extra sensors for the stairs ...

we have PIRs top & bottom, but the landings have people passing between rooms as well as using the stairs ...

how to...

another option - we've used these :

http://www.coastform.co.uk/Disability/disability.htm

blank faceplate version, sensitivity adjustable, connected to local digital-input via included volt-free...

excellent ... v.clear ... useful ...

OTOH, high flow rates to & from a plate heat-exchanger could disturb the stratification ...

while long coils can be v.effective with v.little disturbance, because coil flow & tank water don't mix...