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Author Topic: Whole House LED control / home automation  (Read 1455 times)
snyggapa
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« on: August 09, 2011, 11:38:14 PM »

feel free to bang on about it, there are lots of clever folk here (& thicko's ..."me" ) ask away I do, it's what makes this  such an interesting place to be

Well, this might look like a cross-post from the greenbuilding forum, but that was a few weeks ago:

We're in the process of rebuilding an old cottage , in effect a new build as everything is coming down and going back up again, and we need a lighting solution for all of it. We would likely want a range of spots, downlighters, wall lights and striplights - with dimmers in most if not every room. We're drawn towards LED lights as a technology because of it's energy efficiency, although appreciate that some LEDs are more efficient than others.
Bearing this in mind, that we're looking for the most energy efficient/long term cost effective lighting, so need a solution or technologies for us to look at.

Most of the lighting would want to be warm white, with a possible exception for strips under the kitchen worktops which could be a "whiter" white.

My personal preference would be to use low a number of drivers/transformers somewhere centrally in the house and then run everything (controls and lights) from that on the low voltage side, rather than wire the house for a normal 240v lighting and use 240v dimmers and bulbs with individual 240v drivers built into them - however I am not sure if the technology or choice or price/performance is ready for this type of system yet.

We are not really interested in crazy colour changing gadgets to choose one of 65,000 colours, and would ideally used mostly wired connections rather than battery operated/wireless ones from an energy efficiency point of view, but not adverse to an occasional remote control Smiley

If it came with some control system that I could hook a PC up to somehow then that's an added bonus - and even more if the wiring used could be used for other things (so cat5 or similar floodwire the place for example and send audio, cctv, lighting control, whatever over the wiring if required)


To give you an idea of scale, the place is pretty small. 2m ceiling heights and downstairs rooms are:

Kitchen (3.5m x 3m) opening to diner (3.5m x 2.5m)
Lounge (3.5m x 3.5m)
Utility/Hallway (2.5m x 3.5m)
shower/WC (1m x 2.5m)

upstairs:

landing/office (2.5m x 3.5m)
bathroom (2.0m x 3.5m)
bed 1 (3.5m x 3.5m)
bed 2 (3.5m x 3.5m)

Any advice on systems, gadgets, technologies or "things to avoid" would be much appreciated
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guydewdney
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« Reply #1 on: August 10, 2011, 09:30:13 PM »

I like the lutron grafik eye system. infinately expandable, computer controllable, 'scene' changes according to day / time / button presses (eg change lights when you turn on telly)
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wookey
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« Reply #2 on: August 29, 2011, 07:38:24 PM »

I bet it's horribly expensive though?

I've noticed that remote control drivers and reasonably efficient supplies are now starting to appear that aren't expensive. A bit of net searching should find you the bits to do what you want (and I think it's a sensible design).
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snyggapa
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« Reply #3 on: September 01, 2011, 11:48:17 PM »

It's still horribly expensive Smiley

I've taken a punt on a DIY system - a DMX lighting controller, some LED units still to be determined, and got hold of an "arduino" programmable logic board thingy and am attempting to make this my controller to talk DMX to the lighting unit.

If I can get the arduino bit to work I should have something flexible and controllable. If not I have to resort to candles Sad
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Wyleu
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« Reply #4 on: September 02, 2011, 11:24:21 AM »

It's the reliability that's the real problem.
 If you thing an automated house is a pain when a light wont come on try the reaction when you have a light that wont go off.


....and don't even mention intermittent.
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snyggapa
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« Reply #5 on: September 04, 2011, 10:11:37 AM »

turning things off I'm sure I will have no problem with , but you are right - it's the intermittent faults that will kill me !
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Wyleu
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« Reply #6 on: September 04, 2011, 10:56:05 AM »

turning things off I'm sure I will have no problem with

Oh contraire ! If your doing home automation you have to hand control over to the system and if you do have a manual override somewhere it shouldn't be in the operational area otherwise you've got no way of operating the device if someone has used the good old fashioned switch. If the control mechanism fails then you are left nothing short of pulling out fuses or similar to turn a light off if it's locked on ( and triacs at all can and do fail on ) leaving you with a trip to the fuse box to turn off the bedroom light. You might detect the slightest whif of the voice of experience here... Roll Eyes
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snyggapa
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« Reply #7 on: September 04, 2011, 11:33:56 AM »

> leaving you with a trip to the fuse box to turn off the bedroom light.

this was my definition of "I will have no problem" - I would have no problem. whether the other half has a problem is yet to be determined...

on the bright side, my first experiment with my home-brew DMX controller has managed to speak to my DMX LED driver and ramp channels up and down. Not that I have any lamps connected to it yet Smiley
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