[Swansea Hackspace] LEDs strip lighting

Fri Oct 10 12:12:57 BST 2014

Hi Richard,

- The strip you linked to claims 7.2W/m. It’s not clear whether that is the consumption at full (white) brightness.
- The white LED strip Ceri linked to claims 0.35W/LED (at full brightness) x 36 LEDs/0.5m x 2  = 25.2W/m
- The 60 RGB LEDs/m strip I linked to claims 18W/m (at full brightness)

This is still lower than incandescent (60W) and halogen (43W) bulbs. However, I’m thinking you won’t be content with just a 1m strip ;)

Cheers,
Gerrit

PS - Ceri brings up an interesting point regarding colour temperature (listed in Kelvin, not to be confused with the actual temperature of the LED): Some LEDs produce a cooler, more “energising” white, while other produce a warmer, “cosier” light 

On 10 Oct 2014, at 11:44, Richard Morgan <richard.morgan at avocation.co.uk> wrote:

> Thanks Gerit,
> Talking of the power needs then....I was thinking LEDs would be more cost effective than halogen lighting. And given we're going into the 'darker' months, these will be on for probably 5-6hrs a night every day...
> 
> Does the fact that I'm looking at going for so many LEDs on strip lighting negate that argument?
> 
> The 'low profile' of these in that they can just be attached to the existing beams with minimal screwing/drilling, and the lighting coverage and colours/dimming will likely still win the day though.
>  
> 
> 
> On 10 October 2014 10:10, Gerrit Niezen <gerrit.niezen at gmail.com> wrote:
> The RGB LED light strip that I demoed at the first technical meeting back in April 2013 (http://swansea.hackspace.org.uk/Meetings/20130422) had 60 LEDs/metre (the slides at that link has all the details).
> 
> I bought them from Adafruit (http://www.adafruit.com/products/1138) and just noticed you can now buy a mind-boggling 144 LEDs/metre strip (http://www.adafruit.com/products/1507). It does pull 7A at 5V though.
> 
> Richard, the design of that remote control you linked to looks like a bit of a rip-off of the Philips LivingColors remote control from 2010:
> http://www.core77.com/blog/featured_items/neocon_2010_video_control_the_color_of_your_room_by_remote__16745.asp 
> Philips has been improving on that design in the past 4 years: http://www.philips.co.uk/c-p/6916431PH/livingcolors
> 
> Keep in mind that when using RGB LED light strips, the three LEDs are turned up to full brightness to give you a white colour, which consumes the most power.
> 
> Cheers,
> Gerrit
> 
> 
> On 10 Oct 2014, at 09:43, Ceri Clatworthy <ceri.clatworthy at gmail.com> wrote:
> 
>> I got this:
>> http://www.banggood.com/LED-Rigid-Strip-Light-50cm-12V-36-SMD-7020-U-Shape-White-p-909736.html
>> 
>> from china.
>> 
>> 
>> Beautiful clean white (not warm white)
>> 
>> very bright, but they do run warm, but not hot.
>> 
>> If i remember will bring one tomorrow !!!
>> 
>> Ceri
>> 
>> On Fri, Oct 10, 2014 at 9:26 AM, Graham Owens <grahamowensuk at googlemail.com> wrote:
>> My father in law has done exactly this, but i am unable to confirm what brand he used etc at the moment?  but he regularly tells my wife how bright it is (apparently green is much brighter than the others, i spend my time making postulations that it is an illusion and their eyes are just more sensitive to green light <338.gif>)
>> 
>> Graham
>> 
>> On 10 October 2014 09:18, Richard Morgan <richard.morgan at avocation.co.uk> wrote:
>> I have a conservatory that requires lighting - it's a bit dark in these Winter months.
>> 
>> I'm looking to put LED strips across the roof beams and was wondering about using LED strips but not sure how much light they would give off at a distance though. I also like the RF controller idea for running them and changing brightness / colours...
>> 
>> It's about 8.5ft high at the mid-point and I would likely run these up the diagonal beams - about 11ft in length.
>> 
>> http://www.simplelighting.co.uk/products/2M,-Colour-Changing-RGB-30-LED-Tape-kit.html?gclid=Cj0KEQjwh96hBRCnsefbvZrKrpcBEiQAF7oMdOySrl94A5MYfcfSsRcnOaTB2iNcbVePy3vAJYcR1FMaAqHp8P8HAQ
>> 
>> We would mostly be using the white colour but the option to change it for kids parties etc would be cool.
>> 
>> Is this a dumb idea? Would they give off enough light at that distance?
>> 
>> All suggestions very gratefully received....
>> 
>> 
>> -- 
>> Kind regards,
>> 
>> Richard
>> 
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> 
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> 
> 
> 
> -- 
> Kind regards,
> 
> Richard
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