[Swansea Hackspace] LEDs strip lighting

Fri Oct 10 14:05:01 BST 2014

other consideration is the number of LEDs per meter - if you want to
consume less power then getting a strip with a lower LED count would save
power - the trade off would be less light.

Most LED bulbs will have some form of lens to direct the light to an area -
those LED strips are just that, strips of LEDs with no lens.

I feel their use is best suited to decoration - put a strip behind the
frame of a painting, above a shelf to light your trinkets below it etc
rather than lighting a room to a comfortable level of lighting (say to read
a book) - as a migraine sufferer I wouldn't enjoy sitting in your
conservatory if you had enough of those strips to light your 'room' without
any other form of lighting

On 10 October 2014 12:12, Gerrit Niezen <gerrit.niezen at gmail.com> wrote:

> 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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>>>> Hackspace at swansea.hackspace.org.uk
>>>> http://swansea.hackspace.org.uk/mailman/listinfo/hackspace
>>>>
>>>>
>>>
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>>>
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>>
>
>
> --
> Kind regards,
>
> Richard
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>
>
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