WS2811 addressable LED strip

[tom k&e]

A few people talked to me as I was messing about with my current blinky toy, in the shape of 3.5 metres of LED strip, and wanted links to the code / suppliers. Here's a video of it in action from a week ago, it's got a few more modes now.

http://www.youtube.com/watch?v=oatrUnDsB2w

It was purchased from this chap for $11 / m plus $28 shipping flat. Delivery was quick, certainly worth buying straight from China IMO, since domestic sellers are charging about three times as much

http://www.aliexpress.com/item/4m-WS2811-LED-digital-strip-60leds-m-with-60pcs-WS2811-built-in-tthe-5050-smd-rgb/633124138.html

The driver is an Arduino using the fastSPI library

http://code.google.com/p/fastspi/source/browse/#svn%2Ftrunk

My code is on github. Yes it's a right mess, but it's the first C I've done this millennium. It will gradually get tidier over the next few weeks. The steparray() function at the end could probably be done a lot more cheaply with pointers

https://github.com/tomfinnie/LEDstrip

With regard to power requirements, in principle it needs 5v and 3A per meter, at full brightness, although in practice almost everything you're likely to want to do will only need about half this current; the rainbow scroll at full brightness needs about 1.5A/m. You need to reinject power for runs longer than about 2m, as the voltage drop gets problematic past there. You can get away with running it as low 3.5v, possibly worse, with some loss of brightness on the blue LEDs in particular as you go down. This does mean it ought to run straight off LiIon cells in principle.

-tom k&e

[tgreer]

I'll take 2x4m strips

[tgreer]

Just a quick bump, I'm likely ordering next week, so if anyone wants some... its' 4m strips at $45USD + split shipping, let me know ASAP.

http://www.aliexpress.com/item/4m-WS2811-LED-digital-strip-60leds-m-with-60pcs-WS2811-built-in-tthe-5050-smd-rgb/633124138.html

On Wednesday, 19 December 2012 00:48:27 UTC, tom k&e wrote:

[Elliot Duffy]

Hi,

I'll take 1x4m strip please.

Best,

Elliot

[booyaa]

can i be put down for 1 x 4m strip please

thanks

mark

[Mike Pountney]

Tom, are you up for a few of us from Brighton going in on the group buy? 

I think we've got enough of us for about 5x4m. Will double check numbers if you're ok with it.

[tgreer]

Sure. We'll need the money up front once price is confirmed, but I see no issues with it.

[asc]

I am keen to join in on this order, I would like one of the 4m strips
that has sillicon tubing as discussed on irc.

4m WS2811 LED digital strip,60leds/m with 60pcs WS2811 built-in the
5050 smd rgb led chip,waterproof in silicon tube,DC5V input
http://www.aliexpress.com/store/product/4m-WS2811-LED-digital-strip-60leds-m-with-60pcs-WS2811-built-in-the-5050-smd-rgb/701799_638374848.html

Let me know when you want payment and details and I'll get it through
to you quick, I'm cool with paying for item + proportion of shipping
up front, then sending through more cash later if customs jumps us on
the order

$48.00 for led strip + proportion of shipping + proportion of tax and
duty

-asc

On Jan 2, 10:49 pm, tgreer <ukt...@gmail.com> wrote:
> Just a quick bump, I'm likely ordering next week, so if anyone wants
> some... its' 4m strips at $45USD + split shipping, let me know ASAP.
>

> http://www.aliexpress.com/item/4m-WS2811-LED-digital-strip-60leds-m-w...
>

[tgreer]

HI Brighton guys, are you still in for this?

I'm going to contact the supplier today for a proper quote for it all

On Thursday, 3 January 2013 14:26:42 UTC, Mike Pountney wrote:

[Mike Pountney]

On 7 Jan 2013, at 12:06, tgreer <ukt...@gmail.com> wrote:

> HI Brighton guys, are you still in for this?
>
> I'm going to contact the supplier today for a proper quote for it all

Yup, definitely.

Non-waterproof: 2x 4m
Waterproof: 5x 4m

[Stephen Blomley]

If it's not too late, could I please add a request for:

3x4m waterproof & 2 x4m non-waterproof.
 
Thank-you,

Stephen

--
 
 

[tgreer]

Hi all

Can you check the list below and confirm the amounts are correct.

Non waterproof:

Thomas Greer - 2x 4m

Chaka September - 2x 4m

Paul Lettington - 1x 4m

Elliott Duffy - 1x 4m

Chris Foote - 1x 4m

Booya - 1x 4m

Brighton Hackspace - 2x 4m

Stephen Blomley 2x 4m

Waterproof:

Garth Bushell - 1x 4m 

Brighton Hackspace - 10x 4m

asc - 1x 4m

Stephen Blomley - 3x 4m

[tgreer]

Quote received for it all and shipping.

Pricing is as follows (in accordance with Paypal conversion rates)

Non waterproof - £29/roll

Waterproof - £31/roll

Shipping is £2/roll. THIS DOES NOT INCLUDE DUTY/VAT (which will be calculated when it hits the UK).

If you can all email me to confirm you've seen this and how much you need to send to me, I'll respond with my bank details

[Spike]

Did this bulk order ever happen please?

I know I paid some money back in January and everything seems to have gone a bit silent.

Thanks!
Spike

[Paddy Duncan]

Hi Spike,

If you are Stephan B, there are 5 rolls with your name on in the (proposed) quiet room at the new space.

Paddy

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[tgreer]

Hi Spike

I didn't ever receive payment from you, and I never got any replies to my emails, so your order never went in.

If you think you did pay me then please let me know.

Thomas

[Spike (Chris Foote)]

Thank you very much for the information Paddy, but "Stephen B" is not me ;)

Spike