[TriEmbed] Group LED Buy

Wed Dec 24 06:41:16 CST 2014

Sure... forgot the string lights had a couple different options.

   - UCS1903 - 3 wire, 400Kbps data, 24-bit color. Similar to WS2812 but
   half as fast. Only suited to VERY low framerate installs.
   - LPD6803 - Nearly identical to the LPD8806, except single RGB LED
   instead of dual and only 5-bits per channel instead of 7. Very fast,
   horrible color depth.
   - "RGB" - I have no idea what these are. I've never seen them in the
   wild or have any idea what chip they use. I have no idea how to even drive
   them

The string lights actually overlap with 2 chipsets, WS2812 (Which is the
same as WS2811) and WS2801. WS2812/WS2811 is a little confusing. I should
have been more clear. WS2811 is the actual chipset and protocol. WS2812 is
a 5050 SMD RGB LED with the WS2811 chip embedded inside of it. But the
string lights use a discrete WS2811 driver and a regular RGB LED so they
label them as WS2811. They are entirely the same thing as far as usage.
There's also WS2812B which is the 4 pin version of the 5050 LED. They are
also commonly referred to as NeoPixels, which is the brand name given them
by Adafruit.

On Wed, Dec 24, 2014 at 12:45 AM, jonathan hunsberger <1101010 at gmail.com>
wrote:

> Do you know offhand a similar breakdown for the pixel strings? I see there
> is one chip overlap with the strips but otherwise its kind of confusing
> with the similar but different part numbers.
> On Dec 23, 2014 9:05 AM, "Adam Haile" <email at adamhaile.net> wrote:
>
>> This is actually unrelated to the AllPixel Kickstarter, but I'm going to
>> be ordering a decent quantity of LED strips from the manufacturer that I've
>> used for about 3 years. (I'm building a VERY large display for Maker Faire
>> 2015). Which happens to be the same one we are using for the AllPixel
>> rewards. They make a wide array of high quality LED strip and strings (XMas
>> style lights).
>>
>> So, since it's always cheaper to buy in as much bulk as possible
>> (especially when shipping from China), I wanted to open up the option to
>> get in on the order to everyone with TriEmbed. These are insanely cheap as
>> they will be coming direct from the manufacturer. As much as 1/3 the price
>> as from places like Adafruit. I'm not looking to take any profit from this.
>> Everyone will get the pricing listed in the PDFs (plus shipping and
>> manufacturer's fees). Here's the details:
>>
>> Go here to get pricing PDFs: http://adamhaile.net/LEDPrices/
>>
>> As a quick reminder for those unfamiliar, here's the differences:
>>
>>
>>    - WS2812 (NeoPixel) - 1 wire, 800Kbps data, 400Hz PWM, 24-bit color.
>>    Cheapest but slow. Good for most things.
>>    - WS2801 - 2 wire (SPI), 1Mbps data, 2.5kHz PWM, 24-bit color.
>>    Mid-range speed and price.
>>    - LPD8806 - 2 wire (SPI), 24Mbps data, 4kHz PWM, 21-bit color.
>>    Fastest, most expensive. Great for POV displays
>>    <http://maniacallabs.com/2014/11/19/weekend-project-povstick/> or
>>    video applications. 1 IC per 2 LEDs so much use in LED pairs.
>>    - APA102 - The new hotness. 2 wire (SPI). IC built into the LED like
>>    WS2812. 12Mbps data. 2kHz PWM. A little more expensive than WS2812 but MUCH
>>    faster.
>>
>> All of these are controllable using FastLED on Arduino, with the AllPixel
>> and BiblioPixel, and in most cases on the Raspberry Pi (WS2812 and APA102
>> are complicated).
>>
>> For those that don't want strips but prefer christmas light style
>> strings, checkout PixelStringLights.pdf. Note however that in the interest
>> of a timely order I will not order anything that doesn't have green text
>> (PixelStringLights PDF only). The black and red text items are made on
>> demand and have a several week lead time.
>>
>> All are available in various levels of water resistance:
>>
>>    - IP40 - NOT waterproof in any way. Bare strip.
>>    - IP65 - Epoxy coating. Resists moisture and light splashes.
>>    - IP67 - Silicone sleeve. Submersible up to 1m for up to 30 minutes.
>>    (I have hit these with a pressure washer to no affect).
>>    - IP68 - Silicone sleeve AND epoxy coated. Pretty much impervious if
>>    you don't cut. Only available on some.
>>
>> All are sold as 5 meter rolls, except the string lights. See
>> the PixelStringLights PDF for length and quantity info.
>>
>> If you would like to order some, send me the Item Number (for
>> example: TW5050RGB32T-8806 - which is LPD8806, IP67, 32 pixels/m) and the
>> quantity in rolls (or strings). Note that the prices listed for the rolls
>> are PER METER not per roll. Multiply times 5 for the full roll price.
>>
>> You can probably ignore the 300m or more pricing. It's highly unlikely
>> we'll hit that (barely did for the Kickstarter). But I will still see if I
>> can get a better price... I've bought a LOT of leds from them :)
>>
>> Once I've had some time to collect everyone's orders, I will submit an
>> invoice request to the manufacturer. That will give me the final price with
>> shipping and fees. Generally, the fees are a 4% transaction fee for using
>> Paypal (I really don't like the idea of doing a bank transfer to China). So
>> you can assume about 4% more, plus shipping (was about $35 when I ordered
>> 10 rolls). Fees and shipping will be divided among everyone based on your
>> order quantity.
>>
>> I will then send a paypal invoice to everyone and once I get all payments
>> I will submit the order to the manufacturer.
>>
>> Since part of the point is to save on shipping, the intention is for that
>> anyone who orders to either pick up at a TriEmbed meeting or make other
>> arrangements with me. I'm unsure of the time frame on this since it depends
>> on when I get all the orders in and it usually takes a few weeks anyways.
>> So the sooner I hear from those interested, the sooner everyone gets their
>> LEDs :)
>>
>> Let me know if you are interested or have any questions.
>>
>> Adam Haile
>>
>> _______________________________________________
>> Triangle, NC Embedded Computing mailing list
>> TriEmbed at triembed.org
>> http://mail.triembed.org/mailman/listinfo/triembed_triembed.org
>> TriEmbed web site: http://TriEmbed.org
>>
>>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20141224/7558f0da/attachment.htm>