A Quick Test for Crappy WS2812B Neopixels

TLDR; If you see ink flooding around the die when you touch a Sharpie to the face of a Neopixel, you should probably throw away the batch. Disturbing video example after the jump. 

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I recently found a huge lot of WS2812B Neopixels on Alibaba for $3/meter, which is about 1/2 the going rate in China and about 1/8th the price for similarly spec’ed strips on Adafruit. So I bought a lot (both meanings) of them. A NeoPixel is a NeoPixel, right? How bad could these NeoPixels be? Very bad, it turns out…

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When to Lie

 

Question #1

Your grandma has Alzheimer’s disease. This morning she woke up and could not find her husband. He died 5 years ago. If you tell her, she will be sad and upset… at least until she wakes up again tomorrow. Should you lie?

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trumpWap – Make the web great again

Remember when almost every image on the internet was trump?

With trumpWAP, we can make the web great again. This is huge.

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Plug in the trumpWap and on day-1 you’ll get between 20% and 90% more trump (depending on your browsing habits). It’s that simple.

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Continue reading for more examples of trumped up websites & apps, a perfunctory video demonstration, and info on getting your own trumpWAP!

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Bigger is better: Build an Arduino-powered monster scrolling LED sign for about $15 a foot

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Would you do with a massive full color animated LED display? How about…

  • Read your Tweets in giant 140 char gulps from a block away
  • Add English sub-titles to the Eiffel Tower
  • Display a live-updating, 45 digit long countdown of the number of atoms left in the known universe

What if you could build the display however long you needed it, for only about $15/foot?

What if it was really easy to build and used everyone’s favorite low cost micro-controller so you could easily change the software to do whatever you wanted?

Well you can! Read on for details and perfunctory video!

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Parallel Processing Arduino Style – Make Massive NeoPixel Displays With Nanoscale Concurrent Computing

We’ve already seen that it is possible to drive thousands of WS2812B NeoPixels with a lowly Arduino using careful bit-banging. But what if we could bang out 8 bits at a time rather than sending them single file? Could it be possible to drive 8 times as many strings (or get 8 times the refresh rate) from our Arduino by processing bits in parallel? It would be like having a tiny pipelined GPU render engine inside our Arduino!

Read on to find out the results of a quick proof-of-concept test!….

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