Category: hardware

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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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Getting Real – Using Blind Send SPI to Turbocharge the Adafruit DotStar Libraryspi,

Last time, we experimented with spiritual blind-sending as a way to theoretically speed up SPI on AVR. While there were lots of fancy oscilloscope traces and impressive demo code, there is nothing like an actual, real, practical application to get people excited. Read on to see how much faster we can make the already highly optimized AdaFruit DotStar library with a little blind-sending action… (spoiler alert – the answer is lots more faster!)
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SPI with a Blindfold On- speed up by letting go and trusting the machine

Constantly checking to see if the coast is clear feels responsible, but it wastes cycles. Sometimes it is better to leap (or load) without looking. With a little hand-coded assembly, we can run our AVR processor lock-step with the SPI hardware and blindly dump new bytes into it at precisely the right moment. Because we don’t spend any time reading and testing status bits, we can increase the maximum throughput by more than 20%. If the prospect of screamingly fast yet perfectly safe SPI turns you on, read on…
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