Build Instructions

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• 1

  Realize you're late and order parts.

  Order all the SMD LEDs you can find for next-day delivery on Jolly Jeff's Shenzhen Express. Not enough? Find another seller. Who cares if they don't match? Also get the first set of usb sockets that'll arrive. Get some 18awg wire (it's under 1mm) and some 24awg wire (This can sit on the pads and still be under 1mm). Also get some high-temp double-sided tape. It's not hot enough to survive much direct iron contact but YOLO so just send it and see what happens.

• 2

  Lose a few LEDs and realize that you have to get creative with your URL because now you don't have enough for all those characters..

  This step is mandatory.

• 3

  Figure out QR code

  You need a low-level QR library like https://www.nayuki.io/page/qr-code-generator-library so you can modify the code until it works. Turn error correction all the way down, and then keep changing your URL until it the qr is the minimum size possible. Change the mask pattern until there's no large blocks of light or dark pixels.
  Now's the fun part: Count the pixels and make sure you have enough LEDs. There should be less than 250, with some allowance for losing them or burning them out.
  Print out a dozen copes of  your QR code until it is sized like a business card and each pixel is roughly the size of a 1206 led.
  

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