I made this for New Year’s Eve. It has 114 RGB pixels and an MSGEQ7 chip to analyze audio. The pixels are all turned down to 51 max brightness (out of 255). I used an Arduino to control the pixels in one continuous chain, and a USB battery pack for power.
Adafruit NeoPixel Digital RGB LED Weatherproof Strip 60 LED -1m – You thought it couldn’t get better than our world-famous 32-LED-per-meter Digital LED strip but we will prove you wrong! You wanted twice the LEDs? We got it (well, its 1.875 times as many but that’s within a margin of error). You wanted thinner strips? Now only 12.5 mm wide, 10 mm if you remove the strip from the casing. You wanted less noticable strip color – this strip has white-colored flex PCB, which will be less visible against white-painted walls.
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