Also, I am a software guy, so don't take what I say as gospel. While I've read about the large installations, the most neopixels I have hooked up is 48 or 64, and I carefuly limit the power of the LEDs so that it fits in the 75mA power budget of the Teensy 3.1, so I don't have do multiple power installations. My main microprocessor of choice is the Teensy 3.0/3.1/LC, but I have also used Trinkets, Gemmas, Digisparks, Squarewears and A-stars. I suspect also you need to be more careful about the various best practices in the uber guide (resistors on the data pin, capacitors near the power supply, adequate power, etc.).Ī couple of caveats, I have never used a Mega, and I have used an Uno in the past, but not recently. You probably can also use a regular Trinket or Gemma (512 bytes).Īlso, note when you get up to 50 or so neopixels, you need to start worrying about how to power the neopixels (or keeping the brightness down to so it is within your processor's power limit). You should be able to use an Uno (2k SRAM) or Trinket Pro for it. Also, the high neopixel setups using Teensy or FadeCandy emit the lights in parallel, and use various processor specific optimizations to achieve the high number of neopixels.Įach neopixel takes 3 bytes of SRAM, which means you might be able to hold the data for 2,500 neopixels on the mega if you don't use much of SRAM for anything else.
16mHz), and it has more SRAM memory (64 kilobytes vs.
A Teensy 3.1 is a faster processor (96mHz vs. Our detailed NeoPixel Uberguide has everything you need to use NeoPixels in any shape and size.Note, the 4,000 neopixel setup used a Teensy 3.1 and not a Mega. With very minimal or even no soldering you'll have a super glowy strip obeying your every command! We recommend Arduino UNO, Adafruit Metro, Trinket 5V or Pro Trinket 5V but many other microcontrollers may work if they have a NeoPixel or WS2812 library available. Note: The 5V Trinket shown in photos is not included! You will need this or another type of microcontroller to control the LED strip.
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