Adafruit
NeoPixel Nano 2020 RGB LEDs - 100-pack
· MPN: ADA6428
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These incredibly small surface-mount LEDs are an easy way to add a lot of very tiny (but bright!) colorful dots to your project. They are just mind-bogglingl...
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These incredibly small surface-mount LEDs are an easy way to add a lot of very tiny (but bright!) colorful dots to your project. They are just mind-bogglingly small - 2mm square. As they are pretty darn tiny, they might be a bit difficult to hand solder. SMT techniques with solder paste and hot air will work best here.
These Nano (2mm x 2mm) RGB LEDs are one third the size of mini 3535-sized NeoPixels and a sixth of the size of standard 5050mm NeoPixels you may be used to seeing. They're the most compact way possible to integrate multiple bright LEDs to a design. The driver chip is inside the LED and has ~12mA constant current drive, so the color will be very consistent even if the voltage varies, and no external choke resistors are required making your design minimal. Power the whole thing with 5VDC, and you're ready to rock.
There are three LEDs inside, red, green, and blue. The RGB LEDs are controlled by a tiny chip that take a 24-bit color level via the clock and data in, and then does all the PWM control for you. You just 'set' the color data once. Like any NeoPixels you can chain them together, the output of one leading into the input of another for near-infinitely long strips.
You get 100 pieces as 10 strips of 10, not one long strip.
Please note this is a surface mount part! It is possible to solder thin wires to the pads, but it's designed for use on an SMD PCB. If you are not comfortable with hand-soldering SMD parts, check out our other RGB LEDs, such as the thru-hole ones or in pixels/strips.
Jargon buster
Plain-language definitions for the technical terms used above.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
- RGB
- Short for red, green and blue, usually referring to an LED that can mix those three colours. It matters because controlling an RGB LED teaches how separate outputs combine to create different colours.
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