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The NeoPixel RGBW Shield – Warm White features 40 individually addressable RGBW LEDs in a 5×8 matrix, controlled from a single Arduino pin and stackable for even more bright, custom lighting effects.
Put on your sunglasses before stacking this onto your Arduino — this Adafruit NeoPixel RGBW Shield (Warm White) features 40 ultra-bright RGBW LEDs arranged in a 5 × 8 matrix for a powerful blast of configurable colour. Each pixel is individually addressable and controlled using just one pin (Digital #6) on your Arduino. If you need to use a different pin, you can cut a trace and reroute it to nearly any other digital pin for custom configurations. This is the Warm White RGBW version.
Each NeoPixel is effectively split into two halves: the familiar RGB LED, and a separate white LED with a yellow phosphor. Unlit, it resembles an egg yolk, but once powered it is extremely bright and can be controlled with 8-bit PWM per channel, giving 32-bit colour per pixel (8 bits × 4 channels). This makes it ideal for mixing vibrant colours with crisp white lighting effects. By default, the LEDs are powered from the Arduino’s onboard 5V supply, which is suitable as long as you’re not driving all pixels at full white brightness simultaneously.
For higher power needs, you can solder in the included terminal block (pro tip: mount it underneath for a lower profile) and connect an external 4–6V DC supply, which will power both the Arduino and the shield. If you want the shield powered via the terminal block but prefer to keep the Arduino itself on USB or DC jack power, simply cut the centre of the solder jumper located to the right of the terminal block. A polarity protection FET is included on the external input to guard against accidental reverse wiring.
If you need even more blinky goodness, the shields are chainable. Connect the second shield’s DIN to the first shield’s DOUT, tie the grounds together, and supply 5V power. You can chain as many as you like, although after five or more shields you may begin to run low on RAM when using an Arduino UNO. Both stacking headers and plain headers are included — use the stacking headers if you need access to additional Arduino pins for sensors or outputs, or the plain headers for a slimmer, sturdier installation.
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