Be the belle of the ball with the NeoPixel Jewel! These NeoPixel
Jewels now have 4 LEDs in them (red, green, blue, and white) for
excellent lighting effects.
This is the Cool White RGBW version. We also have this jewel in
Natural White and Warm White,
The NeoPixel is 'split', one half is the RGB you know and love, the
other half is a white LED with a yellow phosphor. Unlit, it resembles
an egg yolk. Lit up these are insanely bright (like ow my eye hurts)
and can be controlled with 8-bit PWM per channel (8 x 4 channels =
32-bit color overall). Great for adding lots of colorful + white dots
to your project!
We fit seven of our tiny 5050 (5mm x 5mm) smart RGBW LEDs onto a
beautiful, round PCB with mounting holes and a chainable design to
create what we think is our most elegant (and evening-wear
appropriate) NeoPixel board yet. Use only one microcontroller pin to
control as many as you can chain together! Each LED is addressable as
the driver chip is inside the LED. Each one has ~18mA constant current
drive so the color will be very consistent even if the voltage varies,
and no external choke resistors are required making the design slim.
Power the whole thing with 5VDC (4-7V works) and you're ready to rock.
NeoPixel LEDs use 800 KHz protocol so specific timing is required. On
NeoPixels, the PWM rate is ~400 Hz, which works well but is noticable
if the LED is moving.
The LEDs are 'chainable' by connecting the output of one Jewel into
the input of another. There is a single data line with a very
timing-specific protocol. Since the protocol is very sensitive to
timing, it requires a real-time microconroller such as an AVR,
Arduino, PIC, mbed, etc. It cannot be used with a Linux-based
microcomputer or interpreted microcontroller such as the netduino or
Basic Stamp. Our wonderfully-written Neopixel library for Arduino
supports these pixels! As it requires hand-tuned assembly it is only
for AVR cores but others may have ported this chip driver code so
please google around. An 8MHz or faster processor is required.
Comes as a single round board with 7 individually addressable RGBW
LEDs assembled and tested.
* Adafruit NeoPixel Library @ GitHub