Round and round and round they go! 24 ultra bright smart LED NeoPixels
are arranged in a circle with 2.6" (66mm) outer diameter. The rings are
'chainable' - connect the output pin of one to the input pin of another.
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 and
you're ready to rock.
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 ring with 24 individually addressable RGB LEDs assembled and tested.