Itsy Bitsy Teenie Weenie Mini NeoPixel RGB LEDinis! Make your own smart LED arrangement with the same integrated LED that is used in our NeoPixel strips and pixels. We use this same LED in our Metro M4 Express and Neo TrinKey.
These MINI (3.5mm x 3.5mm) RGB LEDs are fairly easy to solder and are half the size of the standard 5x5mm NeoPixels you may be used to seeing. They're one of the most compact ways possible to integrate multiple bright LEDs into a design. The driver chip is inside the LED and has a constant current drive so the color will be very consistent even if the voltage varies, and no external choke resistors
This is the Pack of 100 NeoPixel Mini RGB LEDs with a Black Casing. Don't need so many? We also have 10-pack minis in black casing and white casing here. These come in a cut tape strip so can be used in a feeder if a leader is taped on.
The LEDs are 'chainable' by connecting the output of one chip into the input of another - see the datasheet for diagrams and pinouts. To allow the entire chip to be integrated into a 4-pin package, 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 microcontroller 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. The LEDs basically have a WS2811 inside, but fixed at the 800KHz 'high speed' setting. 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.
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