This is the easiest way possible to add small, bright RGB pixels to your project. Adafruit have taken their ever popular NeoPixels and made them breadboard friendly, with two rows of 3 x 2.54mm spaced header holes on each side for easy soldering, chaining and breadboarding. These ultra-bright LEDs have a constant-current driver cooked right into the LED package! The pixels are chainable - so you only need 1 pin/wire to control as many LEDs as you like.

These pixels have full 24-bit colour ability with PWM taken care of by the controller chip. Since the LED is so bright, you need less current/power to get the effects you want. The driver is constant current so its OK if your battery power changes or fluctuates a little.

Each pixel draws as much as 60mA (all three RGB LEDs on for full brightness white). An Arduino can drive up to 500 pixels at 30 FPS (it will run out of RAM after that). Using ribbon cable you can string these up to 6" apart (after that, you might get power droops and data corruption).

Each order comes with 4 individually controllable pixels. Please Note: In one of the photos above we show the pixels with headers soldered on, but the pixels do not come with any headers. If you need headers then we sell strips of breakaway headers here.

Features

• Dimensions: 0.4" x 0.5" x 0.1" / 10.2mm x 12.7mm x 2.5mm
• 0.5" (12.5mm) diameter circle PCB, 0.1" (2.5mm) total thickness
• 800 KHz speed protocol
• Chainable design
• 5-9VDC power (can run at 3.5V but color will be dimmed), constant current 18.5mA per LED (~55mA max total per pixel)

Useful Links

Datasheet for WS2812

Adafruit NeoPixel UberGuide - Everything you need to know to use NeoPixels

NeoPixel Arduino library