Blink any color you need! Use the Tri-Color LED board as a simple indicator, or by pulsing the red, green, and blue channels, you can create a light of any color. Very bright output. This is a common anode design - to turn on a channel you simply need to ground one of the R/G/B pins to illuminate that channel. Dimensions: - 20mm outer diameter - Thin 0.8mm PCB Look for these LilyPad Boards to make your project complete:LilyPad Temperature Sensor (Search ASIN B072LPGL9B ) - Sense and take action based on ambient temperature LilyPad Pixel Board (Search ASIN B01GQCJI1M ) - Add programmable lights to your project! LilyPad Light Sensor Module (Search ASIN B01GK0Z4SQ) - Detect and react to changing light conditions! LilyPad Tri-Color LED (Search ASIN B01GIOHRZ2 ) A single LED that can be programmed to be any color! LilyPad Buzzer Board Module (Search ASIN B01GIN52O6 ) - Add a buzzer to your project! LilyPad Accelerometer (Search ASIN B01GIIC1J0 ) - Detect and respond to movement across the X,Y and Z Axis. LilyPad Button Switch (Search ASIN B01GBOS910 ) - Add a momentary switch - press, power is on! LilyPad Coin Cell Battery Holder (Search ASIN B01BYGAY90 ) - Battery holder with switch for your project. LilyPad Conductive Thread (Search ASIN B01CAY55O4) - Conductive thread to wire the components together. LilyPad ATmega32u4 (Search ASIN B01BK18VPI ) - What makes them all work!