Grove - LED Strip Driver ------------------------ The LED Strip Driver with 4-pin Grove interface provides easy connectivity to your standard Arduino device or Seeed Stalker. It can help you control the luminance of a single-color LED strip, as well as the color and the luminance of an RGB LED strip through Arduino or Seeeduino. ![enter image description here][1] It has 2 terminals and 2 Grove interfaces. The power for the LED strip comes in through the 2-pin terminal. And the LED controlling voltages output through the 4-pin terminal. The 2 Grove interfaces are respectively screen-printed “IN” (for controlling data input) and “OUT” (for controlling data shared with the next strip driver). It can drive an LED strip 1 to 2 meters long with 9 V, while 1 to 5 meters long with 12 V. The driver in conjunction with the colorful LED strips can add a wonderful effect to indoor or outdoor usages. Features Grove compatible interface Can be cascaded for a larger display Best results achieved with LED strips 5 meters long or shorter Outputs PWM signals 256 gray-levels are adjustable via programming Arduino and MEGA compatible Screw Terminals (power input and control signal output interface) For more detail, please visit: http://www.seeedstudio.com/item_detail.html?p_id=1197 [1]: http://www.seeedstudio.com/document/LEDStripDriver.jpg