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# HomeSpan Extras
## Addressable RGB LEDs
HomeSpan includes integrated access to a number of ESP32 features you'll likely find particularly useful when constructing your HomeSpan devices.
## Pulse Width Modulation (PWM)
HomeSpan includes two dedicated classes that provide for precise control of Addressable RGB LEDs. The *Pixel()* class is used for RGB and RGBW LEDs that require only a single "data" control wire, such as the [NeoPixel 8-element RGB Stick](https://www.adafruit.com/product/1426) or this [NeoPixel Single RGBW LED](https://www.adafruit.com/product/2759). These LEDs typically contain embedded driver chips such as the SK6812 or WS2812. The *Dot()* class is used for RGB LEDs that require two control wires ("data" and "clock"), such as this [DotStar 144-element RGB Strip](https://www.adafruit.com/product/2241). These LEDs typically contain embedded driver chips such as the SK9822 or WS2801.
The ESP32 has up to 16 PWM channels that can be used to drive a variety of devices. HomeSpan includes an integrated PWM library with dedicated classes designed for controlling **Dimmable LEDs** as well as **Servo Motors**. Both classes are provided in a standalone header file that is accessed by placing the following near the top of your sketch: