It is quick and easy to add some peripherals to your WLED controller and projects. Why would you want to do this when WLED has a web interface, mobile app and can also be controlled by automation systems like Home Assistant? Well, sometimes you can't beat the convenience of a nearby local pushbutton to do something like turn your LEDs on or off, or quickly select a favorite effect or even start a playlist without the needing to use your phone, tablet or computer.