Pixie LEDs use a 3-wire UART interface at 115200 baud, with each 3W pixel integrating a Microchip PIC microcontroller for 16-bit PWM color mixing and gamma correction. Data is sent as RGB bytes per pixel and daisy-chained, enabling precise, smooth gradients and animations. The protocol is robust, easy to use with microcontrollers, and supports long chains with minimal latency, making Pixie ideal for installations requiring ultra-bright, individually controlled pixels.