After we "invented" an extremely compact and efficient protocol in The Nextion MEGA IO project – Part 1, allowing to control up to 8 MCUs with their up to 12 PWM pins, 32 GPIO pins, and 16 ADC pins each (in case of the Arduino Mega) with only 3 bytes, it's now time to move from theory to practice! Our first goal was and is to make things better than in this project, where we used only 3 PWM channels and only a slightly reduced PWM resolution (7 instead of the theoretically possible 8 bits) for the sake of simplicity. Controlling a RGB LED this way limited the color resolution to 2 millions of colors instead of 16 millions as some attentive readers had noticed and reported back. Thus, we start a huge demo project today, with 12 sliders for the 12 PWM channels of the Arduino Mega, distributed over 2 screen pages, PWM1, and PWM2, having all the full 8bit range supported by the Arduino Mega.