PCA9685 needed to control 4 MG996R servo motors for the playing of the Fiends and Light game. For more information on the game, please visit "Home" on the Site Menu. For more detailed documentation on how to create the game using the PCA9685, please visit the Blog posts to find out more. Finally, download the Electrical Components zip file on the Shop to see more on how PCA9685 play a part in the creation of the game.