PCA9685 PWM Controller Mount for Snapmaker Original / Universal Beam

A dedicated mount for the PCA9685 16-channel PWM controller, specifically designed for the Snapmaker Original. The main purpose of this mod is to solve a common Snapmaker limitation: the lack of controllable fan ports. By adding this PCA9685 module (best used with Klipper or an additional MCU), you can gain independent PWM control for multiple fans, such as part cooling, heatsink, or electronics bay fans.