What It Is: 

This open-source solution eliminates complex wiring and provides precise 4-pin PWM fan control for your StealthMax air filter. It supports I2C air quality sensors, controls LEDs, and integrates smoothly with Klipper firmware. Connect effortlessly via CAN Bus or USB Micro B for a streamlined and efficient printing experience.

Includes: 

- 1x 4-Pin PWM Fan Control
- 2x I2C Sensor Connectors
- 1x LED Connector
- 1x CAN Bus Connector

note:  hardware is made to be used in nevermore filters but its not designed or related to the nevermore team.