This fume extractor is a much more streamlined design. It uses a USB-C PD module for power delivery and a potentiometer driven motor controller module to control the fan speed.

This was my second version of a fume extractor.

I simplified the design quite a bit from the first iteration by using a single PWM module for motor control. This version runs off of a DeWalt 20V battery, which makes it great for jobs where portability is a necessity.

This was one of my first 3D printing + electronics projects.

• A 3D printed housing that I designed for the fan and electronics

• A custom PCB to control fan speed controlled by a Dialog GreenPAK chip

  • Switch to turn fan on and off

  • Buttons to increase/decrease fan speed by adjusting duty cycle via PWM

• 80mm diameter high-CFM fan 

• Replaceable carbon filter to absorb fumes

• 12V barrel jack input