Soldering Fume Extractor

Features:

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

  • A custom PCB to control fan speed

    • Switch to turn fan on and off

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

    • Circuit is controlled by a Dialog GreenPAK chip

  • 80mm diameter high-CFM fan

  • Replaceable carbon filter to absorb fumes

  • 12V barrel jack input

Custom PCB

I designed this 2-layer PCB to interface between the switch, buttons, fan, power supply, and GreenPAK chip.

GreenPAK Control Circuit

I created this digital logic circuit to drive the fan via PWM in a Dialog GreenPAK SLG46826G chip. GreenPAKs can be thought of as miniature FPGA's with some analog components included as well. They are configured with Dialog's GreenPAK Designer software.