Solder Fume Extractor
Overview
This is a simple fume extractor I designed to filter out fumes during the soldering process. It uses a custom PCB, an Arduino microcontroller, a PC fan, and an activated charcoal filter all enclosed in a 3d printed assembly. It also has a toggle on/off switch, a speed control knob, and a screen that shows the fan speed.
Key Features
- Custom PCB for motor control and power distribution
- Variable fan speed control
- Fully 3D-printed enclosure
Mechanical Design
I designed the fume extractor in Onshape. It uses 3D printed parts that are attatched together using heat set inserts. The filter is removable and the bottom cover is also removable and houses the electronics.
Electronics & Control
The PCB was designed in EasyEDA. It takes a 12v DC input which supplies the PC fan and then a buck convertor converts the 12v to 5v for the rest of the electronics.
It uses an Arduino Nano as a microcontroller that allows for fan speed control and a display screen that displays the fan speed.
Results
The fume extractor effectively captured solder fumes and worked reliably. The speed control was also worked and allowed the fan speed to be turned up or down.