A simple fume extractor with adjustable fan speed.
Simple board for controlling fan speed!
Materials used:
- x1 15x15 JLCPCB shipping box
- x3 Helping hands arms
- x1 Custom PCB for fan control
- x1 BD139 Transistor
- x1 120mm 12V fan
- x1 female JST PH 2.0 connector
- x1 10k Potentionmeter
- x1 12V Power supply
- x1 Activated carbon filter sheet
- x1 1k Resistor
- Any paperweight, I used glass fairy stones!