Fume extractor (140mm)

This is another fume extractor powered over USB and using an 140mm silent computer case fan. You can add a carbon filter in the front. You need the following components:
- 1 x 140mm/25mm 12V computer case fan (any model)
- 1 x 3mm red LED
- 1 x DC-DC Boost Step up Conversion Module MicroUSB 2V-24V to 5V-28V https://www.ebay.co.uk/itm/DC-DC-Boost-Step-up-Conversion-Module-MicroUSB-2V-24V-to-5V-28V-9V-12V-24V-T-P0/113946837810
- 1 x mini power switch
https://gigdigit.com/power-switch-mp-select-mini-v1-v2/