- DC/DC buck boost converter (3€ on ebay)
- USB battery pack 5€
- scrapped fan
- scrapped switch
- scrapped potentiometer
- Hammond prototype case (1€, same as my USB motion sensor)
- nice labels
- double side tape
Enough talk, a picture:
And in action, can suck up to 15cm at medium speed:
This “hack” took me 30min, and costs close to nothing, while some have been down to build a DC/DC converter for this!
Thing to add in the future:
- active carbon filter for better filtering, but usable as is for small jobs: you don’t get fumes in your face anymore.
- USB light for soldering in the dark
My favourite use: in the freezer/fridge, when you forgot to chill beers for an unexpeted party, it takes only 10min to have freezing beer instead of 1h. (remove the carbon filter first…)