https://www.youtube.com/watch?v=F_0IWigqhXk If you use brushes on a regular basis, you've probably been annoyed with how long it can take to dry the bristles. This project uses a small fan to help dry up to 9 brushes at a time. We even added Ultraviolet LEDs to help sterilize and disinfect the bristles. read the full step by step build instructions on: https://learn.adafruit.com/uv-brush-cleaner/overview