HandwashingTimer
30 sec timer for hand washing with water sound detector.
Demo Video
Twitter -> (https://twitter.com/i/status/1249699639462211584)
Parts List
| Parts | Qty |
|---|---|
| M5Stick-C | 1 |
Dependencies
ArduinoFFT (https://github.com/kosme/arduinoFFT)
How does it work
Water sounds have a characteristic frequency spectrum that is close to white noise. We will use this feature. Support Vetor Machine is used to determine if the sound is water or not.
Author
Yutaka Usui (https://github.com/yutakau)