Hund bark sensor (5 / 5 steg)
Steg 5: källor
http://www.Raspberry-projects.com/pi/software_util...
https://www.adafruit.com/products/856
https://www.adafruit.com/products/1063
http://www.rs-online.com/designspark/Electronics/e...
https://upload.wikimedia.org/wikipedia/commons/3/3...