/rpi

https://www.raspberrypi.org/blog/controlling-electrical-sockets-with-energenie-pi-mote/

https://energenie4u.co.uk/index.php/catalogue/product/ENER002-2PI

http://www.frightprops.com/lighting/thunder-lightning-controllers/lights-for-lightning-controllers/500-watt-portable-halogen-light-for-lightning-controllers-0797.html

https://www.amazon.com/Smraza-Starter-Ultrasonic-distance-Raspberry/dp/B01MATM4XF/ref=sr_1_1?s=electronics&ie=UTF8&qid=1506215665&sr=1-1&keywords=RASPBERRY+PI+2+DISTANCE+SENSOR

https://www.raspberrypi.org/documentation/usage/audio/

http://ouimeaux.readthedocs.io/en/latest/installation.html