- GPIO pins https://www.raspberrypi.org/documentation/usage/gpio/
- 1-wire wiring https://learn.adafruit.com/downloads/pdf/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing.pdf
Similar pojects
- http://hackaday.com/2010/01/31/120v-switching/
- http://www.reefcentral.com/forums/showthread.php?t=2124770
TODO
- Fix && logic