Beware of the delivery time though. It took them 3 weeks to ship the sensor from Lithuania to Estonia :) For pump and other peripheral control I plan on using

Beware of the delivery time though. It took them 3 weeks to ship the sensor from Lithuania to Estonia :) For pump and other peripheral control I plan on using an opto-isolated relay board. You can get one for really cheap and they're easy to setup with the Pi. Check this wiki on how to use the board in isolation mode. http://arduino-info.wikispaces.com/ArduinoPower http://arduino-info.wikispaces.com/ArduinoPower