RaZberry Zwave Controller
Neil S. showed RaZberry Zwave controller for the raspberry pi. It is a daughterboard that attaches to a portion of the GPIO. Zwave in Australia operates commonly around 921.42 MHz. People prefer zwave devices as opposed to wifi for better reliability.
Places to buy Electronics Hardware
Hackerspace have a frequently updated list here
John S. talked about Thingspeak, where you can view real-time graphs with data you upload from your arduino or pie using HTTP or MQTT.
Run Basic on the Raspberry Pi.