The Sensor & Sensor Assembly

• Soil Moisture Sensor
  SparkFun SEN-13322

The Project Box & Hardware

• xxx

The Electronics -- Arduino Layer

• Arduino Uno-R3 -- SparkFun DEV-11021

The Electronics -- Input Board

• xxx

The Electronics -- XBee Layer

• Arduino XBee Shield -- SparkFun WRL-12847
• Stackable Headers -- generic
  2x -- 6 pin
• Stackable Headers -- generic
  2x -- 8 pin
  
  
• Logic Level Converter -- SparkFun BOB-12009
• Male headers -- generic
  2x -- 7 pin
  
  
• Xbee Series 2 radio -- Digi International