Quantity   Component name
2 × 1.5" Sprinkler Valve with DC Latching Solenoid
1 × Raspberry Pi
1 × Custom PCB with H-bridge and A/D converter circuits
2 × Wixel 2.4 GHz USB Wireless Module
1 × USB WiFi Adapter
1 × Magnetic Reed Switch
1 × 12VDC to 5VDC switching power converter
4 × 1/4" NPT 0-5V output pressure transducer
1 × Enclosure