Quantity   Component name
2 × PC fan 12V, 0.12A PC power supply cooler
1 × Adafruit ESP8266 Huzzah
1 × BC337 NPN, 800 mA
1 × MP1484 Module Power Management ICs / Switching Regulators and Controllers
1 × 1k resistor
2 × PCB 2.5mm Barrel connector plug+socket
1 × 12V power supply