Quantity   Component name
1 × Old unit with broken fans.
1 × Attiny45 or 85
1 × 100µF capacitor
1 × Small Prototype PCB
1 × DIP8 socket Power Management ICs / Power Supply Support
2 × 4.7kOhm resistor
1 × IRL530N or any N-MOSFET
8 × Wire Resistors (Fixed) / Zero Ohm Jumpers
2 × Fan Non-IC RF, IF, RFID, ZigBee Components / Inductors and Coils
2 × Connector for Fan
1 × DS18B20 or other temperature sensing device.