Quantity   Component name
1 × Capacitor SMD 1206 4.7µF capacitor
3 × 220Ω Resistor SMD 1206 220Ω resistor
1 × 12V DC Jack BarrelJack_Wuerth_6941xx301002
2 × 3 pins fan header FanPinHeader_1x03_P2.54mm
1 × 4 pins header PinHeader_1x04_P2.54mm
2 × 2 pins header PinSocket_1x02_P2.54mm
1 × 3 pins socket PinSocket_1x03_P2.54mm
1 × Raspberry Pi 40 pins socket PinSocket_2x20_P2.54mm
1 × Screw terminal TerminalBlock_RND_205-00002_1x03_P5.00mm
2 × 510Ω Resistor SMD 1206 510Ω resistor
2 × 1k Resistor SMD 1206 1kΩ resistor
3 × 10k Resistor SMD 1206 1kΩ resistor
2 × LED SMD 0805 red LED
1 × Buck module Buck module http://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5575538716&toolid=10001&campid=5338666514&customid=&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2FMP1584EN-Ultra-Small-DC-DC-3A-Power-Step-Down-Adjustable-Module-Buck-Converter%2F133251283459%3Fhash%3Ditem1f06653a03%3Ag%3AE1gAAOSwtdtd2-JS
1 × 4N35 optocoupler THT 4N35 photocopler DIP-6
1 × Relay Relay 5V SPDT Omron-G5LE-1
4 × 2N2222 transistor THT 2N2222 transistor TO-92 wide
2 × Zener diode SMD SOD-80C zener diode