Quantity   Component name
1 × Arduino Uno
1 × Prototype shield V.5
1 × 20 pin ZIF socket
1 × EL817 Opto and Fiber Optic Semiconductors and ICs / Optocouplers and Optoisolators
3 × 1K resistor
1 × 3K3 resistor
1 × 1N4007 Discrete Semiconductors / Diodes and Rectifiers
2 × LEDs Electronic Components / Misc. Electronic Components
1 × 12V supply