Quantity   Component name
1 × Arduino Nano R3
1 × Linear regulator (7812)
1 × Transistor BC337
1 × transistor BC547
1 × BT139 600 Triac
1 × graetz bridge 1A
1 × 4.7V Zener diode
1 × 1N4007 diode
3 × Rotary potentiometer
1 × resistors, capacitors
1 × Small trafo 220/12V