In addition to a Prototype board (Breadboard), wire for connections and a power source, you will need the following components to build this circuit:
1 x 100KΩ Preset Potentiometer (Variable Resistor)1 x 10µF Capacitor1 x 555 timer IC1 x 220Ω Fixed Resistor1 x 100Ω Fixed Resistor1 x LED2 x Push To Make Switch (can be simulated by just using two wires to touch then release)1 x C106D Thyristor1 x BC548B Transistor1 x 3V Buzzer