Quantity   Component name
1 × Raspberry Pi Series A or B
1 × 2N3904 Discrete Semiconductors / Transistors, MOSFETs, FETs, IGBTs, NPN
1 × 2N3906 Discrete Semiconductors / Transistors, MOSFETs, FETs, IGBTs, PNP
1 × Small Speaker
1 × Wire Resistors (Fixed) / Zero Ohm Jumpers
1 × Breadboard Electronic Components / Misc. Electronic Components
10 × Jumpers Electronic Components / Misc. Electronic Components
1 × Power Supply (5V, for Pi)
1 × 4.7KOhm Resistor Passive components
1 × 1M Ohm Resistor Passive components
1 × 10uF electrolytic capacitor