Quantity   Component name
1 × Arduino Uno
1 × Microphone Breakout
1 × General Purpose Transistor NPN
2 × Capacitor 100 nF
2 × Capacitor 100 µF
1 × Resistor 1k ohm
1 × Resistor 1M ohm
2 × Current Sense Through Hole Resistor, 15 ohm
1 × LED (generic)