Quantity   Component name
1 × Arduino Nano R3
1 × Module for weak signal amplification with LM358
1 × IRF730 mosfet transistor
2 × Rotary Potentiometer, 10 kohm
1 × Buzzer
1 × LED (generic)
3 × Rechargeable Battery, Lithium Ion
1 × General Purpose Transistor NPN (second version)
1 × Resistors and capacitors (second version)