Quantity   Component name
1 × C3: 100nF Capacitor
1 × SW1: Button Button
1 × TH1: TS-NTC-203 20k Ohm thermal resistor
1 × SP1: Speaker 8 Ohm
1 × IC1: ATTINY13 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × U1: LM386 Audio ICs / Audio Amplifiers
3 × D1, D2, D3: LED (red) Fiber Optics / Emitters
3 × R3, R4, R5: 220 Ohm Resistor
1 × R1: 10 Ohm Resistor
1 × R7: 10k Ohm Resistor
1 × R6: 20k Ohm Resistor
1 × R2: 10k Ohm Potentiometer
1 × C1: 250µF Capacitor
1 × C2: 0.05µF Capacitor