Quantity   Component name
1 × PIC12LF1571 8-Pin MCU
3 × 22k 0805 Resistors
2 × 4k7 0805 Resistors
1 × 100nF 0603 Capacitor For decoupling
1 × Linx BAT-HLD-001-THM CR2025/2032 battery retainer, through hole
1 × CR2032 battery ~200mAh of sheer power
1 × 4-pin through hole tact switch (eg 450-1804-ND)
1 × 3mm LED, green
1 × Murata piezo PKM13EPYH4000-A0 Through hole piezo buzzer