Quantity   Component name
1 × copper-clad board
1 × ATTiny85 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × DIP8 socket
1 × SSD1306 OLED Screen
1 × 4 pin 2.54 female header
1 × CR2032 Battery holder
1 × CR2032 Battery
2 × 10kOhm pull-down resistor
2 × push button
1 × piezzo speaker