Quantity   Component name
1 × ATTiny85 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × CR2032 Coin Cell Battery
1 × 2N2222 NPN Transistor
1 × 1N4001 Diode
1 × 47 Ohm Resistor
1 × 100 Ohm Resistor