Quantity   Component name
1 × Custom PCB
1 × ATMega328P Microcontroller
7 × 5mm LEDs
7 × 470 ohm Resistors
1 × 10k ohm Resistor For reset pull up
1 × AAA Battery Holder (switched) Option if used free standing
1 × CR2032 Battery Holder (switched) Option if used for earrings or hanging decoration