Quantity   Component name
1 × attiny85-su
1 × mcp23017 Microprocessors, Microcontrollers, DSPs / IO Controllers
2 × 10k Resistor (i2c pullups)
16 × 0805 LEDs (various colors)
16 × SMD 0805 led current limiting resistor
1 × CR2032 Cell Holder
1 × power switch