Quantity   Component name
1 × ATTINY88-15AZ ATTINY88 MCU
1 × TLC6C5912 LED shift register/driver
3 × CAY16-331J4LF 4x330 Ohm resistor array (adjust as needed for LEDs)
10 × MBT3904DW1 dual NPN transistor
2 × CL21B105KAFNNNE 1uF ceramic capacitor
1 × 5x2 male pin header
4 × Common anode 7-segment display module https://www.sparkfun.com/products/9480, any color
1 × PCB (link to OSHPark in links section)