Quantity   Component name
1 × Arduino pro mini or any other ATmega328 based clone. Will probably work on a whole variety of other Arduino's and clones.
1 × NEO-6M GPS module GY-GPS6MV2 GPS Module
2 × 74HC595 shift registers
3 × IN-14 nixie tubes
3 × 74141 nixie tube driver IC's
1 × 12VDC to 5VDC step down convertor
1 × 555 based boost convertor for Nixie tube power supply