Quantity   Component name
1 × AVR atmega328p microcontroller
1 × DS3234 Real-Time Clock (RTC) SPI
1 × 2.1mm Barrel Jack Power Connector (5V input)
5 × Various Headers (ISP, Serial, Buttons, Board-Board)
2 × MAX7219 7-Segment Display Driver
1 × NEO-7 u-blox 7 GNSS GPS Module Serial
4 × 4x7-Segment LED Display
1 × 3V Button Cell Battery (RTC Backup)
1 × 12mm Coin Cell Battery Holder SMD
3 × Buttons (Reset, Mode, Sync)
4 × Caps (De-Coupling)
3 × Resistors (Reset Pull-up, 7219 Current Set)