Arduino clock

Hello today I will make clock for my work desk, couple years ago I created clock based on attiny85 and DS1307 RTC, but problem is that this OLED display is not great choice for clock. After one year display was very hard to read. So I decided to make another clock but this time I will use this sevensegment display. I will also use beter RTC chip, DS3231. I designed custom pcb and for first time I used pcbway service. I orderd my pcbs very easy and as new customer I recived this first order for free. I payed only shipping cost. Which was 8 american dollars. My location is Croatia. So I got this 10 beaudiful pcb for only 8 dollars.