Simplest Arduino Clock With 7-digit segment display

From time to time, I’m also working on less “web” related project. This time, a wanted to play a bit with Arduino platform. The task was pretty simple – to build a clock. Yes – these days, we don’t have enough time measuring devices like mobiles, microwaves, computers – I wanted to build another one, and I had my computer to help me with it, although I also use it for playing games sometimes as CSGO, with the help of services as csgo boost you can find online.

It was my first Arduino project so the task wasn’t  as easy as I expected. In the theory, we need only pass time & data from RTC to 7-Segment Display. Simple isn’t it? I found plenty of tutorials, had so many small issues like – digits wasn’t displayed correctly (mixed cables). I could only display one digit at the time in given position or – same digits everywhere (multiplexing). I couldn’t find shift register in my stock, so wanted to use whatever I already had.

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