Arduino nano clock based on the DS1302 realtime clock module and the TM1637 sevensegment indicator.
Real Time Clock: DS1302: http://ali.pub/454r4k
Sevensegment indicator TM1637: http://ali.pub/454rlo
Arduino Nano: http://ali.pub/454su0
Connecting wires: http://ali.pub/454s27

All parts can be bought cheaper with the Backit cashback service: http://ali.pub/459dl5

Sketch and libraries: https://drive.google.com/file/d/14FS0...

In this video, I showed an easy way to build a watch on an arduino nano. The project is suitable for beginner arduino workers, and those who want to understand the work of a sevensegment display or a realtime clock module.
To connect all the elements you need only 9 wires. A 10kΩ resistor may also come in handy, but without a resistor, everything worked fine for me.
Watches made as simple as possible. To set the time, go to the port monitor and enter the hours and minutes together. For example, to set 8 hours, 45 minutes, you need to enter the number 845 in the port monitor and press "Enter" The current time is written to the DS1302 chip and displayed on the TM1637.
Instead of a sevensegment indicator, you can use any display with which you know how to work.

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