Simple Clock

Just clock that shows time, accurately.

Component base is very simple:

• Arduino NANO v3 chinese replica
• 7 segment 4 digit LED indicator with common anode, FYQ-5641BG-21
• 8 resistors that limiting current on LED segments, 330 Ohms, 0.25 watts
• RTC Module GEEGROW with DS1307 chip
• 5x7 cm single side prototyping board
• usb phone charger as power supply
• 2 push buttons
• 1 on/off switch
• Gainta G521G enclosure (92x66.5x28мм)
• 5m power cord