825c3096f2
32768 Hz quartz chrystal resonator tends to be a bit inaccurate giving about 5-10 seconds per day time skew
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