Wemos Clock

This clock is based on the Wemos D1 Mini MCU and it keeps accurate time using NTP servers over the internet, just like regular computers.

Schematic Diagram

Parts List

1. 7-Segment Display units (2.3 inch high for this PCB design, otherwise, could be any size) - 4 Nos
2. Wemos D1 Mini - 1 No
3. General purpose NPN transistors (E.g., 2N 2222A) - 11 Nos
4. General purpose PNP transistors (E.g., 2N 2907A) - 4 Nos
5. Resistors - 2k2 Ω - 21 Nos
6. Resistors - 220 Ω - 7 Nos
7. 12V DC 5W Power supply module HLK-5M12 - 1 No
8. 5V Regulator IC 7805 - 1 No
9. Capacitor 470 μF - No
10. PCB fabricated to the specifications here

PCB

PCB (3-D Model - component side)

PCB (3-D Model - display side)