This circuit is a Digital LED Clock Without using arduino or any other Microcontroller.
Features:
1- No coding / programing needed (No Microcontroller)
2- Single IC
3- Alarm
4- Big LED display
You can order this PCB from here:
https://www.pcbway.com/project/shareproject/Digital_LED_Clock_Without_Microcontroller.html
Parts List:
IC LM8560
IC 7805
Transistor 2N2222 (4pcs)
Transistor 2N3906
LED (59pcs)
Resistor 100K (2pcs)
Resistor 2K
Resistor 33 Ohm (2pcs)
Resistor 200K (2pcs)
Resistor 10K (2pcs)
Resistor 4.7K (2pcs)
Resistor 4.3K (2pcs)
Capacitor 470uF
Capacitor 100nF (2pcs)
Capacitor 1nF
Capacitor 15nF
Diode 1N4007 (6pcs)
Push button Switch (5pcs)
ON-OFF Switch (2pcs)
Piezo Buzzer
Coin cell Battery (2pcs) + Holder (2pcs)
Screw terminal
Circuit:
Video:
In following video you can see how this circuit works
