This project is Visitor counter Without microcontroller. It can help to Power saving by switch OFF the room lamps when no body in the room.
The circuit Explained in this Youtube Video:
To order this PCB first go to the website link below, Then click "Add to
card" then select the PCB color and quantity then click "Submit" and
after few minutes when review completed by the engineers, you can pay
for it by clicking on "Proceed to Checkout"
https://www.pcbway.com/project/shareproject/Visitor_counter_Without_microcontroller.html
https://www.pcbway.com/project/shareproject/Visitor_counter_Without_microcontroller.html
Parts list:
IC 40110 (2pcs)
IC 4093
Optocoupler PC817 (2pcs)
7Segments common cathode (2pcs)
Diode 1N4007 (4pcs)
Laser 5v 5mW (2pcs)
LDR (2pcs)
LED
Relay 5V
Transistor S8550
Capacitor 100nF (2pcs)
Capacitor 10uF
Capacitor 220uF
Resistor 1M
Resistor 1.5K (2pcs)
Resistor 100K
Resistor 6.8K
Resistor 4,7K (2pcs)
Resistor 200R (15pcs)
Circuit:
Video:
