Hello
Thank you Mr.ljcox and thanks to all you guys
I learned a lot of things from your experience I really appreciate it
I decided to use this circuit because it's working just fine and I tested it in my breadboard and every thing seems to work just fine, like I wanted
I test it in dark and light mode all fine no problems at all
the response and sensitivity perfect
you know I want to make 7 more circuits like this one, that’s why I am looking for less components and less cost
I have one more request I know I am starting to bother you guys but I really need your help
I want to integrate this (7 Segment LED Counter) to my circuit
https://www.aaroncake.net/circuits/counter.asp
I bought the components but you know lack in knowledge and lack in connections skill
I want that when the buzzer is activated it will send pulses to the new (7 Segment LED Counter) circuit then the number will appear then when the buzzer is activated again then it will add and the number will be 2 and so on just like counting system
The number should rest when the switch is close (power off)
I think its simple task but not easy for me
So help please in (the knowledge and connections)