Hello
I am using Dark activated circuit which is in black color in the attached image
but I thought it would be better to use buzzer with timed one
so I added other circuit which is blue color in the attached image
it has 555 IC
1) I would like to know if the circuit will work or not so I won't lose money buying components
2) how to make the whole circuit working with B1 or B2 only NOT two source?
3) what value should be for R9 ???
I am using Dark activated circuit which is in black color in the attached image
but I thought it would be better to use buzzer with timed one
so I added other circuit which is blue color in the attached image
it has 555 IC
1) I would like to know if the circuit will work or not so I won't lose money buying components
2) how to make the whole circuit working with B1 or B2 only NOT two source?
3) what value should be for R9 ???