How can i combine the two circuits in a way that when the microphone is off only the photo diode will lit the led an vice verse? Should i use a pnp and npn at the outputs of the op amps?
Ok...if i use the op amp as preamp and comparator i will need more switches in my case - limited space - Using the switches i already have i will use each op amp as comparator for the trigger, one switch to toggle between sound and light sensor and one for light/dark. I think this conclude my space usage in the box. The only thing i am concerned about is "Will the circuit do the job?"
I'm waiting yours opinions.