I hate that I went to school for this less than 10 years ago, and it is already all Greek to me.
Any way the circuit currently is:
So basically this buzzer is going off the entire time the door is open. What I'd like to do is make it do that the buzzer goes off for a set time and then shuts off until the next time the door opens. This could probably be done easily with a 555 timer, but I don't want to go that route. I want to know how to do it with simple components only. No ICs.
I think it can probably be done with a transistor, a capacitor, and a few resistors. Maybe a diode as well. Then changing the values would change the duration of tone.
Anybody have the know-how to draw up this circuit. I love testing my brain power while preserving plasticity.