I had a simple idea of replacing the door bell button on a wireless door bell setup with a reed switch. The idea being that I could then use the reed switch to detect when a door or window had been opened. You could say it's no longer a door bell but more of a door or window alarm.
Now this all works perfectly except for one major flaw. Once the reed switch has triggered the door bell circuit it only runs for one cycle. What I actually want is for the door bell to continue to chime for as long as the door or window remains open.
I have very limited electronics knowledge except for the very basics so I'm hoping someone with more experience might be able to steer me in the right direction. I've posted an image of the door bell circuit board (along with what the actual set up looks like) in the hope that someone might know how I can get around the one cycle limit that it currently sets.
I have spent time probing the circuit board with a wire trying to see if I could get around the normal switching cycle. Unfortunately the best I could do was to trigger the switching circuit for the standard one cycle. Maybe I could remove one of the existing resistors and replace with some other value. That's just one of my wild guesses. I thought I'd come here first before I toasted the current circuit board with too much experimenting.
Anyway, I hope the above makes sense and I look forward to doing a bit more tinkering once I have some feedback.
Now this all works perfectly except for one major flaw. Once the reed switch has triggered the door bell circuit it only runs for one cycle. What I actually want is for the door bell to continue to chime for as long as the door or window remains open.
I have very limited electronics knowledge except for the very basics so I'm hoping someone with more experience might be able to steer me in the right direction. I've posted an image of the door bell circuit board (along with what the actual set up looks like) in the hope that someone might know how I can get around the one cycle limit that it currently sets.
I have spent time probing the circuit board with a wire trying to see if I could get around the normal switching cycle. Unfortunately the best I could do was to trigger the switching circuit for the standard one cycle. Maybe I could remove one of the existing resistors and replace with some other value. That's just one of my wild guesses. I thought I'd come here first before I toasted the current circuit board with too much experimenting.
Anyway, I hope the above makes sense and I look forward to doing a bit more tinkering once I have some feedback.