Hey there.
I've just got a weird idea.
The way I understand a wireless doorbell it works by;
a) A circuit which sends a radiosignal on a given frequency by the press of a button.
b) Another circuit which receives the radiosignal on the frequency, and triggers a speaker with the sound of a bell.
Now what I'm thinking is .. If all the sender does is to send a signal, and dont send a special code or anything, it must be possible to design a circuit which send signals on all the frequencies used by standard doorbells, and that way making every single doorbell in the neighbourhood ring for a little fun?
Any ideas on this? I've just had a look inside my own doorbell to find a sender called "SMH433F8", but can't find any datasheets about it. What might this be?
If someone knows the exacty ranges used by doorbells, i would be happy to know about those also.
I've just got a weird idea.
The way I understand a wireless doorbell it works by;
a) A circuit which sends a radiosignal on a given frequency by the press of a button.
b) Another circuit which receives the radiosignal on the frequency, and triggers a speaker with the sound of a bell.
Now what I'm thinking is .. If all the sender does is to send a signal, and dont send a special code or anything, it must be possible to design a circuit which send signals on all the frequencies used by standard doorbells, and that way making every single doorbell in the neighbourhood ring for a little fun?
Any ideas on this? I've just had a look inside my own doorbell to find a sender called "SMH433F8", but can't find any datasheets about it. What might this be?
If someone knows the exacty ranges used by doorbells, i would be happy to know about those also.