Hi im looking at creating a sound dection module. I live in a flat and recenly installed a video door bell, however some people still use the main buzzer when at my front door. This isnt a problem when im home however if im out i obvisuly cant hear it. I would like to make some sort of sound sensor to detect when my buzzer goes off and then get a notification to my phone or home assistnt. I have no idea where to start or even if this is possable. Any help would be great.
it might be more robust if you can get the signal from the buzzer itself rather than designing a sound sensor which could get triggered by something else.
(I moved your topic to the Project Guidance category as it seemed more appropriate)
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Why not let an Arduino read the button, sound the buzzer and send the wireless message?
Unfortuinal im in rented and cant modify the achuly unit it any way witch is i need something to lissen out for it.
It is possible, what is your electronics experience? Can you post a picture of the buzzer? Also can you post another picture with the cover off? Do you have a multimeter, if so measure the voltage when the buzzer is active.
Consider your options, from "completed" toward first ideas...
- It will need to be held in place, in an enclosure and have power.
- Many ways to sense the presence of a person: PIR (heat signature), proximity, doppler, pressure (weight), sound (microphone), movement (if a floor mat is bumped).
Sorry i cant take the cover off.
I microphone would be the best option to lissen out for when it is pressed. Can I train the odino to listen out for a pacific sound? So it only notifiys me when the buzzer goes off and dosnt notifiy m3 for example every time i walk past the door
With Arduino you can use a microphone and test the surroundings with and without the doorbell active. Use the serial monitor to determine proper threshold for when doorbell sound is active. Set that value in your code to send message.
Should the word be Detect and NOT Decrect in the Title of this thread?
Thats great thank you for your advice. Ill get on aliexpress and hopfully have a working prototype in a few weeks. Thank you
Yes sorry my bad
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Like the surf crashing on a rocky shoreline? 
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A piezo placed on the cover of the door bell is likely going to detect the buzz
Can you simply remove the old doorbell button?