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Why not create a simple smart home automation to announce when your fridge door has left open ?
If there was a Rand for every time I have asked who left the fridge open I would be a person with a lot more smart home accessories!
I am sure this happens in every household and to be honest this was more in an effort to draw attention to the fridge door being open, as on so many occasions the family grabs a bottle of water or their lunch for the day on the way out to school or work and only noticed when everyone arrives back home.
For this DIY project I figured adding a camera to the mix would add some entertainment and validity to my suspicion of who is commonly at fault, but after a few weeks of seeing it in action we were quite surprised at the results...
You can turn your fridge into another one of those smart home devices by making use of the following hardware.
The configuration is quite straight forward once you have your Home Assistant and Zigbee Bridge/dongle integration in place. Simply pair the Aqara door sensor with ZHA followed by mounting it to the fridge door which would detect when opened.
The Ezviz camera was a spare which I integrated with Home Assistant and then mounted in such a way to get a clear picture of the said perpetrator in action(This took some trial and error).
Once the hardware was in place it was a case of creating an automation for the camera which would first take a snapshot when the fridge door is opened and then if it is left open for 5 minutes trigger a separate automation that announces that the fridge has been left open on our Google Home speakers followed by a push notification to my wife and I Home Assistant smart home app with the alert and snapshot that was taken.
alias: Kitchen Fridge Snapshot
alias: Fridge Door Open
It turned out that my wife was as guilty of leaving the fridge open as my youngest daughter...