Retro-fitting a smoke detector

Interesting build.  They author basically is adding bluetooth support to the smoke detector, the trigger is the pull on the battery when the alarm goes off.  Me…I would use an ESP2866 instead (just as cheap and wifi) and TI….well I have used TI chips in the past and they are robust and lowpower and cheap…but tools for them lead alot to be desired.

Retrofitting Smoke Alarms With Bluetooth

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