Yes. Anyone can create an instructable and share it. Hack-a-day would be another one worth submitting to.
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Super, thanks for the information.
Are you planning to do it yourself? Great! 
Where do you outsource the PCB production?
I’we just made a video about how my Smart Doorbell works 
Check it out!
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If you could include an LED to improve night time shots, I would buy you immediately one of these right away! 
Great idea for upgrade in the second version
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And support for AA Ni-MH or Lithium batteries.
I had a plan to use batteries There is even space for a battery box on the PCB.
But it turned out that WIFI, Relay, and a quite delay when waking from Deep Sleep, successfully dissuaded me from this idea;)
I’m aware that could be different levels of deepsleep.
Maybe using some L-ion batteries, with higher capacity output may hold longer the ESP32. I have one Xiaomi doorbel and I forgot the last time I recharged the 3 Ni-MH batteries inside of it. Still going.
It uses 6 AA batteries. they say it lasts up to 6 months, it’s true?
How long is the delay?
It lasts more than 6 months, for my use case.
The delay is acceptable, since it’s connected to the mainland Chinese cloud, not locally controlled (unfortunately).